In the Linux kernel, the following vulnerability has been resolved: io_uring: Fix a null-ptr-deref in io_tctx_exit_cb() Syzkaller reports a NULL deref bug as follows: BUG: KASAN: null-ptr-deref in io_tctx_exit_cb+0x53/0xd3 Read of size 4 at addr 0000000000000138 by task file1/1955 CPU: 1 PID: 1955 Comm: file1 Not tainted 6.1.0-rc7-00103-gef4d3ea40565 #75 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.11.0-2.el7 04/01/2014 Call Trace: <TASK> dump_stack_lvl+0xcd/0x134 ? io_tctx_exit_cb+0x53/0xd3 kasan_report+0xbb/0x1f0 ? io_tctx_exit_cb+0x53/0xd3 kasan_check_range+0x140/0x190 io_tctx_exit_cb+0x53/0xd3 task_work_run+0x164/0x250 ? task_work_cancel+0x30/0x30 get_signal+0x1c3/0x2440 ? lock_downgrade+0x6e0/0x6e0 ? lock_downgrade+0x6e0/0x6e0 ? exit_signals+0x8b0/0x8b0 ? do_raw_read_unlock+0x3b/0x70 ? do_raw_spin_unlock+0x50/0x230 arch_do_signal_or_restart+0x82/0x2470 ? kmem_cache_free+0x260/0x4b0 ? putname+0xfe/0x140 ? get_sigframe_size+0x10/0x10 ? do_execveat_common.isra.0+0x226/0x710 ? lockdep_hardirqs_on+0x79/0x100 ? putname+0xfe/0x140 ? do_execveat_common.isra.0+0x238/0x710 exit_to_user_mode_prepare+0x15f/0x250 syscall_exit_to_user_mode+0x19/0x50 do_syscall_64+0x42/0xb0 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0023:0x0 Code: Unable to access opcode bytes at 0xffffffffffffffd6. RSP: 002b:00000000fffb7790 EFLAGS: 00000200 ORIG_RAX: 000000000000000b RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 </TASK> Kernel panic - not syncing: panic_on_warn set ... This happens because the adding of task_work from io_ring_exit_work() isn't synchronized with canceling all work items from eg exec. The execution of the two are ordered in that they are both run by the task itself, but if io_tctx_exit_cb() is queued while we're canceling all work items off exec AND gets executed when the task exits to userspace rather than in the main loop in io_uring_cancel_generic(), then we can find current->io_uring == NULL and hit the above crash. It's safe to add this NULL check here, because the execution of the two paths are done by the task itself. [axboe: add code comment and also put an explanation in the commit msg]

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - In the Linux kernel, the following vulnerability has been resolved: io_uring: Fix a null-ptr-deref in     io_tctx_exit_cb() Syzkaller reports a NULL deref bug as follows: BUG: KASAN: null-ptr-deref in     io_tctx_exit_cb+0x53/0xd3 Read of size 4 at addr 0000000000000138 by task file1/1955 CPU: 1 PID: 1955     Comm: file1 Not tainted 6.1.0-rc7-00103-gef4d3ea40565 #75 Hardware name: QEMU Standard PC (i440FX + PIIX,     1996), BIOS 1.11.0-2.el7 04/01/2014 Call Trace: <TASK> dump_stack_lvl+0xcd/0x134 ?     io_tctx_exit_cb+0x53/0xd3 kasan_report+0xbb/0x1f0 ? io_tctx_exit_cb+0x53/0xd3     kasan_check_range+0x140/0x190 io_tctx_exit_cb+0x53/0xd3 task_work_run+0x164/0x250 ?     task_work_cancel+0x30/0x30 get_signal+0x1c3/0x2440 ? lock_downgrade+0x6e0/0x6e0 ?     lock_downgrade+0x6e0/0x6e0 ? exit_signals+0x8b0/0x8b0 ? do_raw_read_unlock+0x3b/0x70 ?     do_raw_spin_unlock+0x50/0x230 arch_do_signal_or_restart+0x82/0x2470 ? kmem_cache_free+0x260/0x4b0 ?     putname+0xfe/0x140 ? get_sigframe_size+0x10/0x10 ? do_execveat_common.isra.0+0x226/0x710 ?     lockdep_hardirqs_on+0x79/0x100 ? putname+0xfe/0x140 ? do_execveat_common.isra.0+0x238/0x710     exit_to_user_mode_prepare+0x15f/0x250 syscall_exit_to_user_mode+0x19/0x50 do_syscall_64+0x42/0xb0     entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0023:0x0 Code: Unable to access opcode bytes at     0xffffffffffffffd6. RSP: 002b:00000000fffb7790 EFLAGS: 00000200 ORIG_RAX: 000000000000000b RAX:
    0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000     RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10:
    0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000     R15: 0000000000000000 </TASK> Kernel panic - not syncing: panic_on_warn set ... This happens because the     adding of task_work from io_ring_exit_work() isn't synchronized with canceling all work items from eg     exec. The execution of the two are ordered in that they are both run by the task itself, but if     io_tctx_exit_cb() is queued while we're canceling all work items off exec AND gets executed when the task     exits to userspace rather than in the main loop in io_uring_cancel_generic(), then we can find     current->io_uring == NULL and hit the above crash. It's safe to add this NULL check here, because the     execution of the two paths are done by the task itself. [axboe: add code comment and also put an     explanation in the commit msg] (CVE-2022-48983)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote SUSE Linux SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2024:4376-1 advisory.

