A NULL pointer dereference issue was found in KVM when releasing a vCPU with dirty ring support enabled. This flaw allows an unprivileged local attacker on the host to issue specific ioctl calls, causing a kernel oops condition that results in a denial of service.

The version of kernel installed on the remote host is prior to 5.15.43-20.103. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.15-2023-023 advisory.

    2024-03-13: CVE-2022-48619 was added to this advisory.

    2023-10-12: CVE-2021-3923 was added to this advisory.

    2023-08-31: CVE-2023-4459 was added to this advisory.

    2023-08-31: CVE-2023-1637 was added to this advisory.

    2023-08-31: CVE-2023-4387 was added to this advisory.

    An issue was discovered in fs/io_uring.c in the Linux kernel through 5.11.8. It allows attackers to cause     a denial of service (deadlock) because exit may be waiting to park a SQPOLL thread, but concurrently that     SQPOLL thread is waiting for a signal to start, aka CID-3ebba796fa25. (CVE-2021-28951)

    A flaw was found in the Linux kernel's implementation of RDMA over infiniband. An attacker with a     privileged local account can leak kernel stack information when issuing commands to the     /dev/infiniband/rdma_cm device node. While this access is unlikely to leak sensitive user information, it     can be further used to defeat existing kernel protection mechanisms. (CVE-2021-3923)

    A flaw was found in unrestricted eBPF usage by the BPF_BTF_LOAD, leading to a possible out-of-bounds     memory write in the Linux kernel's BPF subsystem due to the way a user loads BTF. This flaw allows a local     user to crash or escalate their privileges on the system. (CVE-2022-0500)

    A flaw was found in the Linux kernel in linux/net/netfilter/nf_tables_api.c of the netfilter subsystem.
    This flaw allows a local user to cause an out-of-bounds write issue. (CVE-2022-1015)

    A flaw was found in the Linux kernel in net/netfilter/nf_tables_core.c:nft_do_chain, which can cause a     use-after-free. This issue needs to handle return with proper preconditions, as it can lead to a kernel     information leak problem caused by a local, unprivileged attacker. (CVE-2022-1016)

    When the KVM updates the guest's page table entry, it will first use get_user_pages_fast() to pin the     page, and when it fails (e.g. the vma->flags has VM_IO or VM_PFNMAP), it will get corresponding VMA where     the page lies in through find_vma_intersection(), calculate the physical address, and map the page to the     kernel virtual address through memremap(), and finally, write the update.The problem is that when we get     the vma through find_vma_intersection(), only VM_PFNMAP is checked, not both VM_IO and VM_PFNMAP. In the     reproducer below, after the KVM_SET_USER_MEMORY_REGION is completed, we replace the guest's memory mapping     with the kernel-user shared region of io_uring and then perform the KVM_TRANSLATE operation, which finally     triggers the page table entry update. Now, memremap() will return page_offset_base (direct mapping of all     physical memory) + vaddr (the linear address of KVM_TRANSLATE) + vm_pgoff (the offset when io_uring     performs mmap(2)), and use the return value as the base address for CMPXCHG (write 0x21 in this case).
    Since both vaddr and vm_pgoff are controllable by the user-mode process, writing may exceed the previously     mapped guest memory space and trigger exceptions such as UAF. The vulnerability shares similarities with     CVE-2021-22543. (CVE-2022-1158)

    A NULL pointer dereference issue was found in KVM when releasing a vCPU with dirty ring support enabled.
    This flaw allows an unprivileged local attacker on the host to issue specific ioctl calls, causing a     kernel oops condition that results in a denial of service. (CVE-2022-1263)

    A vulnerability was found in the pfkey_register function in net/key/af_key.c in the Linux kernel. This     flaw allows a local, unprivileged user to gain access to kernel memory, leading to a system crash or a     leak of internal kernel information. (CVE-2022-1353)

    perf: Fix sys_perf_event_open() race against self (CVE-2022-1729)

    A flaw was found in the Linux kernel's adjust_ptr_min_max_vals in the kernel/bpf/verifier.c function. In     this flaw, a missing sanity check for *_OR_NULL pointer types that perform pointer arithmetic may cause a     kernel information leak issue. (CVE-2022-23222)

    An integer coercion error was found in the openvswitch kernel module. Given a sufficiently large number of     actions, while copying and reserving memory for a new action of a new flow, the reserve_sfa_size()     function does not return -EMSGSIZE as expected, potentially leading to an out-of-bounds write access. This     flaw allows a local user to crash or potentially escalate their privileges on the system. (CVE-2022-2639)

    The SUNRPC subsystem in the Linux kernel through 5.17.2 can call xs_xprt_free before ensuring that sockets     are in the intended state. (CVE-2022-28893)

    Improper Update of Reference Count vulnerability in net/sched of Linux Kernel allows local attacker to     cause privilege escalation to root. This issue affects: Linux Kernel versions prior to 5.18; version 4.14     and later versions. (CVE-2022-29581)

    A use-after-free flaw was found in the Linux kernel's io_uring interface subsystem in the way a user     triggers a race condition between timeout flush and removal. This flaw allows a local user to crash or     escalate their privileges on the system. (CVE-2022-29582)

    The Linux kernel before 5.17.2 mishandles seccomp permissions. The PTRACE_SEIZE code path allows attackers     to bypass intended restrictions on setting the PT_SUSPEND_SECCOMP flag. (CVE-2022-30594)

    An issue was discovered in drivers/input/input.c in the Linux kernel before 5.17.10. An attacker can cause     a denial of service (panic) because input_set_capability mishandles the situation in which an event code     falls outside of a bitmap. (CVE-2022-48619)

    A flaw that boot CPU could be vulnerable for the speculative execution behavior kind of attacks in the     Linux kernel X86 CPU Power management options functionality was found in the way user resuming CPU from     suspend-to-RAM. A local user could use this flaw to potentially get unauthorized access to some memory of     the CPU similar to the speculative execution behavior kind of attacks. (CVE-2023-1637)

    A use-after-free flaw was found in vhost_net_set_backend in drivers/vhost/net.c in virtio network     subcomponent in the Linux kernel due to a double fget. This flaw could allow a local attacker to crash the     system, and could even lead to a kernel information leak problem. (CVE-2023-1838)

    Improper restriction of operations within the bounds of a memory buffer in some Intel(R) i915 Graphics     drivers for linux before kernel version 6.2.10 may allow an authenticated user to potentially enable     escalation of privilege via local access. (CVE-2023-28410)

    A use-after-free flaw was found in vmxnet3_rq_alloc_rx_buf in drivers/net/vmxnet3/vmxnet3_drv.c in     VMware's vmxnet3 ethernet NIC driver in the Linux Kernel. This issue could allow a local attacker to crash     the system due to a double-free while cleaning up vmxnet3_rq_cleanup_all, which could also lead to a     kernel information leak problem. (CVE-2023-4387)

    A NULL pointer dereference flaw was found in vmxnet3_rq_cleanup in drivers/net/vmxnet3/vmxnet3_drv.c in     the networking sub-component in vmxnet3 in the Linux Kernel. This issue may allow a local attacker with     normal user privilege to cause a denial of service due to a missing sanity check during cleanup.
    (CVE-2023-4459)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of kernel installed on the remote CBL Mariner 2.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2022-1263 advisory.

  - A NULL pointer dereference issue was found in KVM when releasing a vCPU with dirty ring support enabled.
    This flaw allows an unprivileged local attacker on the host to issue specific ioctl calls, causing a     kernel oops condition that results in a denial of service. (CVE-2022-1263)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2022:7683 advisory.

    The kernel packages contain the Linux kernel, the core of any Linux operating system.

