In the Linux kernel, the following vulnerability has been resolved: net: hso: fix NULL-deref on disconnect regression Commit 8a12f8836145 ("net: hso: fix null-ptr-deref during tty device unregistration") fixed the racy minor allocation reported by syzbot, but introduced an unconditional NULL-pointer dereference on every disconnect instead. Specifically, the serial device table must no longer be accessed after the minor has been released by hso_serial_tty_unregister().

The remote SUSE Linux SLED12 / SLED_SAP12 / SLES12 / SLES_SAP12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2024:1648-1 advisory.

  - Use After Free vulnerability in nfc sockets in the Linux Kernel before 5.12.4 allows local attackers to     elevate their privileges. In typical configurations, the issue can only be triggered by a privileged local     user with the CAP_NET_RAW capability. (CVE-2021-23134)

  - In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Fix double free of the     ha->vp_map pointer Coverity scan reported potential risk of double free of the pointer ha->vp_map.
    ha->vp_map was freed in qla2x00_mem_alloc(), and again freed in function qla2x00_mem_free(ha). Assign NULL     to vp_map and kfree take care of NULL. (CVE-2024-26930)

  - In the Linux kernel, the following vulnerability has been resolved: netlabel: fix out-of-bounds memory     accesses There are two array out-of-bounds memory accesses, one in cipso_v4_map_lvl_valid(), the other in     netlbl_bitmap_walk(). Both errors are embarassingly simple, and the fixes are straightforward. As a FYI     for anyone backporting this patch to kernels prior to v4.8, you'll want to apply the netlbl_bitmap_walk()     patch to cipso_v4_bitmap_walk() as netlbl_bitmap_walk() doesn't exist before Linux v4.8. (CVE-2019-25160)

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-2024:0926-1 advisory.

    The SUSE Linux Enterprise 15 SP2 kernel was updated to receive various security bugfixes.

    The following security bugs were fixed:

    - CVE-2021-47078: Fixed a bug by clearing all QP fields if creation failed (bsc#1220863)
    - CVE-2021-47076: Fixed a bug by returning CQE error if invalid lkey was supplied (bsc#1220860)
    - CVE-2023-52605: Fixed a NULL pointer dereference check (bsc#1221039)
    - CVE-2023-28746: Fixed Register File Data Sampling (bsc#1213456).
    - CVE-2023-52502: Fixed a race condition in nfc_llcp_sock_get() and nfc_llcp_sock_get_sn() (bsc#1220831).
    - CVE-2023-52569: Fixed a bug in btrfs by remoning BUG() after failure to insert delayed dir index item     (bsc#1220918).
    - CVE-2023-52482: Fixed a bug by adding SRSO mitigation for Hygon processors (bsc#1220735).
    - CVE-2023-52597: Fixed a setting of fpc register in KVM (bsc#1221040).
    - CVE-2022-48627: Fixed a memory overlapping when deleting chars in the buffer (bsc#1220845).
    - CVE-2023-52574: Fixed a bug by hiding new member header_ops (bsc#1220870).
    - CVE-2021-46934: Fixed a bug by validating user data in compat ioctl (bsc#1220469).
    - CVE-2023-35827: Fixed a use-after-free issue in ravb_tx_timeout_work() (bsc#1212514).
    - CVE-2023-52532: Fixed a bug in TX CQE error handling (bsc#1220932).
    - CVE-2023-52530: Fixed a potential key use-after-free in wifi mac80211 (bsc#1220930).
    - CVE-2023-52531: Fixed a memory corruption issue in iwlwifi (bsc#1220931).
    - CVE-2021-47083: Fixed a global-out-of-bounds issue in mediatek: (bsc#1220917).
    - CVE-2024-26607: Fixed a probing race issue in sii902x: (bsc#1220736).
    - CVE-2024-26589: Fixed out of bounds read due to variable offset alu on PTR_TO_FLOW_KEYS (bsc#1220255).
    - CVE-2021-47005: Fixed a NULL pointer dereference for ->get_features() (bsc#1220660).
    - CVE-2024-26585: Fixed race between tx work scheduling and socket close  (bsc#1220187).
    - CVE-2023-52340: Fixed ICMPv6 Packet Too Big packets force a DoS of the Linux kernel by forcing     100% CPU (bsc#1219295).
    - CVE-2024-0607: Fixed 64-bit load issue in  nft_byteorder_eval() (bsc#1218915).
    - CVE-2021-47060: Fixed a bug in KVM by stop looking for coalesced MMIO zones if the bus is destroyed     (bsc#1220742).
    - CVE-2024-26622: Fixed UAF write bug in tomoyo_write_control() (bsc#1220825).
    - CVE-2023-52451: Fixed access beyond end of drmem array  (bsc#1220250).
    - CVE-2021-46932: Fixed missing work initialization before device registration (bsc#1220444)
    - CVE-2023-52463: Fixed null pointer dereference in efivarfs (bsc#1220328).
    - CVE-2021-47012: Fixed a use after free in siw_alloc_mr (bsc#1220627).
    - CVE-2023-52449: Fixed gluebi NULL pointer dereference caused by ftl notifier  (bsc#1220238).
    - CVE-2023-52475: Fixed use-after-free in powermate_config_complete (bsc#1220649)
    - CVE-2023-52478: Fixed kernel crash on receiver USB disconnect (bsc#1220796)
    - CVE-2021-46989: Fixed a bug by preventing corruption in shrinking truncate in hfsplus (bsc#1220737).
    - CVE-2021-46915: Fixed a bug to avoid possible divide error in nft_limit_init (bsc#1220436).
    - CVE-2021-46924: Fixed fix memory leak in device probe and remove (bsc#1220459)
    - CVE-2019-25162: Fixed a potential use after free (bsc#1220409).
    - CVE-2020-36784: Fixed reference leak when pm_runtime_get_sync fails (bsc#1220570).
    - CVE-2021-47061: Fixed a bug in KVM by destroy I/O bus devices on unregister failure _after_  sync'ing     SRCU (bsc#1220745).
    - CVE-2023-52445: Fixed use after free on context disconnection (bsc#1220241).
    - CVE-2023-46343: Fixed a NULL pointer dereference in send_acknowledge() (CVE-2023-46343).
    - CVE-2023-52439: Fixed use-after-free in uio_open (bsc#1220140).
    - CVE-2023-52443: Fixed crash when parsed profile name is empty  (bsc#1220240).
    - CVE-2024-26602: Fixed overall slowdowns with sys_membarrier (bsc1220398).
    - CVE-2024-26593: Fixed block process call transactions (bsc#1220009).
    - CVE-2021-47013: Fixed a use after free in emac_mac_tx_buf_send (bsc#1220641).
    - CVE-2024-26586: Fixed stack corruption (bsc#1220243).
    - CVE-2024-26595: Fixed NULL pointer dereference in  error path (bsc#1220344).
    - CVE-2023-52448: Fixed kernel NULL pointer dereference in gfs2_rgrp_dump  (bsc#1220253).
    - CVE-2024-1151: Fixed unlimited number of recursions from action  sets (bsc#1219835).
    - CVE-2024-23849: Fixed array-index-out-of-bounds in rds_cmsg_recv  (bsc#1219127).
    - CVE-2024-0340: Fixed information disclosure in vhost/vhost.c:vhost_new_msg() (bsc#1218689).
    - CVE-2023-51042: Fixed use-after-free in amdgpu_cs_wait_all_fences in     drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c (bsc#1219128).