    The SUSE Linux Enterprise 15 SP5 Azure kernel was updated to receive various security bugfixes.

    The following security bugs were fixed:

    - CVE-2021-47594: mptcp: never allow the PM to close a listener subflow (bsc#1226560).
    - CVE-2022-48983: io_uring: Fix a null-ptr-deref in io_tctx_exit_cb() (bsc#1231959).
    - CVE-2024-26782: mptcp: fix double-free on socket dismantle (bsc#1222590).
    - CVE-2024-26906: Fixed invalid vsyscall page read for copy_from_kernel_nofault() (bsc#1223202).
    - CVE-2024-26953: net: esp: fix bad handling of pages from page_pool (bsc#1223656).
    - CVE-2024-35888: erspan: make sure erspan_base_hdr is present in skb->head (bsc#1224518).
    - CVE-2024-35937: wifi: cfg80211: check A-MSDU format more carefully (bsc#1224526).
    - CVE-2024-36883: net: fix out-of-bounds access in ops_init (bsc#1225725).
    - CVE-2024-36886: tipc: fix UAF in error path (bsc#1225730).
    - CVE-2024-36905: tcp: defer shutdown(SEND_SHUTDOWN) for TCP_SYN_RECV sockets (bsc#1225742).
    - CVE-2024-36954: tipc: fix a possible memleak in tipc_buf_append (bsc#1225764).
    - CVE-2024-38589: netrom: fix possible dead-lock in nr_rt_ioctl() (bsc#1226748).
    - CVE-2024-38615: cpufreq: exit() callback is optional (bsc#1226592).
    - CVE-2024-40997: cpufreq: amd-pstate: fix memory leak on CPU EPP exit (bsc#1227853).
    - CVE-2024-41023: sched/deadline: Fix task_struct reference leak (bsc#1228430).
    - CVE-2024-44932: idpf: fix UAFs when destroying the queues (bsc#1229808).
    - CVE-2024-44964: idpf: fix memory leaks and crashes while performing a soft reset (bsc#1230220).
    - CVE-2024-44995: net: hns3: fix a deadlock problem when config TC during resetting (bsc#1230231).
    - CVE-2024-46681: pktgen: use cpus_read_lock() in pg_net_init() (bsc#1230558).
    - CVE-2024-46800: sch/netem: fix use after free in netem_dequeue (bsc#1230827).
    - CVE-2024-47679: vfs: fix race between evice_inodes() and find_inode()&iput() (bsc#1231930).
    - CVE-2024-47701: ext4: explicitly exit when ext4_find_inline_entry returns an error (bsc#1231920).
    - CVE-2024-47745: mm: split critical region in remap_file_pages() and invoke LSMs in between     (bsc#1232135).
    - CVE-2024-47757: nilfs2: fix potential oob read in nilfs_btree_check_delete() (bsc#1232187).
    - CVE-2024-49868: btrfs: fix a NULL pointer dereference when failed to start a new trasacntion     (bsc#1232272).
    - CVE-2024-49921: drm/amd/display: Check null pointers before used (bsc#1232371).
    - CVE-2024-49925: fbdev: efifb: Register sysfs groups through driver core (bsc#1232224)
    - CVE-2024-49934: fs/inode: Prevent dump_mapping() accessing invalid dentry.d_name.name (bsc#1232387).
    - CVE-2024-49945: net/ncsi: Disable the ncsi work before freeing the associated structure (bsc#1232165).
    - CVE-2024-49950: Bluetooth: L2CAP: Fix uaf in l2cap_connect (bsc#1232159).
    - CVE-2024-49968: ext4: fix error message when rejecting the default hash (bsc#1232264).
    - CVE-2024-49983: ext4: drop ppath from ext4_ext_replay_update_ex() to avoid double-free (bsc#1232096).
    - CVE-2024-49989: drm/amd/display: fix double free issue during amdgpu module unload (bsc#1232483).
    - CVE-2024-50009: cpufreq: amd-pstate: add check for cpufreq_cpu_get's return value (bsc#1232318).
    - CVE-2024-50073: tty: n_gsm: Fix use-after-free in gsm_cleanup_mux (bsc#1232520).
    - CVE-2024-50082: blk-rq-qos: fix crash on rq_qos_wait vs. rq_qos_wake_function race (bsc#1232500).
    - CVE-2024-50089: unicode: Do not special case ignorable code points (bsc#1232860).
    - CVE-2024-50093: thermal: intel: int340x: processor: Fix warning during module unload (bsc#1232877).
    - CVE-2024-50098: scsi: ufs: core: Set SDEV_OFFLINE when UFS is shut down (bsc#1232881).
    - CVE-2024-50108: drm/amd/display: Disable PSR-SU on Parade 08-01 TCON too (bsc#1232884).
    - CVE-2024-50110: xfrm: fix one more kernel-infoleak in algo dumping (bsc#1232885).
    - CVE-2024-50115: KVM: nSVM: Ignore nCR3[4:0] when loading PDPTEs from memory (bsc#1232919).
    - CVE-2024-50125: Bluetooth: SCO: Fix UAF on sco_sock_timeout (bsc#1232928).