    Security Fix(es):

    * off-path attacker may inject data or terminate victim's TCP session (CVE-2020-36516)

    * race condition in VT_RESIZEX ioctl when vc_cons[i].d is already NULL leading to NULL pointer dereference     (CVE-2020-36558)

    * use-after-free vulnerability in function sco_sock_sendmsg() (CVE-2021-3640)

    * memory leak for large arguments in video_usercopy function in drivers/media/v4l2-core/v4l2-ioctl.c     (CVE-2021-30002)

    * smb2_ioctl_query_info NULL Pointer Dereference (CVE-2022-0168)

    * NULL pointer dereference in udf_expand_file_adinicbdue() during writeback (CVE-2022-0617)

    * swiotlb information leak with DMA_FROM_DEVICE (CVE-2022-0854)

    * uninitialized registers on stack in nft_do_chain can cause kernel pointer leakage to UM (CVE-2022-1016)

    * race condition in snd_pcm_hw_free leading to use-after-free (CVE-2022-1048)

    * use-after-free in tc_new_tfilter() in net/sched/cls_api.c (CVE-2022-1055)

    * use-after-free and memory errors in ext4 when mounting and operating on a corrupted image     (CVE-2022-1184)

    * NULL pointer dereference in x86_emulate_insn may lead to DoS (CVE-2022-1852)

    * buffer overflow in nft_set_desc_concat_parse() (CVE-2022-2078)

    * nf_tables cross-table potential use-after-free may lead to local privilege escalation (CVE-2022-2586)

    * openvswitch: integer underflow leads to out-of-bounds write in reserve_sfa_size() (CVE-2022-2639)

    * use-after-free when psi trigger is destroyed while being polled (CVE-2022-2938)

    * net/packet: slab-out-of-bounds access in packet_recvmsg() (CVE-2022-20368)

    * possible to use the debugger to write zero into a location of choice (CVE-2022-21499)

    * Spectre-BHB (CVE-2022-23960)

    * Post-barrier Return Stack Buffer Predictions (CVE-2022-26373)

    * memory leak in drivers/hid/hid-elo.c (CVE-2022-27950)

    * double free in ems_usb_start_xmit in drivers/net/can/usb/ems_usb.c (CVE-2022-28390)

    * use after free in SUNRPC subsystem (CVE-2022-28893)

    * use-after-free due to improper update of reference count in net/sched/cls_u32.c (CVE-2022-29581)

    * DoS in nfqnl_mangle in net/netfilter/nfnetlink_queue.c (CVE-2022-36946)

    * nfs_atomic_open() returns uninitialized data instead of ENOTDIR (CVE-2022-24448)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.7 Release Notes     linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2022:7444 advisory.

    The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with     extremely high determinism requirements.

    Security Fix(es):

    * off-path attacker may inject data or terminate victim's TCP session (CVE-2020-36516)

    * Race condition in VT_RESIZEX ioctl when vc_cons[i].d is already NULL leading to NULL pointer dereference     (CVE-2020-36558)

    * use-after-free vulnerability in function sco_sock_sendmsg() (CVE-2021-3640)

    * Memory leak for large arguments in video_usercopy function in drivers/media/v4l2-core/v4l2-ioctl.c     (CVE-2021-30002)

    * smb2_ioctl_query_info NULL Pointer Dereference (CVE-2022-0168)

    * NULL pointer dereference in udf_expand_file_adinicbdue() during writeback (CVE-2022-0617)

    * swiotlb information leak with DMA_FROM_DEVICE (CVE-2022-0854)

    * Uninitialized registers on stack in nft_do_chain can cause kernel pointer leakage to UM (CVE-2022-1016)

    * Race condition in snd_pcm_hw_free leading to use-after-free (CVE-2022-1048)

    * use-after-free in tc_new_tfilter() in net/sched/cls_api.c (CVE-2022-1055)

    * use-after-free and memory errors in ext4 when mounting and operating on a corrupted image     (CVE-2022-1184)

    * NULL pointer dereference in x86_emulate_insn may lead to DoS (CVE-2022-1852)

    * buffer overflow in nft_set_desc_concat_parse() (CVE-2022-2078)

    * nf_tables cross-table potential use-after-free may lead to local privilege escalation (CVE-2022-2586)

    * openvswitch: integer underflow leads to out-of-bounds write in reserve_sfa_size() (CVE-2022-2639)

    * use-after-free when psi trigger is destroyed while being polled (CVE-2022-2938)

    * net/packet: slab-out-of-bounds access in packet_recvmsg() (CVE-2022-20368)

    * possible to use the debugger to write zero into a location of choice (CVE-2022-21499)

    * Post-barrier Return Stack Buffer Predictions (CVE-2022-26373)

    * Memory leak in drivers/hid/hid-elo.c (CVE-2022-27950)

    * Double free in ems_usb_start_xmit in drivers/net/can/usb/ems_usb.c (CVE-2022-28390)

    * Use after free in SUNRPC subsystem (CVE-2022-28893)

    * use-after-free due to improper update of reference count in net/sched/cls_u32.c (CVE-2022-29581)

    * DoS in nfqnl_mangle in net/netfilter/nfnetlink_queue.c (CVE-2022-36946)

    * nfs_atomic_open() returns uninitialized data instead of ENOTDIR (CVE-2022-24448)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.7 Release Notes     linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2022-2022-185 advisory.

    A flaw was found in the Linux kernel. The existing KVM SEV API has a vulnerability that allows a non-root     (host) user-level application to crash the host kernel by creating a confidential guest VM instance in AMD     CPU that supports Secure Encrypted Virtualization (SEV). (CVE-2022-0171)

    A use-after-free flaw was found in fs/ext4/namei.c:dx_insert_block() in the Linux kernel's filesystem sub-     component. This flaw allows a local attacker with a user privilege to cause a denial of service.
    (CVE-2022-1184)

    An out-of-bounds read flaw was found in the Linux kernel's TeleTYpe subsystem. The issue occurs in how a     user triggers a race condition using ioctls TIOCSPTLCK and TIOCGPTPEER and TIOCSTI and TCXONC with leakage     of memory in the flush_to_ldisc function. This flaw allows a local user to crash the system or read     unauthorized random data from memory. (CVE-2022-1462)

    A use-after-free flaw was found in the Linux kernel's Atheros wireless adapter driver in the way a user     forces the ath9k_htc_wait_for_target function to fail with some input messages. This flaw allows a local     user to crash or potentially escalate their privileges on the system. (CVE-2022-1679)

    A flaw was found in KVM. With shadow paging enabled if INVPCID is executed with CR0.PG=0, the invlpg     callback is not set, and the result is a NULL pointer dereference. This flaw allows a guest user to cause     a kernel oops condition on the host, resulting in a denial of service. (CVE-2022-1789)

    A NULL pointer dereference flaw was found in the Linux kernel's KVM module, which can lead to a denial of     service in the x86_emulate_insn in arch/x86/kvm/emulate.c. This flaw occurs while executing an illegal     instruction in guest in the Intel CPU. (CVE-2022-1852)

    A use-after-free vulnerability was found in the Linux kernel's Netfilter subsystem in     net/netfilter/nf_tables_api.c. This flaw allows a local attacker with user access to cause a privilege     escalation issue. (CVE-2022-1966)

    No description is available for this CVE. (CVE-2022-1972)

    A use-after-free flaw was found in the Linux kernel in log_replay in fs/ntfs3/fslog.c in the NTFS journal.
    This flaw allows a local attacker to crash the system and leads to a kernel information leak problem.
    (CVE-2022-1973)

    A vulnerability was found in the Linux kernel's nft_set_desc_concat_parse() function .This flaw allows an     attacker to trigger a buffer overflow via nft_set_desc_concat_parse() , causing a denial of service and     possibly to run code. (CVE-2022-2078)

    A flaw was found in hw. Incomplete cleanup of multi-core shared buffers for some Intel(r) Processors may     allow an authenticated user to enable information disclosure via local access. (CVE-2022-21123)