    The following non-security bugs were fixed:

    - EDAC/thunderx: Fix possible out-of-bounds string access (bsc#1220330)
    - KVM: Destroy target device if coalesced MMIO unregistration fails (git-fixes).
    - KVM: mmio: Fix use-after-free Read in kvm_vm_ioctl_unregister_coalesced_mmio (git-fixes).
    - KVM: VMX: Move VERW closer to VMentry for MDS mitigation (git-fixes).
    - KVM: VMX: Use BT+JNC, i.e. EFLAGS.CF to select VMRESUME vs. VMLAUNCH (git-fixes).
    - KVM: x86: add support for CPUID leaf 0x80000021 (git-fixes).
    - KVM: x86: Move open-coded CPUID leaf 0x80000021 EAX bit propagation code (git-fixes).
    - KVM: x86: synthesize CPUID leaf 0x80000021h if useful (git-fixes).
    - KVM: x86: work around QEMU issue with synthetic CPUID leaves (git-fixes).
    - x86/asm: Add _ASM_RIP() macro for x86-64 (%rip) suffix (git-fixes).
    - x86/bugs: Add asm helpers for executing VERW (git-fixes).
    - x86/bugs: Use ALTERNATIVE() instead of mds_user_clear static key (git-fixes).
    - x86/cpu, kvm: Move X86_FEATURE_LFENCE_RDTSC to its native leaf (git-fixes).
    - x86/entry_32: Add VERW just before userspace transition (git-fixes).
    - x86/entry_64: Add VERW just before userspace transition (git-fixes).

Tenable has extracted the preceding description block directly from the SUSE 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 SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2024:0857-1 advisory.

    The SUSE Linux Enterprise 15 SP3 kernel was updated to receive various security bugfixes.

    The following security bugs were fixed:

    - CVE-2023-28746: Fixed Register File Data Sampling (bsc#1213456).
    - CVE-2023-52502: Fixed a race condition in nfc_llcp_sock_get() and nfc_llcp_sock_get_sn() (bsc#1220831).
    - CVE-2024-26589: Fixed out of bounds read due to variable offset alu on PTR_TO_FLOW_KEYS (bsc#1220255).
    - CVE-2024-26585: Fixed race between tx work scheduling and socket close  (bsc#1220187).
    - CVE-2023-52340: Fixed ICMPv6 Packet Too Big packets force a DoS of the Linux kernel by forcing     100% CPU (bsc#1219295).
    - CVE-2024-0607: Fixed 64-bit load issue in  nft_byteorder_eval() (bsc#1218915).
    - CVE-2023-6817: Fixed use-after-free in nft_pipapo_walk (bsc#1218195).
    - CVE-2024-26622: Fixed UAF write bug in tomoyo_write_control() (bsc#1220825).
    - CVE-2023-52451: Fixed access beyond end of drmem array  (bsc#1220250).
    - CVE-2021-46932: Fixed missing work initialization before device registration (bsc#1220444)
    - CVE-2023-52463: Fixed null pointer dereference in efivarfs (bsc#1220328).
    - CVE-2023-52449: Fixed gluebi NULL pointer dereference caused by ftl notifier  (bsc#1220238).
    - CVE-2023-52475: Fixed use-after-free in powermate_config_complete (bsc#1220649)
    - CVE-2023-52478: Fixed kernel crash on receiver USB disconnect (bsc#1220796)
    - CVE-2021-46915: Fixed a bug to avoid possible divide error in nft_limit_init (bsc#1220436).
    - CVE-2021-46924: Fixed fix memory leak in device probe and remove (bsc#1220459)
    - CVE-2019-25162: Fixed a potential use after free (bsc#1220409).
    - CVE-2020-36784: Fixed reference leak when pm_runtime_get_sync fails (bsc#1220570).
    - CVE-2023-52445: Fixed use after free on context disconnection (bsc#1220241).
    - CVE-2023-46343: Fixed a NULL pointer dereference in send_acknowledge() (CVE-2023-46343).
    - CVE-2023-52439: Fixed use-after-free in uio_open (bsc#1220140).
    - CVE-2023-52443: Fixed crash when parsed profile name is empty  (bsc#1220240).
    - CVE-2024-26602: Fixed overall slowdowns with sys_membarrier (bsc1220398).
    - CVE-2024-26593: Fixed block process call transactions (bsc#1220009).
    - CVE-2021-47013: Fixed a use after free in emac_mac_tx_buf_send (bsc#1220641).
    - CVE-2024-26586: Fixed stack corruption (bsc#1220243).
    - CVE-2024-26595: Fixed NULL pointer dereference in  error path (bsc#1220344).
    - CVE-2023-52448: Fixed kernel NULL pointer dereference in gfs2_rgrp_dump  (bsc#1220253).
    - CVE-2024-1151: Fixed unlimited number of recursions from action  sets (bsc#1219835).
    - CVE-2024-23849: Fixed array-index-out-of-bounds in rds_cmsg_recv  (bsc#1219127).
    - CVE-2024-0340: Fixed information disclosure in vhost/vhost.c:vhost_new_msg() (bsc#1218689).
    - CVE-2023-51042: Fixed use-after-free in amdgpu_cs_wait_all_fences in     drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c (bsc#1219128).
    - CVE-2021-47078: Fixed a bug by clearing all QP fields if creation failed (bsc#1220863)
    - CVE-2021-47076: Fixed a bug by returning CQE error if invalid lkey was supplied (bsc#1220860)
    - CVE-2023-52605: Fixed a NULL pointer dereference check (bsc#1221039)
    - CVE-2023-52569: Fixed a bug in btrfs by remoning BUG() after failure to insert delayed dir index item     (bsc#1220918).
    - CVE-2023-52482: Fixex a bug by adding SRSO mitigation for Hygon processors (bsc#1220735).
    - CVE-2023-52597: Fixed a setting of fpc register in KVM (bsc#1221040).
    - CVE-2022-48627: Fixed a memory overlapping when deleting chars in the buffer (bsc#1220845).
    - CVE-2023-52574: Fixed a bug by hiding new member header_ops (bsc#1220870).
    - CVE-2021-46934: Fixed a bug by validating user data in compat ioctl (bsc#1220469).
    - CVE-2023-35827: Fixed a use-after-free issue in ravb_tx_timeout_work() (bsc#1212514).
    - CVE-2023-52532: Fixed a bug in TX CQE error handling (bsc#1220932).
    - CVE-2023-52530: Fixed a potential key use-after-free in wifi mac80211 (bsc#1220930).
    - CVE-2023-52531: Fixed a memory corruption issue in iwlwifi (bsc#1220931).
    - CVE-2021-47083: Fixed a global-out-of-bounds issue in mediatek: (bsc#1220917).
    - CVE-2024-26607: Fixed a probing race issue in sii902x: (bsc#1220736).
    - CVE-2021-47005: Fixed a NULL pointer dereference for ->get_features() (bsc#1220660).
    - CVE-2021-47060: Fixed a bug in KVM by stop looking for coalesced MMIO zones if the bus is destroyed     (bsc#1220742).
    - CVE-2021-47012: Fixed a use after free in siw_alloc_mr (bsc#1220627).
    - CVE-2021-46989: Fixed a bug by preventing corruption in shrinking truncate in hfsplus (bsc#1220737).
    - CVE-2021-47061: Fixed a bug in KVM by destroy I/O bus devices on unregister failure _after_  sync'ing     SRCU (bsc#1220745).

    The following non-security bugs were fixed:

    - EDAC/thunderx: Fix possible out-of-bounds string access (bsc#1220330)
    - ext4: fix deadlock due to mbcache entry corruption (bsc#1207653 bsc#1219915).
    - ibmvfc: make 'max_sectors' a module option (bsc#1216223).
    - KVM: Destroy target device if coalesced MMIO unregistration fails (git-fixes).
    - KVM: mmio: Fix use-after-free Read in kvm_vm_ioctl_unregister_coalesced_mmio (git-fixes).
    - KVM: VMX: Move VERW closer to VMentry for MDS mitigation (git-fixes).
    - KVM: VMX: Use BT+JNC, i.e. EFLAGS.CF to select VMRESUME vs. VMLAUNCH (git-fixes).
    - KVM: x86: add support for CPUID leaf 0x80000021 (git-fixes).
    - KVM: x86: Move open-coded CPUID leaf 0x80000021 EAX bit propagation code (git-fixes).
    - KVM: x86: synthesize CPUID leaf 0x80000021h if useful (git-fixes).
    - KVM: x86: work around QEMU issue with synthetic CPUID leaves (git-fixes).
    - mbcache: Fixup kABI of mb_cache_entry (bsc#1207653 bsc#1219915).
    - scsi: Update max_hw_sectors on rescan (bsc#1216223).
    - x86/asm: Add _ASM_RIP() macro for x86-64 (%rip) suffix (git-fixes).
    - x86/bugs: Add asm helpers for executing VERW (git-fixes).
    - x86/bugs: Use ALTERNATIVE() instead of mds_user_clear static key (git-fixes). Also add the removed     mds_user_clear symbol to kABI severities as it is exposed just for KVM module and is generally a core     kernel component so removing it is low risk.
    - x86/cpu, kvm: Move X86_FEATURE_LFENCE_RDTSC to its native leaf (git-fixes).
    - x86/entry_32: Add VERW just before userspace transition (git-fixes).
    - x86/entry_64: Add VERW just before userspace transition (git-fixes).