    - CVE-2024-50127: net: sched: fix use-after-free in taprio_change() (bsc#1232907).
    - CVE-2024-50128: net: wwan: fix global oob in wwan_rtnl_policy (bsc#1232905).
    - CVE-2024-50134: drm/vboxvideo: Replace fake VLA at end of vbva_mouse_pointer_shape (bsc#1232890).
    - CVE-2024-50135: nvme-pci: fix race condition between reset and nvme_dev_disable() (bsc#1232888).
    - CVE-2024-50138: bpf: Use raw_spinlock_t in ringbuf (bsc#1232935).
    - CVE-2024-50146: net/mlx5e: Do not call cleanup on profile rollback failure (bsc#1233056).
    - CVE-2024-50147: net/mlx5: Fix command bitmask initialization (bsc#1233067).
    - CVE-2024-50153: scsi: target: core: Fix null-ptr-deref in target_alloc_device() (bsc#1233061).
    - CVE-2024-50154: tcp: Fix use-after-free of nreq in reqsk_timer_handler() (bsc#1233070).
    - CVE-2024-50167: be2net: fix potential memory leak in be_xmit() (bsc#1233049).
    - CVE-2024-50171: net: systemport: fix potential memory leak in bcm_sysport_xmit() (bsc#1233057).
    - CVE-2024-50182: secretmem: disable memfd_secret() if arch cannot set direct map (bsc#1233129).
    - CVE-2024-50184: virtio_pmem: Check device status before requesting flush (bsc#1233135).
    - CVE-2024-50186: net: explicitly clear the sk pointer, when pf->create fails (bsc#1233110).
    - CVE-2024-50188: net: phy: dp83869: fix memory corruption when enabling fiber (bsc#1233107).
    - CVE-2024-50192: irqchip/gic-v4: Correctly deal with set_affinity on lazily-mapped VPEs (bsc#1233106).
    - CVE-2024-50195: posix-clock: posix-clock: Fix unbalanced locking in pc_clock_settime() (bsc#1233103).
    - CVE-2024-50196: pinctrl: ocelot: fix system hang on level based interrupts (bsc#1233113).
    - CVE-2024-50205: ALSA: firewire-lib: Avoid division by zero in apply_constraint_to_size() (bsc#1233293).
    - CVE-2024-50208: RDMA/bnxt_re: Fix a bug while setting up Level-2 PBL pages (bsc#1233117).
    - CVE-2024-50229: nilfs2: fix potential deadlock with newly created symlinks (bsc#1233205).
    - CVE-2024-50230: nilfs2: fix kernel bug due to missing clearing of checked flag (bsc#1233206).
    - CVE-2024-50259: netdevsim: Add trailing zero to terminate the string in     nsim_nexthop_bucket_activity_write() (bsc#1233214).
    - CVE-2024-50261: macsec: Fix use-after-free while sending the offloading packet (bsc#1233253).
    - CVE-2024-50264: vsock/virtio: Initialization of the dangling pointer occurring in vsk->trans     (bsc#1233453).
    - CVE-2024-50267: USB: serial: io_edgeport: fix use after free in debug printk (bsc#1233456).
    - CVE-2024-50271: signal: restore the override_rlimit logic (bsc#1233460).
    - CVE-2024-50273: btrfs: reinitialize delayed ref list after deleting it from the list (bsc#1233462).
    - CVE-2024-50274: idpf: avoid vport access in idpf_get_link_ksettings (bsc#1233463).
    - CVE-2024-50279: dm cache: fix out-of-bounds access to the dirty bitset when resizing (bsc#1233468).
    - CVE-2024-50289: media: av7110: fix a spectre vulnerability (bsc#1233478).
    - CVE-2024-50295: net: arc: fix the device for dma_map_single/dma_unmap_single (bsc#1233484).
    - CVE-2024-50298: net: enetc: allocate vf_state during PF probes (bsc#1233487).
    - CVE-2024-53052: io_uring/rw: fix missing NOWAIT check for O_DIRECT start write (bsc#1233548).
    - CVE-2024-53058: net: stmmac: TSO: Fix unbalanced DMA map/unmap for non-paged SKB data (bsc#1233552).
    - CVE-2024-53061: media: s5p-jpeg: prevent buffer overflows (bsc#1233555).
    - CVE-2024-53063: media: dvbdev: prevent the risk of out of memory access (bsc#1233557).
    - CVE-2024-53068: firmware: arm_scmi: Fix slab-use-after-free in scmi_bus_notifier() (bsc#1233561).
    - CVE-2024-53079: mm/thp: fix deferred split unqueue naming and locking (bsc#1233570).
    - CVE-2024-53088: i40e: fix race condition by adding filter's intermediate sync state (bsc#1233580).
    - CVE-2024-53104: media: uvcvideo: Skip parsing frames of type UVC_VS_UNDEFINED in uvc_parse_format     (bsc#1234025).
    - CVE-2024-53110: vp_vdpa: fix id_table array not null terminated error (bsc#1234085).