    A flaw was found in hw. Incomplete cleanup of microarchitectural fill buffers on some Intel(r) Processors     may allow an authenticated user to enable information disclosure via local access. (CVE-2022-21125)

    A flaw was found in hw. Incomplete cleanup in specific special register write operations for some     Intel Processors may allow an authenticated user to enable information disclosure via local access.
    (CVE-2022-21166)

    A bug in the IMA subsystem was discovered which would incorrectly allow kexec to be used when kernel     lockdown was enabled (CVE-2022-21505)

    A flaw was found in hw. Mis-trained branch predictions for return instructions may allow arbitrary     speculative code execution under certain microarchitecture-dependent conditions. (CVE-2022-23816)

    A flaw was found in hw. Aliases in the branch predictor may cause some AMD processors to predict the wrong     branch type, potentially leading to information disclosure. (CVE-2022-23825)

    A use-after-free flaw was found in the Linux kernel's POSIX CPU timers functionality in the way a user     creates and then deletes the timer in the non-leader thread of the program. This flaw allows a local user     to crash or potentially escalate their privileges on the system. (CVE-2022-2585)

    A use-after-free flaw was found in nf_tables cross-table in the net/netfilter/nf_tables_api.c function in     the Linux kernel. This flaw allows a local, privileged attacker to cause a use-after-free problem at the     time of table deletion, possibly leading to local privilege escalation. (CVE-2022-2586)

    A use-after-free flaw was found in route4_change in the net/sched/cls_route.c filter implementation in the     Linux kernel. This flaw allows a local user to crash the system and possibly lead to a local privilege     escalation problem. (CVE-2022-2588)

    Linux disk/nic frontends data leaks T[his CNA information record relates to multiple CVEs; the text     explains which aspects/vulnerabilities correspond to which CVE.] Linux Block and Network PV device     frontends don't zero memory regions before sharing them with the backend (CVE-2022-26365, CVE-2022-33740).
    Additionally the granularity of the grant table doesn't allow sharing less than a 4K page, leading to     unrelated data residing in the same 4K page as data shared with a backend being accessible by such backend     (CVE-2022-33741, CVE-2022-33742). (CVE-2022-26365)

    A flaw was found in hw. In certain processors with Intel's Enhanced Indirect Branch Restricted Speculation     (eIBRS) capabilities, soon after VM exit or IBPB command event, the linear address following the most     recent near CALL instruction prior to a VM exit may be used as the Return Stack Buffer (RSB) prediction.
    (CVE-2022-26373)

    A firewall flaw that can bypass the Linux kernel's Netfilter functionality was found in how a user handles     unencrypted IRC with nf_conntrack_irc configured. This flaw allows a remote user to gain unauthorized     access to the system. (CVE-2022-2663)

    A flaw was found in hw. The unprotected alternative channel of return branch target prediction in some     Intel(R) Processors may allow an authorized user to enable information disclosure via local access.
    (CVE-2022-28693)

    An out-of-bounds memory read flaw was found in the Linux kernel's BPF subsystem in how a user calls the     bpf_tail_call function with a key larger than the max_entries of the map. This flaw allows a local user to     gain unauthorized access to data. (CVE-2022-2905)

    A flaw was found in hw. Mis-trained branch predictions for return instructions may allow arbitrary     speculative code execution under certain microarchitecture-dependent conditions. (CVE-2022-29900)

    A flaw was found in hw. Non-transparent sharing of branch predictor targets between contexts in some     Intel(R) processors may potentially allow an authorized user to enable information disclosure via local     access. (CVE-2022-29901)

    A race condition was found in the Linux kernel's IP framework for transforming packets (XFRM subsystem)     when multiple calls to xfrm_probe_algs occurred simultaneously. This flaw could allow a local attacker to     potentially trigger an out-of-bounds write or leak kernel heap memory by performing an out-of-bounds read     and copying it into a socket. (CVE-2022-3028)

    Found Linux Kernel flaw in the i740 driver. The Userspace program could pass any values to the driver     through ioctl() interface. The driver doesn't check the value of 'pixclock', so it may cause a divide by     zero error. (CVE-2022-3061)

    A use-after-free flaw was found in io_uring in the Linux kernel. This flaw allows a local user to trigger     the issue if a signalfd or binder fd is polled with the io_uring poll due to a lack of io_uring POLLFREE     handling. (CVE-2022-3176)

    net/netfilter/nf_tables_api.c in the Linux kernel through 5.18.1 allows a local user (able to create     user/net namespaces) to escalate privileges to root because an incorrect NFT_STATEFUL_EXPR check leads to     a use-after-free. (CVE-2022-32250)

    An issue was discovered in the Linux kernel through 5.18.3 on powerpc 32-bit platforms. There is a buffer     overflow in ptrace PEEKUSER and POKEUSER (aka PEEKUSR and POKEUSR) when accessing floating point     registers. (CVE-2022-32981)

    A race condition flaw was found in the Linux kernel sound subsystem due to improper locking. It could lead     to a NULL pointer dereference while handling the SNDCTL_DSP_SYNC ioctl. A privileged local user (root or     member of the audio group) could use this flaw to crash the system, resulting in a denial of service     condition. (CVE-2022-3303)

    Linux disk/nic frontends data leaks T[his CNA information record relates to multiple CVEs; the text     explains which aspects/vulnerabilities correspond to which CVE.] Linux Block and Network PV device     frontends don't zero memory regions before sharing them with the backend (CVE-2022-26365, CVE-2022-33740).
    Additionally the granularity of the grant table doesn't allow sharing less than a 4K page, leading to     unrelated data residing in the same 4K page as data shared with a backend being accessible by such backend     (CVE-2022-33741, CVE-2022-33742). (CVE-2022-33740)

    Linux disk/nic frontends data leaks T[his CNA information record relates to multiple CVEs; the text     explains which aspects/vulnerabilities correspond to which CVE.] Linux Block and Network PV device     frontends don't zero memory regions before sharing them with the backend (CVE-2022-26365, CVE-2022-33740).
    Additionally the granularity of the grant table doesn't allow sharing less than a 4K page, leading to     unrelated data residing in the same 4K page as data shared with a backend being accessible by such backend     (CVE-2022-33741, CVE-2022-33742). (CVE-2022-33741)

    Linux disk/nic frontends data leaks T[his CNA information record relates to multiple CVEs; the text     explains which aspects/vulnerabilities correspond to which CVE.] Linux Block and Network PV device     frontends don't zero memory regions before sharing them with the backend (CVE-2022-26365, CVE-2022-33740).
    Additionally the granularity of the grant table doesn't allow sharing less than a 4K page, leading to     unrelated data residing in the same 4K page as data shared with a backend being accessible by such backend     (CVE-2022-33741, CVE-2022-33742). (CVE-2022-33742)

    network backend may cause Linux netfront to use freed SKBs While adding logic to support XDP (eXpress Data     Path), a code label was moved in a way allowing for SKBs having references (pointers) retained for further     processing to nevertheless be freed. (CVE-2022-33743)

    rpmsg_virtio_add_ctrl_dev in drivers/rpmsg/virtio_rpmsg_bus.c in the Linux kernel before 5.18.4 has a     double free. (CVE-2022-34494)

    rpmsg_probe in drivers/rpmsg/virtio_rpmsg_bus.c in the Linux kernel before 5.18.4 has a double free.
    (CVE-2022-34495)

    A heap buffer overflow flaw was found in the Linux kernel's Netfilter subsystem in the way a user provides     incorrect input of the NFT_DATA_VERDICT type. This flaw allows a local user to crash or potentially     escalate their privileges on the system. (CVE-2022-34918)

    A memory access flaw was found in the Linux kernel's XEN hypervisor for the virtual machine. This flaw     allows a local user to crash the system or potentially escalate their privileges on the system.
    (CVE-2022-36123)