Tenable has extracted the preceding description block directly from the SUSE 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 5.10.35-31.135. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.10-2022-001 advisory.

    2024-05-23: CVE-2021-46972 was added to this advisory.

    2024-05-23: CVE-2021-46974 was added to this advisory.

    2024-05-23: CVE-2021-46909 was added to this advisory.

    2024-04-25: CVE-2021-46922 was added to this advisory.

    2024-04-25: CVE-2021-46912 was added to this advisory.

    2024-04-25: CVE-2021-46908 was added to this advisory.

    2024-04-25: CVE-2021-46914 was added to this advisory.

    2024-04-25: CVE-2021-46971 was added to this advisory.

    2024-03-13: CVE-2021-46915 was added to this advisory.

    2024-03-13: CVE-2021-46904 was added to this advisory.

    2024-03-13: CVE-2021-46905 was added to this advisory.

    A use-after-free flaw was found in the Linux kernel's NFC LLCP protocol implementation in the way the user     performs manipulation with an unknown input for the llcp_sock_bind() function. This flaw allows a local     user to crash or escalate their privileges on the system. (CVE-2020-25670)

    A use-after-free flaw was found in the Linux kernel's NFC LLCP protocol implementation in the way the user     triggers the llcp_sock_connect() function. This flaw allows a local user to crash the system.
    (CVE-2020-25671)

    A memory leak in the Linux kernel's NFC LLCP protocol implementation was found in the way a user triggers     the llcp_sock_connect() function. This flaw allows a local user to starve the resources, causing a denial     of service. (CVE-2020-25672)

    A vulnerability was found in Linux kernel where non-blocking socket in llcp_sock_connect() leads to leak     and eventually hanging-up the system. (CVE-2020-25673)

    A use-after-free flaw was found in the Linux kernel's SCTP socket functionality that triggers a race     condition. This flaw allows a local user to escalate their privileges on the system. The highest threat     from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2021-23133)

    A vulnerability was discovered in retrieve_ptr_limit in kernel/bpf/verifier.c in the Linux kernel     mechanism to mitigate speculatively out-of-bounds loads (Spectre mitigation). In this flaw a local,     special user privileged (CAP_SYS_ADMIN) BPF program running on affected systems may bypass the protection,     and execute speculatively out-of-bounds loads from the kernel memory. This can be abused to extract     contents of kernel memory via side-channel. (CVE-2021-29155)

    A flaw was found in the Linux kernel's eBPF verification code. By default, accessing the eBPF verifier is     only accessible to privileged users with CAP_SYS_ADMIN. This flaw allows a local user who can insert eBPF     instructions, to use the eBPF verifier to abuse a spectre-like flaw and infer all system memory. The     highest threat from this vulnerability is to confidentiality. (CVE-2021-31829)

    The eBPF RINGBUF bpf_ringbuf_reserve() function in the Linux kernel did not check that the allocated size     was smaller than the ringbuf size, allowing an attacker to perform out-of-bounds writes within the kernel     and therefore, arbitrary code execution. This issue was fixed via commit 4b81ccebaeee (bpf, ringbuf: Deny     reserve of buffers larger than ringbuf) (v5.13-rc4) and backported to the stable kernels in v5.12.4,     v5.11.21, and v5.10.37. It was introduced via 457f44363a88 (bpf: Implement BPF ring buffer and verifier     support for it) (v5.8-rc1). (CVE-2021-3489)

    The eBPF ALU32 bounds tracking for bitwise ops (AND, OR and XOR) in the Linux kernel did not properly     update 32-bit bounds, which could be turned into out of bounds reads and writes in the Linux kernel and     therefore, arbitrary code execution. This issue was fixed via commit 049c4e13714e (bpf: Fix alu32 const     subreg bound tracking on bitwise operations) (v5.13-rc4) and backported to the stable kernels in v5.12.4,     v5.11.21, and v5.10.37. The AND/OR issues were introduced by commit 3f50f132d840 (bpf: Verifier, do     explicit ALU32 bounds tracking) (5.7-rc1) and the XOR variant was introduced by 2921c90d4718 (bpf:Fix a     verifier failure with xor) ( 5.10-rc1). (CVE-2021-3490)

    A flaw was found in the Linux kernel.  The io_uring PROVIDE_BUFFERS operation allowed the MAX_RW_COUNT     limit to be bypassed, which led to negative values being used in mem_rw when reading /proc/<PID>/mem. The     highest threat from this vulnerability is to data confidentiality and integrity as well as system     availability. (CVE-2021-3491)

    A flaw was found in the Linux kernel in versions before 5.12. The value of internal.ndata, in the KVM API,     is mapped to an array index, which can be updated by a user process at anytime which could lead to an out-     of-bounds write. The highest threat from this vulnerability is to data integrity and system availability.
    (CVE-2021-3501)

    In the Linux kernel, the following vulnerability has been resolved:

    net: hso: fix null-ptr-deref during tty device unregistration

    Multiple ttys try to claim the same the minor number causing a doubleunregistration of the same device.
    The first unregistration succeedsbut the next one results in a null-ptr-deref.