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 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2024:4315-1 advisory.

    The SUSE Linux Enterprise 15 SP5 RT kernel was updated to receive various security bugfixes.

    The following security bugs were fixed:

    - CVE-2021-47594: mptcp: never allow the PM to close a listener subflow (bsc#1226560).
    - CVE-2022-48983: io_uring: Fix a null-ptr-deref in io_tctx_exit_cb() (bsc#1231959).
    - CVE-2024-26782: mptcp: fix double-free on socket dismantle (bsc#1222590).
    - CVE-2024-26906: Fixed invalid vsyscall page read for copy_from_kernel_nofault() (bsc#1223202).
    - CVE-2024-26953: net: esp: fix bad handling of pages from page_pool (bsc#1223656).
    - CVE-2024-35888: erspan: make sure erspan_base_hdr is present in skb->head (bsc#1224518).
    - CVE-2024-35937: wifi: cfg80211: check A-MSDU format more carefully (bsc#1224526).
    - CVE-2024-36883: net: fix out-of-bounds access in ops_init (bsc#1225725).
    - CVE-2024-36886: tipc: fix UAF in error path (bsc#1225730).
    - CVE-2024-36905: tcp: defer shutdown(SEND_SHUTDOWN) for TCP_SYN_RECV sockets (bsc#1225742).
    - CVE-2024-36954: tipc: fix a possible memleak in tipc_buf_append (bsc#1225764).
    - CVE-2024-38589: netrom: fix possible dead-lock in nr_rt_ioctl() (bsc#1226748).
    - CVE-2024-38615: cpufreq: exit() callback is optional (bsc#1226592).
    - CVE-2024-40997: cpufreq: amd-pstate: fix memory leak on CPU EPP exit (bsc#1227853).
    - CVE-2024-41023: sched/deadline: Fix task_struct reference leak (bsc#1228430).
    - CVE-2024-44932: idpf: fix UAFs when destroying the queues (bsc#1229808).
    - CVE-2024-44964: idpf: fix memory leaks and crashes while performing a soft reset (bsc#1230220).
    - CVE-2024-44995: net: hns3: fix a deadlock problem when config TC during resetting (bsc#1230231).
    - CVE-2024-46681: pktgen: use cpus_read_lock() in pg_net_init() (bsc#1230558).
    - CVE-2024-46800: sch/netem: fix use after free in netem_dequeue (bsc#1230827).
    - CVE-2024-47679: vfs: fix race between evice_inodes() and find_inode()&iput() (bsc#1231930).
    - CVE-2024-47701: ext4: avoid OOB when system.data xattr changes underneath the filesystem (bsc#1231920).
    - CVE-2024-47745: mm: call the security_mmap_file() LSM hook in remap_file_pages() (bsc#1232135).
    - CVE-2024-47757: nilfs2: fix potential oob read in nilfs_btree_check_delete() (bsc#1232187).
    - CVE-2024-49868: btrfs: fix a NULL pointer dereference when failed to start a new trasacntion     (bsc#1232272).
    - CVE-2024-49921: drm/amd/display: Check null pointers before used (bsc#1232371).
    - CVE-2024-49925: fbdev: efifb: Register sysfs groups through driver core (bsc#1232224)
    - CVE-2024-49934: fs/inode: Prevent dump_mapping() accessing invalid dentry.d_name.name (bsc#1232387).