    An issue was discovered in the Linux kernel through 5.18.14. xfrm_expand_policies in     net/xfrm/xfrm_policy.c can cause a refcount to be dropped twice. (CVE-2022-36879)

    A memory corruption flaw was found in the Linux kernel's Netfilter subsystem in the way a local user uses     the libnetfilter_queue when analyzing a corrupted network packet. This flaw allows a local user to crash     the system or a remote user to crash the system when the libnetfilter_queue is used by a local user.
    (CVE-2022-36946)

    A flaw was found in the x86 KVM subsystem in kvm_steal_time_set_preempted in arch/x86/kvm/x86.c in the     Linux kernel. Unprivileged guest users can compromise the guest kernel because TLB flush operations are     mishandled in certain KVM_VCPU_PREEMPTED situations. (CVE-2022-39189)

    An issue was discovered in net/netfilter/nf_tables_api.c in the Linux kernel before 5.19.6. A denial of     service can occur upon binding to an already bound chain. (CVE-2022-39190)

    An issue was discovered in the Linux kernel before 5.19. In pxa3xx_gcu_write in     drivers/video/fbdev/pxa3xx-gcu.c, the count parameter has a type conflict of size_t versus int, causing an     integer overflow and bypassing the size check. After that, because it is used as the third argument to     copy_from_user(), a heap overflow may occur. (CVE-2022-39842)

    A race condition in the Linux kernel's EFI capsule loader driver was found in the way it handled write and     flush operations on the device node of the EFI capsule. A local user could potentially use this flaw to     crash the system. (CVE-2022-40307)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2022:3844-1 advisory.

  - A NULL pointer dereference issue was found in KVM when releasing a vCPU with dirty ring support enabled.
    This flaw allows an unprivileged local attacker on the host to issue specific ioctl calls, causing a     kernel oops condition that results in a denial of service. (CVE-2022-1263)

  - kernel: nf_tables cross-table potential use-after-free may lead to local privilege escalation     (CVE-2022-2586)

  - A NULL pointer dereference flaw in diFree in fs/jfs/inode.c in Journaled File System (JFS)in the Linux     kernel. This could allow a local attacker to crash the system or leak kernel internal information.
    (CVE-2022-3202)

  - The Linux kernel before 5.17.9 allows TCP servers to identify clients by observing what source ports are     used. This occurs because of use of Algorithm 4 (Double-Hash Port Selection Algorithm) of RFC 6056.
    (CVE-2022-32296)

  - A flaw use after free in the Linux kernel video4linux driver was found in the way user triggers     em28xx_usb_probe() for the Empia 28xx based TV cards. A local user could use this flaw to crash the system     or potentially escalate their privileges on the system. (CVE-2022-3239)

  - A race condition flaw was found in the Linux kernel sound subsystem due to improper locking. It could lead     to a NULL pointer dereference while handling the SNDCTL_DSP_SYNC ioctl. A privileged local user (root or     member of the audio group) could use this flaw to crash the system, resulting in a denial of service     condition (CVE-2022-3303)

  - An issue was discovered the x86 KVM subsystem in the Linux kernel before 5.18.17. Unprivileged guest users     can compromise the guest kernel because TLB flush operations are mishandled in certain KVM_VCPU_PREEMPTED     situations. (CVE-2022-39189)

  - In drivers/media/dvb-core/dmxdev.c in the Linux kernel through 5.19.10, there is a use-after-free caused     by refcount races, affecting dvb_demux_open and dvb_dmxdev_release. (CVE-2022-41218)

  - An issue was discovered in the Linux kernel before 5.19.16. Attackers able to inject WLAN frames could     cause a buffer overflow in the ieee80211_bss_info_update function in net/mac80211/scan.c. (CVE-2022-41674)

  - drivers/char/pcmcia/synclink_cs.c in the Linux kernel through 5.19.12 has a race condition and resultant     use-after-free if a physically proximate attacker removes a PCMCIA device while calling ioctl, aka a race     condition between mgslpc_ioctl and mgslpc_detach. (CVE-2022-41848)

  - drivers/video/fbdev/smscufx.c in the Linux kernel through 5.19.12 has a race condition and resultant use-     after-free if a physically proximate attacker removes a USB device while calling open(), aka a race     condition between ufx_ops_open and ufx_usb_disconnect. (CVE-2022-41849)

  - A use-after-free in the mac80211 stack when parsing a multi-BSSID element in the Linux kernel 5.2 through     5.19.x before 5.19.16 could be used by attackers (able to inject WLAN frames) to crash the kernel and     potentially execute code. (CVE-2022-42719)

  - Various refcounting bugs in the multi-BSS handling in the mac80211 stack in the Linux kernel 5.1 through     5.19.x before 5.19.16 could be used by local attackers (able to inject WLAN frames) to trigger use-after-     free conditions to potentially execute code. (CVE-2022-42720)

  - A list management bug in BSS handling in the mac80211 stack in the Linux kernel 5.1 through 5.19.x before     5.19.16 could be used by local attackers (able to inject WLAN frames) to corrupt a linked list and, in     turn, potentially execute code. (CVE-2022-42721)

  - In the Linux kernel 5.8 through 5.19.x before 5.19.16, local attackers able to inject WLAN frames into the     mac80211 stack could cause a NULL pointer dereference denial-of-service attack against the beacon     protection of P2P devices. (CVE-2022-42722)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2022:3585-1 advisory.

  - A NULL pointer dereference issue was found in KVM when releasing a vCPU with dirty ring support enabled.
    This flaw allows an unprivileged local attacker on the host to issue specific ioctl calls, causing a     kernel oops condition that results in a denial of service. (CVE-2022-1263)

  - kernel: nf_tables cross-table potential use-after-free may lead to local privilege escalation     (CVE-2022-2586)

  - A NULL pointer dereference flaw in diFree in fs/jfs/inode.c in Journaled File System (JFS)in the Linux     kernel. This could allow a local attacker to crash the system or leak kernel internal information.
    (CVE-2022-3202)

  - A flaw use after free in the Linux kernel video4linux driver was found in the way user triggers     em28xx_usb_probe() for the Empia 28xx based TV cards. A local user could use this flaw to crash the system     or potentially escalate their privileges on the system. (CVE-2022-3239)

  - A race condition flaw was found in the Linux kernel sound subsystem due to improper locking. It could lead     to a NULL pointer dereference while handling the SNDCTL_DSP_SYNC ioctl. A privileged local user (root or     member of the audio group) could use this flaw to crash the system, resulting in a denial of service     condition (CVE-2022-3303)

  - An issue was discovered the x86 KVM subsystem in the Linux kernel before 5.18.17. Unprivileged guest users     can compromise the guest kernel because TLB flush operations are mishandled in certain KVM_VCPU_PREEMPTED     situations. (CVE-2022-39189)

  - In drivers/media/dvb-core/dmxdev.c in the Linux kernel through 5.19.10, there is a use-after-free caused     by refcount races, affecting dvb_demux_open and dvb_dmxdev_release. (CVE-2022-41218)

  - drivers/char/pcmcia/synclink_cs.c in the Linux kernel through 5.19.12 has a race condition and resultant     use-after-free if a physically proximate attacker removes a PCMCIA device while calling ioctl, aka a race     condition between mgslpc_ioctl and mgslpc_detach. (CVE-2022-41848)

  - drivers/video/fbdev/smscufx.c in the Linux kernel through 5.19.12 has a race condition and resultant use-     after-free if a physically proximate attacker removes a USB device while calling open(), aka a race     condition between ufx_ops_open and ufx_usb_disconnect. (CVE-2022-41849)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2022-2022-083 advisory.