    The get_free_serial_index() function returns an available minor numberbut doesn't assign it immediately.
    The assignment is done by the callerlater. But before this assignment, calls to     get_free_serial_index()would return the same minor number.

    Fix this by modifying get_free_serial_index to assign the minor numberimmediately after one is found to be     and rename it to obtain_minor()to better reflect what it does. Similary, rename set_serial_by_index()to     release_minor() and modify it to free up the minor number of thegiven hso_serial. Every obtain_minor()     should have correspondingrelease_minor() call. (CVE-2021-46904)

    In the Linux kernel, the following vulnerability has been resolved:

    net: hso: fix NULL-deref on disconnect regression

    Commit 8a12f8836145 (net: hso: fix null-ptr-deref during tty deviceunregistration) fixed the racy minor     allocation reported by syzbot, butintroduced an unconditional NULL-pointer dereference on every     disconnectinstead.

    Specifically, the serial device table must no longer be accessed afterthe minor has been released by     hso_serial_tty_unregister(). (CVE-2021-46905)

    In the Linux kernel, the following vulnerability has been resolved:

    bpf: Use correct permission flag for mixed signed bounds arithmetic

    We forbid adding unknown scalars with mixed signed bounds due to thespectre v1 masking mitigation. Hence     this also needs bypass_spec_v1flag instead of allow_ptr_leaks. (CVE-2021-46908)

    In the Linux kernel, the following vulnerability has been resolved:

    ARM: footbridge: fix PCI interrupt mapping (CVE-2021-46909)

    In the Linux kernel, the following vulnerability has been resolved:

    net: Make tcp_allowed_congestion_control readonly in non-init netns (CVE-2021-46912)

    In the Linux kernel, the following vulnerability has been resolved:

    ixgbe: fix unbalanced device enable/disable in suspend/resume (CVE-2021-46914)

    In the Linux kernel, the following vulnerability has been resolved:

    netfilter: nft_limit: avoid possible divide error in nft_limit_init

    div_u64() divides u64 by u32.

    nft_limit_init() wants to divide u64 by u64, use the appropriatemath function (div64_u64)

    divide error: 0000 [#1] PREEMPT SMP KASANCPU: 1 PID: 8390 Comm: syz-executor188 Not tainted     5.12.0-rc4-syzkaller #0Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google     01/01/2011RIP: 0010:div_u64_rem include/linux/math64.h:28 [inline]RIP: 0010:div_u64     include/linux/math64.h:127 [inline]RIP: 0010:nft_limit_init+0x2a2/0x5e0 net/netfilter/nft_limit.c:85Code:
    ef 4c 01 eb 41 0f 92 c7 48 89 de e8 38 a5 22 fa 4d 85 ff 0f 85 97 02 00 00 e8 ea 9e 22 fa 4c 0f af f3 45     89 ed 31 d2 4c 89 f0 <49> f7 f5 49 89 c6 e8 d3 9e 22 fa 48 8d 7d 48 48 b8 00 00 00 00 00RSP:
    0018:ffffc90009447198 EFLAGS: 00010246RAX: 0000000000000000 RBX: 0000200000000000 RCX:
    0000000000000000RDX: 0000000000000000 RSI: ffffffff875152e6 RDI: 0000000000000003RBP: ffff888020f80908     R08: 0000200000000000 R09: 0000000000000000R10: ffffffff875152d8 R11: 0000000000000000 R12:
    ffffc90009447270R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000FS:
    000000000097a300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000CS:  0010 DS: 0000 ES: 0000 CR0:
    0000000080050033CR2: 00000000200001c4 CR3: 0000000026a52000 CR4: 00000000001506e0DR0: 0000000000000000     DR1: 0000000000000000 DR2: 0000000000000000DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
    0000000000000400Call Trace:nf_tables_newexpr net/netfilter/nf_tables_api.c:2675     [inline]nft_expr_init+0x145/0x2d0 net/netfilter/nf_tables_api.c:2713nft_set_elem_expr_alloc+0x27/0x280     net/netfilter/nf_tables_api.c:5160nf_tables_newset+0x1997/0x3150     net/netfilter/nf_tables_api.c:4321nfnetlink_rcv_batch+0x85a/0x21b0     net/netfilter/nfnetlink.c:456nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:580     [inline]nfnetlink_rcv+0x3af/0x420 net/netfilter/nfnetlink.c:598netlink_unicast_kernel     net/netlink/af_netlink.c:1312 [inline]netlink_unicast+0x533/0x7d0     net/netlink/af_netlink.c:1338netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1927sock_sendmsg_nosec     net/socket.c:654 [inline]sock_sendmsg+0xcf/0x120 net/socket.c:674____sys_sendmsg+0x6e8/0x810     net/socket.c:2350___sys_sendmsg+0xf3/0x170 net/socket.c:2404__sys_sendmsg+0xe5/0x1b0     net/socket.c:2433do_syscall_64+0x2d/0x70     arch/x86/entry/common.c:46entry_SYSCALL_64_after_hwframe+0x44/0xae (CVE-2021-46915)

    In the Linux kernel, the following vulnerability has been resolved:

    KEYS: trusted: Fix TPM reservation for seal/unseal (CVE-2021-46922)

    In the Linux kernel, the following vulnerability has been resolved:

    perf/core: Fix unconditional security_locked_down() call (CVE-2021-46971)

    In the Linux kernel, the following vulnerability has been resolved:

    ovl: fix leaked dentry (CVE-2021-46972)

    In the Linux kernel, the following vulnerability has been resolved:

    bpf: Fix masking negation logic upon negative dst register (CVE-2021-46974)

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 host is prior to 5.4.117-58.216. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.4-2022-003 advisory.