    - CVE-2024-49945: net/ncsi: Disable the ncsi work before freeing the associated structure (bsc#1232165).
    - CVE-2024-49950: Bluetooth: L2CAP: Fix uaf in l2cap_connect (bsc#1232159).
    - CVE-2024-49968: ext4: filesystems without casefold feature cannot be mounted with siphash (bsc#1232264).
    - CVE-2024-49983: ext4: drop ppath from ext4_ext_replay_update_ex() to avoid double-free (bsc#1232096).
    - CVE-2024-49989: drm/amd/display: fix double free issue during amdgpu module unload (bsc#1232483).
    - CVE-2024-50009: cpufreq: amd-pstate: add check for cpufreq_cpu_get's return value (bsc#1232318).
    - CVE-2024-50073: tty: n_gsm: Fix use-after-free in gsm_cleanup_mux (bsc#1232520).
    - CVE-2024-50082: blk-rq-qos: fix crash on rq_qos_wait vs. rq_qos_wake_function race (bsc#1232500).
    - CVE-2024-50089: unicode: Do not special case ignorable code points (bsc#1232860).
    - CVE-2024-50093: thermal: intel: int340x: processor: Fix warning during module unload (bsc#1232877).
    - CVE-2024-50098: scsi: ufs: core: Set SDEV_OFFLINE when UFS is shut down (bsc#1232881).
    - CVE-2024-50108: drm/amd/display: Disable PSR-SU on Parade 08-01 TCON too (bsc#1232884).
    - CVE-2024-50110: xfrm: fix one more kernel-infoleak in algo dumping (bsc#1232885).
    - CVE-2024-50115: KVM: nSVM: Ignore nCR3[4:0] when loading PDPTEs from memory (bsc#1232919).
    - CVE-2024-50125: Bluetooth: SCO: Fix UAF on sco_sock_timeout (bsc#1232928).
    - CVE-2024-50127: net: sched: fix use-after-free in taprio_change() (bsc#1232907).
    - CVE-2024-50128: net: wwan: fix global oob in wwan_rtnl_policy (bsc#1232905).
    - CVE-2024-50134: drm/vboxvideo: Replace fake VLA at end of vbva_mouse_pointer_shape (bsc#1232890).
    - CVE-2024-50135: nvme-pci: fix race condition between reset and nvme_dev_disable() (bsc#1232888).
    - CVE-2024-50138: bpf: Use raw_spinlock_t in ringbuf (bsc#1232935).
    - CVE-2024-50146: net/mlx5e: Do not call cleanup on profile rollback failure (bsc#1233056).
    - CVE-2024-50147: net/mlx5: Fix command bitmask initialization (bsc#1233067).
    - CVE-2024-50153: scsi: target: core: Fix null-ptr-deref in target_alloc_device() (bsc#1233061).
    - CVE-2024-50154: tcp/dccp: Do not use timer_pending() in reqsk_queue_unlink() (bsc#1233070).
    - CVE-2024-50167: be2net: fix potential memory leak in be_xmit() (bsc#1233049).
    - CVE-2024-50171: net: systemport: fix potential memory leak in bcm_sysport_xmit() (bsc#1233057).
    - CVE-2024-50182: secretmem: disable memfd_secret() if arch cannot set direct map (bsc#1233129).
    - CVE-2024-50184: virtio_pmem: Check device status before requesting flush (bsc#1233135).
    - CVE-2024-50186: net: explicitly clear the sk pointer, when pf->create fails (bsc#1233110).