    A flaw was found in unrestricted eBPF usage by the BPF_BTF_LOAD, leading to a possible out-of-bounds     memory write in the Linux kernel's BPF subsystem due to the way a user loads BTF. This flaw allows a local     user to crash or escalate their privileges on the system. (CVE-2022-0500)

    A flaw was found in the Linux kernel in linux/net/netfilter/nf_tables_api.c of the netfilter subsystem.
    This flaw allows a local user to cause an out-of-bounds write issue. (CVE-2022-1015)

    A flaw was found in the Linux kernel in net/netfilter/nf_tables_core.c:nft_do_chain, which can cause a     use-after-free. This issue needs to handle return with proper preconditions, as it can lead to a kernel     information leak problem caused by a local, unprivileged attacker. (CVE-2022-1016)

    When the KVM updates the guest's page table entry, it will first use get_user_pages_fast() to pin the     page, and when it fails (e.g. the vma->flags has VM_IO or VM_PFNMAP), it will get corresponding VMA where     the page lies in through find_vma_intersection(), calculate the physical address, and map the page to the     kernel virtual address through memremap(), and finally, write the update.The problem is that when we get     the vma through find_vma_intersection(), only VM_PFNMAP is checked, not both VM_IO and VM_PFNMAP. In the     reproducer below, after the KVM_SET_USER_MEMORY_REGION is completed, we replace the guest's memory mapping     with the kernel-user shared region of io_uring and then perform the KVM_TRANSLATE operation, which finally     triggers the page table entry update. Now, memremap() will return page_offset_base (direct mapping of all     physical memory) + vaddr (the linear address of KVM_TRANSLATE) + vm_pgoff (the offset when io_uring     performs mmap(2)), and use the return value as the base address for CMPXCHG (write 0x21 in this case).
    Since both vaddr and vm_pgoff are controllable by the user-mode process, writing may exceed the previously     mapped guest memory space and trigger exceptions such as UAF. The vulnerability shares similarities with     CVE-2021-22543. (CVE-2022-1158)

    A NULL pointer dereference issue was found in KVM when releasing a vCPU with dirty ring support enabled.
    This flaw allows an unprivileged local attacker on the host to issue specific ioctl calls, causing a     kernel oops condition that results in a denial of service. (CVE-2022-1263)

    A vulnerability was found in the pfkey_register function in net/key/af_key.c in the Linux kernel. This     flaw allows a local, unprivileged user to gain access to kernel memory, leading to a system crash or a     leak of internal kernel information. (CVE-2022-1353)

    perf: Fix sys_perf_event_open() race against self (CVE-2022-1729)

    A flaw was found in the Linux kernel's adjust_ptr_min_max_vals in the kernel/bpf/verifier.c function. In     this flaw, a missing sanity check for *_OR_NULL pointer types that perform pointer arithmetic may cause a     kernel information leak issue. (CVE-2022-23222)

    The SUNRPC subsystem in the Linux kernel through 5.17.2 can call xs_xprt_free before ensuring that sockets     are in the intended state. (CVE-2022-28893)

    Improper Update of Reference Count vulnerability in net/sched of Linux Kernel allows local attacker to     cause privilege escalation to root. This issue affects: Linux Kernel versions prior to 5.18; version 4.14     and later versions. (CVE-2022-29581)

    A use-after-free flaw was found in the Linux kernel's io_uring interface subsystem in the way a user     triggers a race condition between timeout flush and removal. This flaw allows a local user to crash or     escalate their privileges on the system. (CVE-2022-29582)

    The Linux kernel before 5.17.2 mishandles seccomp permissions. The PTRACE_SEIZE code path allows attackers     to bypass intended restrictions on setting the PT_SUSPEND_SECCOMP flag. (CVE-2022-30594)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2022-9534 advisory.

    - KVM: x86/speculation: Disable Fill buffer clear within guests (Pawan Gupta)  [Orabug: 34202258]     {CVE-2022-21123} {CVE-2022-21127} {CVE-2022-21125} {CVE-2022-21166}
    - x86/speculation/mmio: Reuse SRBDS mitigation for SBDS (Pawan Gupta)  [Orabug: 34202258]     {CVE-2022-21123} {CVE-2022-21127} {CVE-2022-21125} {CVE-2022-21166}
    - x86/speculation/srbds: Update SRBDS mitigation selection (Pawan Gupta)  [Orabug: 34202258]     {CVE-2022-21123} {CVE-2022-21127} {CVE-2022-21125} {CVE-2022-21166}
    - x86/speculation/mmio: Add sysfs reporting for Processor MMIO Stale Data (Pawan Gupta)  [Orabug:
    34202258]  {CVE-2022-21123} {CVE-2022-21127} {CVE-2022-21125} {CVE-2022-21166}
    - x86/speculation/mmio: Enable CPU Fill buffer clearing on idle (Pawan Gupta)  [Orabug: 34202258]     {CVE-2022-21123} {CVE-2022-21127} {CVE-2022-21125} {CVE-2022-21166}
    - x86/bugs: Group MDS, TAA & Processor MMIO Stale Data mitigations (Pawan Gupta)  [Orabug: 34202258]     {CVE-2022-21123} {CVE-2022-21127} {CVE-2022-21125} {CVE-2022-21166}
    - x86/speculation/mmio: Add mitigation for Processor MMIO Stale Data (Pawan Gupta)  [Orabug: 34202258]     {CVE-2022-21123} {CVE-2022-21127} {CVE-2022-21125} {CVE-2022-21166}
    - x86/speculation: Add a common function for MD_CLEAR mitigation update (Pawan Gupta)  [Orabug: 34202258]     {CVE-2022-21123} {CVE-2022-21127} {CVE-2022-21125} {CVE-2022-21166}
    - x86/speculation/mmio: Enumerate Processor MMIO Stale Data bug (Pawan Gupta)  [Orabug: 34202258]     {CVE-2022-21123} {CVE-2022-21127} {CVE-2022-21125} {CVE-2022-21166}
    - Documentation: Add documentation for Processor MMIO Stale Data (Pawan Gupta)  [Orabug: 34202258]     {CVE-2022-21123} {CVE-2022-21127} {CVE-2022-21125} {CVE-2022-21166}
    - lockdown: also lock down previous kgdb use (Daniel Thompson)  [Orabug: 34152698]  {CVE-2022-21499}
    - io_uring: fix race between timeout flush and removal (Jens Axboe)  [Orabug: 34115159]  {CVE-2022-29582}
    - KVM: x86: avoid calling x86 emulator without a decoded instruction (Sean Christopherson)  [Orabug:
    34205798]  {CVE-2022-1852} {CVE-2022-1852}
    - perf: Fix sys_perf_event_open() race against self (Peter Zijlstra)  [Orabug: 34172708]  {CVE-2022-1729}
    - af_key: add __GFP_ZERO flag for compose_sadb_supported in function pfkey_register (Haimin Zhang)     [Orabug: 34135342]  {CVE-2022-1353}
    - KVM: avoid NULL pointer dereference in kvm_dirty_ring_push (Paolo Bonzini)  [Orabug: 34048938]     {CVE-2022-1263}
    - can: ems_usb: ems_usb_start_xmit(): fix double dev_kfree_skb() in error path (Hangyu Hua)  [Orabug:
    34048326]  {CVE-2022-28390}
    - can: usb_8dev: usb_8dev_start_xmit(): fix double dev_kfree_skb() in error path (Hangyu Hua)  [Orabug:
    34048287]  {CVE-2022-28388}
    - ALSA: pcm: Fix races among concurrent prealloc proc writes (Takashi Iwai)  [Orabug: 34007904]     {CVE-2022-1048}
    - ALSA: pcm: Fix races among concurrent prepare and hw_params/hw_free calls (Takashi Iwai)  [Orabug:
    34007904]  {CVE-2022-1048}
    - ALSA: pcm: Fix races among concurrent read/write and buffer changes (Takashi Iwai)  [Orabug: 34007904]     {CVE-2022-1048}
    - ALSA: pcm: Fix races among concurrent hw_params and hw_free calls (Takashi Iwai)  [Orabug: 34007904]     {CVE-2022-1048}
    - KVM: x86/mmu: do compare-and-exchange of gPTE via the user address (Paolo Bonzini)  [Orabug: 34034593]     {CVE-2022-1158}
    - netfilter: nf_tables: validate registers coming from userspace. (Pablo Neira Ayuso)  [Orabug: 34012906]     {CVE-2022-1015}
    - netfilter: nf_tables: initialize registers in nft_do_chain() (Pablo Neira Ayuso)  [Orabug: 34012923]     {CVE-2022-1016}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2022-9533 advisory.