    2024-05-23: CVE-2021-46974 was added to this advisory.

    2024-05-23: CVE-2021-46909 was added to this advisory.

    2024-04-25: CVE-2021-46971 was added to this advisory.

    2024-03-13: CVE-2021-46915 was added to this advisory.

    2024-03-13: CVE-2021-46904 was added to this advisory.

    2024-03-13: CVE-2021-46905 was added to this advisory.

    A use-after-free flaw was found in the Linux kernel's NFC LLCP protocol implementation in the way the user     performs manipulation with an unknown input for the llcp_sock_bind() function. This flaw allows a local     user to crash or escalate their privileges on the system. (CVE-2020-25670)

    A use-after-free flaw was found in the Linux kernel's NFC LLCP protocol implementation in the way the user     triggers the llcp_sock_connect() function. This flaw allows a local user to crash the system.
    (CVE-2020-25671)

    A memory leak in the Linux kernel's NFC LLCP protocol implementation was found in the way a user triggers     the llcp_sock_connect() function. This flaw allows a local user to starve the resources, causing a denial     of service. (CVE-2020-25672)

    A vulnerability was found in Linux kernel where non-blocking socket in llcp_sock_connect() leads to leak     and eventually hanging-up the system. (CVE-2020-25673)

    A use-after-free flaw was found in the Linux kernel's SCTP socket functionality that triggers a race     condition. This flaw allows a local user to escalate their privileges on the system. The highest threat     from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2021-23133)

    A flaw was found in the Linux kernels eBPF implementation. By default, accessing the eBPF verifier is only     accessible to privileged users with CAP_SYS_ADMIN.   A local user with the ability to insert eBPF     instructions can abuse a flaw in eBPF to corrupt memory. The highest threat from this vulnerability is to     confidentiality, integrity, as well as system availability. (CVE-2021-29154)

    A vulnerability was discovered in retrieve_ptr_limit in kernel/bpf/verifier.c in the Linux kernel     mechanism to mitigate speculatively out-of-bounds loads (Spectre mitigation). In this flaw a local,     special user privileged (CAP_SYS_ADMIN) BPF program running on affected systems may bypass the protection,     and execute speculatively out-of-bounds loads from the kernel memory. This can be abused to extract     contents of kernel memory via side-channel. (CVE-2021-29155)

    A flaw was found in the Linux kernel's eBPF verification code. By default, accessing the eBPF verifier is     only accessible to privileged users with CAP_SYS_ADMIN. This flaw allows a local user who can insert eBPF     instructions, to use the eBPF verifier to abuse a spectre-like flaw and infer all system memory. The     highest threat from this vulnerability is to confidentiality. (CVE-2021-31829)

    In the Linux kernel, the following vulnerability has been resolved:

    net: hso: fix null-ptr-deref during tty device unregistration

    Multiple ttys try to claim the same the minor number causing a doubleunregistration of the same device.
    The first unregistration succeedsbut the next one results in a null-ptr-deref.

    The get_free_serial_index() function returns an available minor numberbut doesn't assign it immediately.
    The assignment is done by the callerlater. But before this assignment, calls to     get_free_serial_index()would return the same minor number.

    Fix this by modifying get_free_serial_index to assign the minor numberimmediately after one is found to be     and rename it to obtain_minor()to better reflect what it does. Similary, rename set_serial_by_index()to     release_minor() and modify it to free up the minor number of thegiven hso_serial. Every obtain_minor()     should have correspondingrelease_minor() call. (CVE-2021-46904)

    In the Linux kernel, the following vulnerability has been resolved:

    net: hso: fix NULL-deref on disconnect regression

    Commit 8a12f8836145 (net: hso: fix null-ptr-deref during tty deviceunregistration) fixed the racy minor     allocation reported by syzbot, butintroduced an unconditional NULL-pointer dereference on every     disconnectinstead.

    Specifically, the serial device table must no longer be accessed afterthe minor has been released by     hso_serial_tty_unregister(). (CVE-2021-46905)

    In the Linux kernel, the following vulnerability has been resolved:

    ARM: footbridge: fix PCI interrupt mapping (CVE-2021-46909)

    In the Linux kernel, the following vulnerability has been resolved:

    netfilter: nft_limit: avoid possible divide error in nft_limit_init

    div_u64() divides u64 by u32.

    nft_limit_init() wants to divide u64 by u64, use the appropriatemath function (div64_u64)