    - CVE-2024-50188: net: phy: dp83869: fix memory corruption when enabling fiber (bsc#1233107).
    - CVE-2024-50192: irqchip/gic-v4: Do not allow a VMOVP on a dying VPE (bsc#1233106).
    - CVE-2024-50195: posix-clock: Fix missing timespec64 check in pc_clock_settime() (bsc#1233103).
    - CVE-2024-50196: pinctrl: ocelot: fix system hang on level based interrupts (bsc#1233113).
    - CVE-2024-50205: ALSA: firewire-lib: Avoid division by zero in apply_constraint_to_size() (bsc#1233293).
    - CVE-2024-50208: RDMA/bnxt_re: Fix a bug while setting up Level-2 PBL pages (bsc#1233117).
    - CVE-2024-50229: nilfs2: fix potential deadlock with newly created symlinks (bsc#1233205).
    - CVE-2024-50230: nilfs2: fix kernel bug due to missing clearing of checked flag (bsc#1233206).
    - CVE-2024-50259: netdevsim: Add trailing zero to terminate the string in     nsim_nexthop_bucket_activity_write() (bsc#1233214).
    - CVE-2024-50261: macsec: Fix use-after-free while sending the offloading packet (bsc#1233253).
    - CVE-2024-50264: vsock/virtio: Initialization of the dangling pointer occurring in vsk->trans     (bsc#1233453).
    - CVE-2024-50267: usb: serial: io_edgeport: fix use after free in debug printk (bsc#1233456).
    - CVE-2024-50271: signal: restore the override_rlimit logic (bsc#1233460).
    - CVE-2024-50273: btrfs: reinitialize delayed ref list after deleting it from the list (bsc#1233462).
    - CVE-2024-50274: idpf: avoid vport access in idpf_get_link_ksettings (bsc#1233463).
    - CVE-2024-50279: dm cache: fix out-of-bounds access to the dirty bitset when resizing (bsc#1233468).
    - CVE-2024-50289: media: av7110: fix a spectre vulnerability (bsc#1233478).
    - CVE-2024-50295: net: arc: fix the device for dma_map_single/dma_unmap_single (bsc#1233484).
    - CVE-2024-50298: net: enetc: allocate vf_state during PF probes (bsc#1233487).
    - CVE-2024-53052: io_uring/rw: fix missing NOWAIT check for O_DIRECT start write (bsc#1233548).
    - CVE-2024-53058: net: stmmac: TSO: Fix unbalanced DMA map/unmap for non-paged SKB data (bsc#1233552).
    - CVE-2024-53061: media: s5p-jpeg: prevent buffer overflows (bsc#1233555).
    - CVE-2024-53063: media: dvbdev: prevent the risk of out of memory access (bsc#1233557).
    - CVE-2024-53068: firmware: arm_scmi: Fix slab-use-after-free in scmi_bus_notifier() (bsc#1233561).
    - CVE-2024-53079: mm/thp: fix deferred split unqueue naming and locking (bsc#1233570).
    - CVE-2024-53088: i40e: fix race condition by adding filter's intermediate sync state (bsc#1233580).
    - CVE-2024-53104: media: uvcvideo: Skip parsing frames of type UVC_VS_UNDEFINED in uvc_parse_format     (bsc#1234025).
    - CVE-2024-53110: vp_vdpa: fix id_table array not null terminated error (bsc#1234085).