    - KVM: x86/speculation: Disable Fill buffer clear within guests (Pawan Gupta)  [Orabug: 34202258]     {CVE-2022-21123} {CVE-2022-21127} {CVE-2022-21125} {CVE-2022-21166}
    - x86/speculation/mmio: Reuse SRBDS mitigation for SBDS (Pawan Gupta)  [Orabug: 34202258]     {CVE-2022-21123} {CVE-2022-21127} {CVE-2022-21125} {CVE-2022-21166}
    - x86/speculation/srbds: Update SRBDS mitigation selection (Pawan Gupta)  [Orabug: 34202258]     {CVE-2022-21123} {CVE-2022-21127} {CVE-2022-21125} {CVE-2022-21166}
    - x86/speculation/mmio: Add sysfs reporting for Processor MMIO Stale Data (Pawan Gupta)  [Orabug:
    34202258]  {CVE-2022-21123} {CVE-2022-21127} {CVE-2022-21125} {CVE-2022-21166}
    - x86/speculation/mmio: Enable CPU Fill buffer clearing on idle (Pawan Gupta)  [Orabug: 34202258]     {CVE-2022-21123} {CVE-2022-21127} {CVE-2022-21125} {CVE-2022-21166}
    - x86/bugs: Group MDS, TAA & Processor MMIO Stale Data mitigations (Pawan Gupta)  [Orabug: 34202258]     {CVE-2022-21123} {CVE-2022-21127} {CVE-2022-21125} {CVE-2022-21166}
    - x86/speculation/mmio: Add mitigation for Processor MMIO Stale Data (Pawan Gupta)  [Orabug: 34202258]     {CVE-2022-21123} {CVE-2022-21127} {CVE-2022-21125} {CVE-2022-21166}
    - x86/speculation: Add a common function for MD_CLEAR mitigation update (Pawan Gupta)  [Orabug: 34202258]     {CVE-2022-21123} {CVE-2022-21127} {CVE-2022-21125} {CVE-2022-21166}
    - x86/speculation/mmio: Enumerate Processor MMIO Stale Data bug (Pawan Gupta)  [Orabug: 34202258]     {CVE-2022-21123} {CVE-2022-21127} {CVE-2022-21125} {CVE-2022-21166}
    - Documentation: Add documentation for Processor MMIO Stale Data (Pawan Gupta)  [Orabug: 34202258]     {CVE-2022-21123} {CVE-2022-21127} {CVE-2022-21125} {CVE-2022-21166}
    - lockdown: also lock down previous kgdb use (Daniel Thompson)  [Orabug: 34152698]  {CVE-2022-21499}
    - io_uring: fix race between timeout flush and removal (Jens Axboe)  [Orabug: 34115159]  {CVE-2022-29582}
    - KVM: x86: avoid calling x86 emulator without a decoded instruction (Sean Christopherson)  [Orabug:
    34205798]  {CVE-2022-1852} {CVE-2022-1852}
    - perf: Fix sys_perf_event_open() race against self (Peter Zijlstra)  [Orabug: 34172708]  {CVE-2022-1729}
    - af_key: add __GFP_ZERO flag for compose_sadb_supported in function pfkey_register (Haimin Zhang)     [Orabug: 34135342]  {CVE-2022-1353}
    - KVM: avoid NULL pointer dereference in kvm_dirty_ring_push (Paolo Bonzini)  [Orabug: 34048938]     {CVE-2022-1263}
    - can: ems_usb: ems_usb_start_xmit(): fix double dev_kfree_skb() in error path (Hangyu Hua)  [Orabug:
    34048326]  {CVE-2022-28390}
    - can: usb_8dev: usb_8dev_start_xmit(): fix double dev_kfree_skb() in error path (Hangyu Hua)  [Orabug:
    34048287]  {CVE-2022-28388}
    - ALSA: pcm: Fix races among concurrent prealloc proc writes (Takashi Iwai)  [Orabug: 34007904]     {CVE-2022-1048}
    - ALSA: pcm: Fix races among concurrent prepare and hw_params/hw_free calls (Takashi Iwai)  [Orabug:
    34007904]  {CVE-2022-1048}
    - ALSA: pcm: Fix races among concurrent read/write and buffer changes (Takashi Iwai)  [Orabug: 34007904]     {CVE-2022-1048}
    - ALSA: pcm: Fix races among concurrent hw_params and hw_free calls (Takashi Iwai)  [Orabug: 34007904]     {CVE-2022-1048}
    - KVM: x86/mmu: do compare-and-exchange of gPTE via the user address (Paolo Bonzini)  [Orabug: 34034593]     {CVE-2022-1158}
    - netfilter: nf_tables: validate registers coming from userspace. (Pablo Neira Ayuso)  [Orabug: 34012906]     {CVE-2022-1015}
    - netfilter: nf_tables: initialize registers in nft_do_chain() (Pablo Neira Ayuso)  [Orabug: 34012923]     {CVE-2022-1016}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of kernel installed on the remote host is prior to 5.15.43-20.123. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.15-2022-001 advisory.

    A flaw was found in unrestricted eBPF usage by the BPF_BTF_LOAD, leading to a possible out-of-bounds     memory write in the Linux kernel's BPF subsystem due to the way a user loads BTF. This flaw allows a local     user to crash or escalate their privileges on the system. (CVE-2022-0500)

    A flaw was found in the Linux kernel in linux/net/netfilter/nf_tables_api.c of the netfilter subsystem.
    This flaw allows a local user to cause an out-of-bounds write issue. (CVE-2022-1015)

    A flaw was found in the Linux kernel in net/netfilter/nf_tables_core.c:nft_do_chain, which can cause a     use-after-free. This issue needs to handle return with proper preconditions, as it can lead to a kernel     information leak problem caused by a local, unprivileged attacker. (CVE-2022-1016)

    When the KVM updates the guest's page table entry, it will first use get_user_pages_fast() to pin the     page, and when it fails (e.g. the vma->flags has VM_IO or VM_PFNMAP), it will get corresponding VMA where     the page lies in through find_vma_intersection(), calculate the physical address, and map the page to the     kernel virtual address through memremap(), and finally, write the update.The problem is that when we get     the vma through find_vma_intersection(), only VM_PFNMAP is checked, not both VM_IO and VM_PFNMAP. In the     reproducer below, after the KVM_SET_USER_MEMORY_REGION is completed, we replace the guest's memory mapping     with the kernel-user shared region of io_uring and then perform the KVM_TRANSLATE operation, which finally     triggers the page table entry update. Now, memremap() will return page_offset_base (direct mapping of all     physical memory) + vaddr (the linear address of KVM_TRANSLATE) + vm_pgoff (the offset when io_uring     performs mmap(2)), and use the return value as the base address for CMPXCHG (write 0x21 in this case).
    Since both vaddr and vm_pgoff are controllable by the user-mode process, writing may exceed the previously     mapped guest memory space and trigger exceptions such as UAF. The vulnerability shares similarities with     CVE-2021-22543. (CVE-2022-1158)