    divide error: 0000 [#1] PREEMPT SMP KASANCPU: 1 PID: 8390 Comm: syz-executor188 Not tainted     5.12.0-rc4-syzkaller #0Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google     01/01/2011RIP: 0010:div_u64_rem include/linux/math64.h:28 [inline]RIP: 0010:div_u64     include/linux/math64.h:127 [inline]RIP: 0010:nft_limit_init+0x2a2/0x5e0 net/netfilter/nft_limit.c:85Code:
    ef 4c 01 eb 41 0f 92 c7 48 89 de e8 38 a5 22 fa 4d 85 ff 0f 85 97 02 00 00 e8 ea 9e 22 fa 4c 0f af f3 45     89 ed 31 d2 4c 89 f0 <49> f7 f5 49 89 c6 e8 d3 9e 22 fa 48 8d 7d 48 48 b8 00 00 00 00 00RSP:
    0018:ffffc90009447198 EFLAGS: 00010246RAX: 0000000000000000 RBX: 0000200000000000 RCX:
    0000000000000000RDX: 0000000000000000 RSI: ffffffff875152e6 RDI: 0000000000000003RBP: ffff888020f80908     R08: 0000200000000000 R09: 0000000000000000R10: ffffffff875152d8 R11: 0000000000000000 R12:
    ffffc90009447270R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000FS:
    000000000097a300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000CS:  0010 DS: 0000 ES: 0000 CR0:
    0000000080050033CR2: 00000000200001c4 CR3: 0000000026a52000 CR4: 00000000001506e0DR0: 0000000000000000     DR1: 0000000000000000 DR2: 0000000000000000DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
    0000000000000400Call Trace:nf_tables_newexpr net/netfilter/nf_tables_api.c:2675     [inline]nft_expr_init+0x145/0x2d0 net/netfilter/nf_tables_api.c:2713nft_set_elem_expr_alloc+0x27/0x280     net/netfilter/nf_tables_api.c:5160nf_tables_newset+0x1997/0x3150     net/netfilter/nf_tables_api.c:4321nfnetlink_rcv_batch+0x85a/0x21b0     net/netfilter/nfnetlink.c:456nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:580     [inline]nfnetlink_rcv+0x3af/0x420 net/netfilter/nfnetlink.c:598netlink_unicast_kernel     net/netlink/af_netlink.c:1312 [inline]netlink_unicast+0x533/0x7d0     net/netlink/af_netlink.c:1338netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1927sock_sendmsg_nosec     net/socket.c:654 [inline]sock_sendmsg+0xcf/0x120 net/socket.c:674____sys_sendmsg+0x6e8/0x810     net/socket.c:2350___sys_sendmsg+0xf3/0x170 net/socket.c:2404__sys_sendmsg+0xe5/0x1b0     net/socket.c:2433do_syscall_64+0x2d/0x70     arch/x86/entry/common.c:46entry_SYSCALL_64_after_hwframe+0x44/0xae (CVE-2021-46915)

    In the Linux kernel, the following vulnerability has been resolved:

    perf/core: Fix unconditional security_locked_down() call (CVE-2021-46971)

    In the Linux kernel, the following vulnerability has been resolved:

    bpf: Fix masking negation logic upon negative dst register (CVE-2021-46974)

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 host is prior to 4.14.232-176.381. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2021-1636 advisory.

    2024-05-23: CVE-2021-46909 was added to this advisory.

    2024-05-23: CVE-2021-46974 was added to this advisory.

    2024-03-13: CVE-2021-46905 was added to this advisory.

    2024-03-13: CVE-2021-46904 was added to this advisory.

    2024-03-13: CVE-2021-46915 was added to this advisory.

    An issue was discovered in the Linux kernel related to mm/gup.c and mm/huge_memory.c. The get_user_pages     (aka gup) implementation, when used for a copy-on-write page, does not properly consider the semantics of     read operations and therefore can grant unintended read access. (CVE-2020-29374)

    A use-after-free flaw was found in the Linux kernel's SCTP socket functionality that triggers a race     condition. This flaw allows a local user to escalate their privileges on the system. The highest threat     from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2021-23133)

    A vulnerability was discovered in retrieve_ptr_limit in kernel/bpf/verifier.c in the Linux kernel     mechanism to mitigate speculatively out-of-bounds loads (Spectre mitigation). In this flaw a local,     special user privileged (CAP_SYS_ADMIN) BPF program running on affected systems may bypass the protection,     and execute speculatively out-of-bounds loads from the kernel memory. This can be abused to extract     contents of kernel memory via side-channel. (CVE-2021-29155)

    A flaw was found in the Linux kernel's eBPF verification code. By default, accessing the eBPF verifier is     only accessible to privileged users with CAP_SYS_ADMIN. This flaw allows a local user who can insert eBPF     instructions, to use the eBPF verifier to abuse a spectre-like flaw and infer all system memory. The     highest threat from this vulnerability is to confidentiality. (CVE-2021-31829)

    In the Linux kernel, the following vulnerability has been resolved:

    net: hso: fix null-ptr-deref during tty device unregistration

    Multiple ttys try to claim the same the minor number causing a doubleunregistration of the same device.
    The first unregistration succeedsbut the next one results in a null-ptr-deref.

    The get_free_serial_index() function returns an available minor numberbut doesn't assign it immediately.
    The assignment is done by the callerlater. But before this assignment, calls to     get_free_serial_index()would return the same minor number.

    Fix this by modifying get_free_serial_index to assign the minor numberimmediately after one is found to be     and rename it to obtain_minor()to better reflect what it does. Similary, rename set_serial_by_index()to     release_minor() and modify it to free up the minor number of thegiven hso_serial. Every obtain_minor()     should have correspondingrelease_minor() call. (CVE-2021-46904)

    In the Linux kernel, the following vulnerability has been resolved:

    net: hso: fix NULL-deref on disconnect regression

    Commit 8a12f8836145 (net: hso: fix null-ptr-deref during tty deviceunregistration) fixed the racy minor     allocation reported by syzbot, butintroduced an unconditional NULL-pointer dereference on every     disconnectinstead.