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 5.15.86-53.137. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.15-2023-012 advisory.

    A flaw was found in the Linux kernel. A denial of service flaw may occur if there is a consecutive request     of the NVME_IOCTL_RESET and the NVME_IOCTL_SUBSYS_RESET through the device file of the driver, resulting     in a PCIe link disconnect. (CVE-2022-3169)

    A vulnerability classified as critical has been found in Linux Kernel. Affected is the function     btf_dump_name_dups of the file tools/lib/bpf/btf_dump.c of the component libbpf. The manipulation leads to     use after free. It is recommended to apply a patch to fix this issue. The identifier of this vulnerability     is VDB-211032. (CVE-2022-3534)

    Guests can trigger NIC interface reset/abort/crash via netback It is possible for a guest to trigger a NIC     interface reset/abort/crash in a Linux based network backend by sending certain kinds of packets. It     appears to be an (unwritten?) assumption in the rest of the Linux network stack that packet protocol     headers are all contained within the linear section of the SKB and some NICs behave badly if this is not     the case. This has been reported to occur with Cisco (enic) and Broadcom NetXtrem II BCM5780 (bnx2x)     though it may be an issue with other NICs/drivers as well. In case the frontend is sending requests with     split headers, netback will forward those violating above mentioned assumption to the networking core,     resulting in said misbehavior. (CVE-2022-3643)

    An incorrect TLB flush issue was found in the Linux kernel's GPU i915 kernel driver, potentially leading     to random memory corruption or data leaks. This flaw could allow a local user to crash the system or     escalate their privileges on the system. (CVE-2022-4139)

    Guests can trigger deadlock in Linux netback driver T[his CNA information record relates to multiple CVEs;
    the text explains which aspects/vulnerabilities correspond to which CVE.] The patch for XSA-392 introduced     another issue which might result in a deadlock when trying to free the SKB of a packet dropped due to the     XSA-392 handling (CVE-2022-42328). Additionally when dropping packages for other reasons the same deadlock     could occur in case of netpoll being active for the interface the xen-netback driver is connected to     (CVE-2022-42329). (CVE-2022-42328)

    Guests can trigger deadlock in Linux netback driver T[his CNA information record relates to multiple CVEs;
    the text explains which aspects/vulnerabilities correspond to which CVE.] The patch for XSA-392 introduced     another issue which might result in a deadlock when trying to free the SKB of a packet dropped due to the     XSA-392 handling (CVE-2022-42328). Additionally when dropping packages for other reasons the same deadlock     could occur in case of netpoll being active for the interface the xen-netback driver is connected to     (CVE-2022-42329). (CVE-2022-42329)

    A stack overflow flaw was found in the Linux kernel's SYSCTL subsystem in how a user changes certain     kernel parameters and variables. This flaw allows a local user to crash or potentially escalate their     privileges on the system. (CVE-2022-4378)

    A use-after-free vulnerability was found in __nfs42_ssc_open() in fs/nfs/nfs4file.c in the Linux kernel.
    This flaw allows an attacker to conduct a remote denial of service. (CVE-2022-4379)

    A race condition in the x86 KVM subsystem in the Linux kernel through 6.1-rc6 allows guest OS users to     cause a denial of service (host OS crash or host OS memory corruption) when nested virtualisation and the     TDP MMU are enabled. (CVE-2022-45869)