    A NULL pointer dereference issue was found in KVM when releasing a vCPU with dirty ring support enabled.
    This flaw allows an unprivileged local attacker on the host to issue specific ioctl calls, causing a     kernel oops condition that results in a denial of service. (CVE-2022-1263)

    A vulnerability was found in the pfkey_register function in net/key/af_key.c in the Linux kernel. This     flaw allows a local, unprivileged user to gain access to kernel memory, leading to a system crash or a     leak of internal kernel information. (CVE-2022-1353)

    perf: Fix sys_perf_event_open() race against self (CVE-2022-1729)

    A flaw was found in the Linux kernel's adjust_ptr_min_max_vals in the kernel/bpf/verifier.c function. In     this flaw, a missing sanity check for *_OR_NULL pointer types that perform pointer arithmetic may cause a     kernel information leak issue. (CVE-2022-23222)

    The SUNRPC subsystem in the Linux kernel through 5.17.2 can call xs_xprt_free before ensuring that sockets     are in the intended state. (CVE-2022-28893)

    Improper Update of Reference Count vulnerability in net/sched of Linux Kernel allows local attacker to     cause privilege escalation to root. This issue affects: Linux Kernel versions prior to 5.18; version 4.14     and later versions. (CVE-2022-29581)

    A use-after-free flaw was found in the Linux kernel's io_uring interface subsystem in the way a user     triggers a race condition between timeout flush and removal. This flaw allows a local user to crash or     escalate their privileges on the system. (CVE-2022-29582)

    The Linux kernel before 5.17.2 mishandles seccomp permissions. The PTRACE_SEIZE code path allows attackers     to bypass intended restrictions on setting the PT_SUSPEND_SECCOMP flag. (CVE-2022-30594)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5469-1 advisory.

    It was discovered that the Linux kernel did not properly restrict access to the kernel debugger when     booted in secure boot environments. A privileged attacker could use this to bypass UEFI Secure Boot     restrictions. (CVE-2022-21499)

    Aaron Adams discovered that the netfilter subsystem in the Linux kernel did not properly handle the     removal of stateful expressions in some situations, leading to a use-after-free vulnerability. A local     attacker could use this to cause a denial of service (system crash) or execute arbitrary code.
    (CVE-2022-1966)

    Billy Jheng Bing Jhong discovered that the CIFS network file system implementation in the Linux kernel did     not properly validate arguments to ioctl() in some situations. A local attacker could possibly use this to     cause a denial of service (system crash). (CVE-2022-0168)

    Hu Jiahui discovered that multiple race conditions existed in the Advanced Linux Sound Architecture (ALSA)     framework, leading to use-after-free vulnerabilities. A local attacker could use these to cause a denial     of service (system crash) or possibly execute arbitrary code. (CVE-2022-1048)

    Qiuhao Li, Gaoning Pan and Yongkang Jia discovered that the KVM implementation in the Linux kernel did not     properly perform guest page table updates in some situations. An attacker in a guest vm could possibly use     this to crash the host OS. (CVE-2022-1158)

    It was discovered that the implementation of the 6pack and mkiss protocols in the Linux kernel did not     handle detach events properly in some situations, leading to a use-after-free vulnerability. A local     attacker could possibly use this to cause a denial of service (system crash). (CVE-2022-1195)

    Duoming Zhou discovered that the 6pack protocol implementation in the Linux kernel did not handle detach     events properly in some situations, leading to a use-after-free vulnerability. A local attacker could use     this to cause a denial of service (system crash). (CVE-2022-1198)

    Duoming Zhou discovered that the AX.25 amateur radio protocol implementation in the Linux kernel did not     handle detach events properly in some situations. A local attacker could possibly use this to cause a     denial of service (system crash) or execute arbitrary code. (CVE-2022-1199)

    Duoming Zhou discovered race conditions in the AX.25 amateur radio protocol implementation in the Linux     kernel during device detach operations. A local attacker could possibly use this to cause a denial of     service (system crash). (CVE-2022-1204)

    Duoming Zhou discovered race conditions in the AX.25 amateur radio protocol implementation in the Linux     kernel, leading to use-after-free vulnerabilities. A local attacker could possibly use this to cause a     denial of service (system crash). (CVE-2022-1205)

    Qiuhao Li, Gaoning Pan, and Yongkang Jia discovered that the kvm implementation in the Linux kernel did     not handle releasing a virtual cpu properly. A local attacker in a guest VM coud possibly use this to     cause a denial of service (host system crash). (CVE-2022-1263)

    It was discovered that the PF_KEYv2 implementation in the Linux kernel did not properly initialize kernel     memory in some situations. A local attacker could use this to expose sensitive information (kernel     memory). (CVE-2022-1353)

    It was discovered that the implementation of X.25 network protocols in the Linux kernel did not terminate     link layer sessions properly. A local attacker could possibly use this to cause a denial of service     (system crash). (CVE-2022-1516)

    It was discovered that the ACRN Hypervisor Service Module implementation in the Linux kernel did not     properly deallocate memory in some situations. A local privileged attacker could possibly use this to     cause a denial of service (memory exhaustion). (CVE-2022-1651)

    It was discovered that the RxRPC session socket implementation in the Linux kernel did not properly handle     ioctls called when no security protocol is given. A local attacker could use this to cause a denial of     service (system crash) or possibly expose sensitive information (kernel memory). (CVE-2022-1671)

    Ziming Zhang discovered that the netfilter subsystem in the Linux kernel did not properly validate sets     with multiple ranged fields. A local attacker could use this to cause a denial of service or execute     arbitrary code. (CVE-2022-1972)

     discovered that the 802.2 LLC type 2 driver in the Linux kernel did not properly perform     reference counting in some error conditions. A local attacker could use this to cause a denial of service.
    (CVE-2022-28356)

    It was discovered that the 8 Devices USB2CAN interface implementation in the Linux kernel did not properly     handle certain error conditions, leading to a double-free. A local attacker could possibly use this to     cause a denial of service (system crash). (CVE-2022-28388)

    It was discovered that the Microchip CAN BUS Analyzer interface implementation in the Linux kernel did not     properly handle certain error conditions, leading to a double-free. A local attacker could possibly use     this to cause a denial of service (system crash). (CVE-2022-28389)

    It was discovered that the EMS CAN/USB interface implementation in the Linux kernel contained a double-     free vulnerability when handling certain error conditions. A local attacker could use this to cause a     denial of service (memory exhaustion). (CVE-2022-28390)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of kernel-generic installed on the remote host is prior to 5.15.38 / 5.15.38_smp. It is, therefore, affected by multiple vulnerabilities as referenced in the SSA:2022-129-01 advisory.

  - Non-transparent sharing of branch predictor selectors between contexts in some Intel(R) Processors may     allow an authorized user to potentially enable information disclosure via local access. (CVE-2022-0001)

  - Non-transparent sharing of branch predictor within a context in some Intel(R) Processors may allow an     authorized user to potentially enable information disclosure via local access. (CVE-2022-0002)

  - A kernel information leak flaw was identified in the scsi_ioctl function in drivers/scsi/scsi_ioctl.c in     the Linux kernel. This flaw allows a local attacker with a special user privilege (CAP_SYS_ADMIN or     CAP_SYS_RAWIO) to create issues with confidentiality. (CVE-2022-0494)

  - A flaw was found in unrestricted eBPF usage by the BPF_BTF_LOAD, leading to a possible out-of-bounds     memory write in the Linux kernel's BPF subsystem due to the way a user loads BTF. This flaw allows a local     user to crash or escalate their privileges on the system. (CVE-2022-0500)

  - Memory leak in icmp6 implementation in Linux Kernel 5.13+ allows a remote attacker to DoS a host by making     it go out-of-memory via icmp6 packets of type 130 or 131. We recommend upgrading past commit     2d3916f3189172d5c69d33065c3c21119fe539fc. (CVE-2022-0742)