    Specifically, the serial device table must no longer be accessed afterthe minor has been released by     hso_serial_tty_unregister(). (CVE-2021-46905)

    In the Linux kernel, the following vulnerability has been resolved:

    ARM: footbridge: fix PCI interrupt mapping (CVE-2021-46909)

    In the Linux kernel, the following vulnerability has been resolved:

    netfilter: nft_limit: avoid possible divide error in nft_limit_init

    div_u64() divides u64 by u32.

    nft_limit_init() wants to divide u64 by u64, use the appropriatemath function (div64_u64)

    divide error: 0000 [#1] PREEMPT SMP KASANCPU: 1 PID: 8390 Comm: syz-executor188 Not tainted     5.12.0-rc4-syzkaller #0Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google     01/01/2011RIP: 0010:div_u64_rem include/linux/math64.h:28 [inline]RIP: 0010:div_u64     include/linux/math64.h:127 [inline]RIP: 0010:nft_limit_init+0x2a2/0x5e0 net/netfilter/nft_limit.c:85Code:
    ef 4c 01 eb 41 0f 92 c7 48 89 de e8 38 a5 22 fa 4d 85 ff 0f 85 97 02 00 00 e8 ea 9e 22 fa 4c 0f af f3 45     89 ed 31 d2 4c 89 f0 <49> f7 f5 49 89 c6 e8 d3 9e 22 fa 48 8d 7d 48 48 b8 00 00 00 00 00RSP:
    0018:ffffc90009447198 EFLAGS: 00010246RAX: 0000000000000000 RBX: 0000200000000000 RCX:
    0000000000000000RDX: 0000000000000000 RSI: ffffffff875152e6 RDI: 0000000000000003RBP: ffff888020f80908     R08: 0000200000000000 R09: 0000000000000000R10: ffffffff875152d8 R11: 0000000000000000 R12:
    ffffc90009447270R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000FS:
    000000000097a300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000CS:  0010 DS: 0000 ES: 0000 CR0:
    0000000080050033CR2: 00000000200001c4 CR3: 0000000026a52000 CR4: 00000000001506e0DR0: 0000000000000000     DR1: 0000000000000000 DR2: 0000000000000000DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
    0000000000000400Call Trace:nf_tables_newexpr net/netfilter/nf_tables_api.c:2675     [inline]nft_expr_init+0x145/0x2d0 net/netfilter/nf_tables_api.c:2713nft_set_elem_expr_alloc+0x27/0x280     net/netfilter/nf_tables_api.c:5160nf_tables_newset+0x1997/0x3150     net/netfilter/nf_tables_api.c:4321nfnetlink_rcv_batch+0x85a/0x21b0     net/netfilter/nfnetlink.c:456nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:580     [inline]nfnetlink_rcv+0x3af/0x420 net/netfilter/nfnetlink.c:598netlink_unicast_kernel     net/netlink/af_netlink.c:1312 [inline]netlink_unicast+0x533/0x7d0     net/netlink/af_netlink.c:1338netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1927sock_sendmsg_nosec     net/socket.c:654 [inline]sock_sendmsg+0xcf/0x120 net/socket.c:674____sys_sendmsg+0x6e8/0x810     net/socket.c:2350___sys_sendmsg+0xf3/0x170 net/socket.c:2404__sys_sendmsg+0xe5/0x1b0     net/socket.c:2433do_syscall_64+0x2d/0x70     arch/x86/entry/common.c:46entry_SYSCALL_64_after_hwframe+0x44/0xae (CVE-2021-46915)

    In the Linux kernel, the following vulnerability has been resolved:

    bpf: Fix masking negation logic upon negative dst register (CVE-2021-46974)

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.

ID	Name	Product	Family	Severity
202959	EulerOS 2.0 SP8 : kernel (EulerOS-SA-2024-2038)	Nessus	Huawei Local Security Checks	high
202681	EulerOS Virtualization 2.10.0 : kernel (EulerOS-SA-2024-1984)	Nessus	Huawei Local Security Checks	high
202654	EulerOS Virtualization 2.10.1 : kernel (EulerOS-SA-2024-2002)	Nessus	Huawei Local Security Checks	high
198237	SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2024:1870-1)	Nessus	SuSE Local Security Checks	high
197057	SUSE SLES12 Security Update : kernel (SUSE-SU-2024:1646-1)	Nessus	SuSE Local Security Checks	high
197055	SUSE SLES12 Security Update : kernel (SUSE-SU-2024:1643-1)	Nessus	SuSE Local Security Checks	high
197048	SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2024:1648-1)	Nessus	SuSE Local Security Checks	high
195280	EulerOS 2.0 SP10 : kernel (EulerOS-SA-2024-1570)	Nessus	Huawei Local Security Checks	high
195267	EulerOS 2.0 SP10 : kernel (EulerOS-SA-2024-1592)	Nessus	Huawei Local Security Checks	high
192487	SUSE SLES15 Security Update : kernel (SUSE-SU-2024:0926-1)	Nessus	SuSE Local Security Checks	high
192014	SUSE SLES15 Security Update : kernel (SUSE-SU-2024:0857-1)	Nessus	SuSE Local Security Checks	high
160443	Amazon Linux 2 : kernel (ALASKERNEL-5.10-2022-001)	Nessus	Amazon Linux Local Security Checks	high
160442	Amazon Linux 2 : kernel (ALASKERNEL-5.4-2022-003)	Nessus	Amazon Linux Local Security Checks	high
149870	Amazon Linux 2 : kernel (ALAS-2021-1636)	Nessus	Amazon Linux Local Security Checks	high

Detections

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CVE-2021-46905

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Tenable Plugins

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