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

    udf: Fix preallocation discarding at indirect extent boundary (CVE-2022-48946)

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

    igb: Initialize mailbox message for VF reset (CVE-2022-48949)

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

    perf: Fix perf_pending_task() UaF (CVE-2022-48950)

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

    rtc: cmos: Fix event handler registration ordering issue (CVE-2022-48953)

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

    ipv6: avoid use-after-free in ip6_fragment() (CVE-2022-48956)

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

    net: mdio: fix unbalanced fwnode reference count in mdio_device_release() (CVE-2022-48961)

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

    xen-netfront: Fix NULL sring after live migration (CVE-2022-48969)

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

    af_unix: Get user_ns from in_skb in unix_diag_get_exact(). (CVE-2022-48970)

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

    mac802154: fix missing INIT_LIST_HEAD in ieee802154_if_add() (CVE-2022-48972)

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

    gpiolib: fix memory leak in gpiochip_setup_dev() (CVE-2022-48975)

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

    can: af_can: fix NULL pointer dereference in can_rcv_filter (CVE-2022-48977)

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

    HID: core: fix shift-out-of-bounds in hid_report_raw_event (CVE-2022-48978)

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

    io_uring: Fix a null-ptr-deref in io_tctx_exit_cb() (CVE-2022-48983)

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

    mm/gup: fix gup_pud_range() for dax (CVE-2022-48986)

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

    memcg: fix possible use-after-free in memcg_write_event_control() (CVE-2022-48988)

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

    mm/khugepaged: invoke MMU notifiers in shmem/file collapse paths (CVE-2022-48991)

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

    char: tpm: Protect tpm_pm_suspend with locks (CVE-2022-48997)

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

    ipv4: Handle attempt to delete multipath route when fib_info contains an nh reference (CVE-2022-48999)

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

    iommu/vt-d: Fix PCI device refcount leak in has_external_pci() (CVE-2022-49000)

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

    iommu/vt-d: Fix PCI device refcount leak in dmar_dev_scope_init() (CVE-2022-49002)

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

    nvme: fix SRCU protection of nvme_ns_head list (CVE-2022-49003)

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

    riscv: Sync efi page table's kernel mappings before switching (CVE-2022-49004)

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

    tracing: Free buffers when a used dynamic event is removed (CVE-2022-49006)

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

    sctp: fix memory leak in sctp_stream_outq_migrate() (CVE-2022-49013)

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

    net: tun: Fix use-after-free in tun_detach() (CVE-2022-49014)

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

    net: hsr: Fix potential use-after-free (CVE-2022-49015)

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

    net: mdiobus: fix unbalanced node reference count (CVE-2022-49016)

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

    net: phy: fix null-ptr-deref while probe() failed (CVE-2022-49021)

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

    ixgbevf: Fix resource leak in ixgbevf_init_module() (CVE-2022-49028)

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

    libbpf: Handle size overflow for ringbuf mmap (CVE-2022-49030)

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

    btrfs: qgroup: fix sleep from invalid context bug in btrfs_qgroup_inherit() (CVE-2022-49033)

    A use-after-free flaw was found in reconn_set_ipaddr_from_hostname in fs/cifs/connect.c in the Linux     kernel. (CVE-2023-1195)

    In the Linux kernel 6.0.8, there is a use-after-free in ntfs_trim_fs in fs/ntfs3/bitmap.c.
    (CVE-2023-26606)

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
225429	Linux Distros Unpatched Vulnerability : CVE-2022-48983	Nessus	Misc.	medium
213242	SUSE SLES15 / openSUSE 15 Security Update : kernel (SUSE-SU-2024:4376-1)	Nessus	SuSE Local Security Checks	high
213129	SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2024:4364-1)	Nessus	SuSE Local Security Checks	critical
213014	SUSE SLES15 / openSUSE 15 Security Update : kernel (SUSE-SU-2024:4315-1)	Nessus	SuSE Local Security Checks	high
170458	Amazon Linux 2 : kernel (ALASKERNEL-5.15-2023-012)	Nessus	Amazon Linux Local Security Checks	high

Detections

Analytics

CVE-2022-48983

medium

Tenable Plugins

medium

high

critical

high

high