  - A memory leak flaw was found in the Linux kernel's DMA subsystem, in the way a user calls DMA_FROM_DEVICE.
    This flaw allows a local user to read random memory from the kernel space. (CVE-2022-0854)

  - An out-of-bounds (OOB) memory write flaw was found in the Linux kernel's watch_queue event notification     subsystem. This flaw can overwrite parts of the kernel state, potentially allowing a local user to gain     privileged access or cause a denial of service on the system. (CVE-2022-0995)

  - A use-after-free flaw was found in the Linux kernel's FUSE filesystem in the way a user triggers write().
    This flaw allows a local user to gain unauthorized access to data from the FUSE filesystem, resulting in     privilege escalation. (CVE-2022-1011)

  - A flaw was found in the Linux kernel in linux/net/netfilter/nf_tables_api.c of the netfilter subsystem.
    This flaw allows a local user to cause an out-of-bounds write issue. (CVE-2022-1015)

  - A use-after-free flaw was found in the Linux kernel's sound subsystem in the way a user triggers     concurrent calls of PCM hw_params. The hw_free ioctls or similar race condition happens inside ALSA PCM     for other ioctls. This flaw allows a local user to crash or potentially escalate their privileges on the     system. (CVE-2022-1048)

  - A vulnerability was found in the pfkey_register function in net/key/af_key.c in the Linux kernel. This     flaw allows a local, unprivileged user to gain access to kernel memory, leading to a system crash or a     leak of internal kernel information. (CVE-2022-1353)

  - A NULL pointer dereference flaw was found in the Linux kernel's X.25 set of standardized network protocols     functionality in the way a user terminates their session using a simulated Ethernet card and continued     usage of this connection. This flaw allows a local user to crash the system. (CVE-2022-1516)

  - Linux PV device frontends vulnerable to attacks by backends T[his CNA information record relates to     multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Several Linux PV     device frontends are using the grant table interfaces for removing access rights of the backends in ways     being subject to race conditions, resulting in potential data leaks, data corruption by malicious     backends, and denial of service triggered by malicious backends: blkfront, netfront, scsifront and the     gntalloc driver are testing whether a grant reference is still in use. If this is not the case, they     assume that a following removal of the granted access will always succeed, which is not true in case the     backend has mapped the granted page between those two operations. As a result the backend can keep access     to the memory page of the guest no matter how the page will be used after the frontend I/O has finished.
    The xenbus driver has a similar problem, as it doesn't check the success of removing the granted access of     a shared ring buffer. blkfront: CVE-2022-23036 netfront: CVE-2022-23037 scsifront: CVE-2022-23038     gntalloc: CVE-2022-23039 xenbus: CVE-2022-23040 blkfront, netfront, scsifront, usbfront, dmabuf, xenbus,     9p, kbdfront, and pvcalls are using a functionality to delay freeing a grant reference until it is no     longer in use, but the freeing of the related data page is not synchronized with dropping the granted     access. As a result the backend can keep access to the memory page even after it has been freed and then     re-used for a different purpose. CVE-2022-23041 netfront will fail a BUG_ON() assertion if it fails to     revoke access in the rx path. This will result in a Denial of Service (DoS) situation of the guest which     can be triggered by the backend. CVE-2022-23042 (CVE-2022-23036, CVE-2022-23037, CVE-2022-23038,     CVE-2022-23039, CVE-2022-23040, CVE-2022-23041, CVE-2022-23042)

  - kernel/bpf/verifier.c in the Linux kernel through 5.15.14 allows local users to gain privileges because of     the availability of pointer arithmetic via certain *_OR_NULL pointer types. (CVE-2022-23222)

  - Certain Arm Cortex and Neoverse processors through 2022-03-08 do not properly restrict cache speculation,     aka Spectre-BHB. An attacker can leverage the shared branch history in the Branch History Buffer (BHB) to     influence mispredicted branches. Then, cache allocation can allow the attacker to obtain sensitive     information. (CVE-2022-23960)

  - drivers/usb/gadget/legacy/inode.c in the Linux kernel through 5.16.8 mishandles dev->buf release.
    (CVE-2022-24958)

  - st21nfca_connectivity_event_received in drivers/nfc/st21nfca/se.c in the Linux kernel through 5.16.12 has     EVT_TRANSACTION buffer overflows because of untrusted length parameters. (CVE-2022-26490)

  - A heap buffer overflow flaw was found in IPsec ESP transformation code in net/ipv4/esp4.c and     net/ipv6/esp6.c. This flaw allows a local attacker with a normal user privilege to overwrite kernel heap     objects and may cause a local privilege escalation threat. (CVE-2022-27666)

  - In the Linux kernel before 5.17.1, a refcount leak bug was found in net/llc/af_llc.c. (CVE-2022-28356)

  - usb_8dev_start_xmit in drivers/net/can/usb/usb_8dev.c in the Linux kernel through 5.17.1 has a double     free. (CVE-2022-28388)

  - mcba_usb_start_xmit in drivers/net/can/usb/mcba_usb.c in the Linux kernel through 5.17.1 has a double     free. (CVE-2022-28389)

  - ems_usb_start_xmit in drivers/net/can/usb/ems_usb.c in the Linux kernel through 5.17.1 has a double free.
    (CVE-2022-28390)

  - In the Linux kernel before 5.17.3, fs/io_uring.c has a use-after-free due to a race condition in io_uring     timeouts. This can be triggered by a local user who has no access to any user namespace; however, the race     condition perhaps can only be exploited infrequently. (CVE-2022-29582)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
180569	Amazon Linux 2 : kernel (ALASKERNEL-5.15-2023-023)	Nessus	Amazon Linux Local Security Checks	high
173584	CBL Mariner 2.0 Security Update: kernel (CVE-2022-1263)	Nessus	MarinerOS Local Security Checks	medium
173106	Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2023-070)	Nessus	Amazon Linux Local Security Checks	high
169292	SUSE SLES15 Security Update : kernel (SUSE-SU-2022:4617-1)	Nessus	SuSE Local Security Checks	high
167155	RHEL 8 : kernel (RHSA-2022:7683)	Nessus	Red Hat Local Security Checks	high
167095	RHEL 8 : kernel-rt (RHSA-2022:7444)	Nessus	Red Hat Local Security Checks	high
167017	Amazon Linux 2022 : bpftool, kernel, kernel-devel (ALAS2022-2022-185)	Nessus	Amazon Linux Local Security Checks	high
166793	SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2022:3844-1)	Nessus	SuSE Local Security Checks	high
166146	SUSE SLES15 Security Update : kernel (SUSE-SU-2022:3585-1)	Nessus	SuSE Local Security Checks	high
164723	Amazon Linux 2022 : bpftool, kernel, kernel-devel (ALAS2022-2022-083)	Nessus	Amazon Linux Local Security Checks	high
162661	Oracle Linux 8 : Unbreakable Enterprise kernel-container (ELSA-2022-9534)	Nessus	Oracle Linux Local Security Checks	high
162660	Oracle Linux 8 : Unbreakable Enterprise kernel (ELSA-2022-9533)	Nessus	Oracle Linux Local Security Checks	high
162006	Amazon Linux 2 : kernel (ALASKERNEL-5.15-2022-001)	Nessus	Amazon Linux Local Security Checks	high
161955	Ubuntu 22.04 LTS : Linux kernel vulnerabilities (USN-5469-1)	Nessus	Ubuntu Local Security Checks	high
160874	Slackware Linux 15.0 kernel-generic Multiple Vulnerabilities (SSA:2022-129-01)	Nessus	Slackware Local Security Checks	high

Detections

Analytics

CVE-2022-1263

medium

Tenable Plugins

high

medium

high

high

high

high

high

high

high

high

high

high

high

high

high