In the Linux kernel, the following vulnerability has been resolved: mptcp: fix race on unaccepted mptcp sockets When the listener socket owning the relevant request is closed, it frees the unaccepted subflows and that causes later deletion of the paired MPTCP sockets. The mptcp socket's worker can run in the time interval between such delete operations. When that happens, any access to msk->first will cause an UaF access, as the subflow cleanup did not cleared such field in the mptcp socket. Address the issue explicitly traversing the listener socket accept queue at close time and performing the needed cleanup on the pending msk. Note that the locking is a bit tricky, as we need to acquire the msk socket lock, while still owning the subflow socket one.

The AlmaLinux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1778769697 advisory.

  - In the Linux kernel, the following vulnerability has been resolved: xprtrdma: treat all calls not a bcall     when bc_serv is NULL When a rdma server returns a fault format reply, nfs v3 client may treats it as a     bcall when bc service is not exist. The debug message at rpcrdma_bc_receive_call are, [56579.837169] RPC:
    rpcrdma_bc_receive_call: callback XID 00000001, length=20 [56579.837174] RPC: rpcrdma_bc_receive_call: 00     00 00 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 04 After that, rpcrdma_bc_receive_call will meets     NULL pointer as, [ 226.057890] BUG: unable to handle kernel NULL pointer dereference at 00000000000000c8     ... [ 226.058704] RIP: 0010:_raw_spin_lock+0xc/0x20 ... [ 226.059732] Call Trace: [ 226.059878]     rpcrdma_bc_receive_call+0x138/0x327 [rpcrdma] [ 226.060011] __ib_process_cq+0x89/0x170 [ib_core] [     226.060092] ib_cq_poll_work+0x26/0x80 [ib_core] [ 226.060257] process_one_work+0x1a7/0x360 [ 226.060367] ?     create_worker+0x1a0/0x1a0 [ 226.060440] worker_thread+0x30/0x390 [ 226.060500] ? create_worker+0x1a0/0x1a0     [ 226.060574] kthread+0x116/0x130 [ 226.060661] ? kthread_flush_work_fn+0x10/0x10 [ 226.060724]     ret_from_fork+0x35/0x40 ... (CVE-2022-49321)

  - In the Linux kernel, the following vulnerability has been resolved: af_unix: Fix a data-race in     unix_dgram_peer_wake_me(). unix_dgram_poll() calls unix_dgram_peer_wake_me() without `other`'s lock held     and check if its receive queue is full. Here we need to use unix_recvq_full_lockless() instead of     unix_recvq_full(), otherwise KCSAN will report a data-race. (CVE-2022-49344)

  - In the Linux kernel, the following vulnerability has been resolved: x86/MCE/AMD: Fix memory leak when     threshold_create_bank() fails In mce_threshold_create_device(), if threshold_create_bank() fails, the     previously allocated threshold banks array @bp will be leaked because the call to     mce_threshold_remove_device() will not free it. This happens because mce_threshold_remove_device() fetches     the pointer through the threshold_banks per-CPU variable but bp is written there only after the bank     creation is successful, and not before, when threshold_create_bank() fails. Add a helper which unwinds all     the bank creation work previously done and pass into it the previously allocated threshold banks array for     freeing. [ bp: Massage. ] (CVE-2022-49549)

  - In the Linux kernel, the following vulnerability has been resolved: mm/mempolicy: fix uninit-value in     mpol_rebind_policy() mpol_set_nodemask()(mm/mempolicy.c) does not set up nodemask when pol->mode is     MPOL_LOCAL. Check pol->mode before access pol->w.cpuset_mems_allowed in     mpol_rebind_policy()(mm/mempolicy.c). BUG: KMSAN: uninit-value in mpol_rebind_policy mm/mempolicy.c:352     [inline] BUG: KMSAN: uninit-value in mpol_rebind_task+0x2ac/0x2c0 mm/mempolicy.c:368 mpol_rebind_policy     mm/mempolicy.c:352 [inline] mpol_rebind_task+0x2ac/0x2c0 mm/mempolicy.c:368 cpuset_change_task_nodemask     kernel/cgroup/cpuset.c:1711 [inline] cpuset_attach+0x787/0x15e0 kernel/cgroup/cpuset.c:2278     cgroup_migrate_execute+0x1023/0x1d20 kernel/cgroup/cgroup.c:2515 cgroup_migrate     kernel/cgroup/cgroup.c:2771 [inline] cgroup_attach_task+0x540/0x8b0 kernel/cgroup/cgroup.c:2804
    __cgroup1_procs_write+0x5cc/0x7a0 kernel/cgroup/cgroup-v1.c:520 cgroup1_tasks_write+0x94/0xb0     kernel/cgroup/cgroup-v1.c:539 cgroup_file_write+0x4c2/0x9e0 kernel/cgroup/cgroup.c:3852     kernfs_fop_write_iter+0x66a/0x9f0 fs/kernfs/file.c:296 call_write_iter include/linux/fs.h:2162 [inline]     new_sync_write fs/read_write.c:503 [inline] vfs_write+0x1318/0x2030 fs/read_write.c:590     ksys_write+0x28b/0x510 fs/read_write.c:643 __do_sys_write fs/read_write.c:655 [inline] __se_sys_write     fs/read_write.c:652 [inline] __x64_sys_write+0xdb/0x120 fs/read_write.c:652 do_syscall_x64     arch/x86/entry/common.c:51 [inline] do_syscall_64+0x54/0xd0 arch/x86/entry/common.c:82     entry_SYSCALL_64_after_hwframe+0x44/0xae Uninit was created at: slab_post_alloc_hook mm/slab.h:524     [inline] slab_alloc_node mm/slub.c:3251 [inline] slab_alloc mm/slub.c:3259 [inline]     kmem_cache_alloc+0x902/0x11c0 mm/slub.c:3264 mpol_new mm/mempolicy.c:293 [inline]     do_set_mempolicy+0x421/0xb70 mm/mempolicy.c:853 kernel_set_mempolicy mm/mempolicy.c:1504 [inline]
    __do_sys_set_mempolicy mm/mempolicy.c:1510 [inline] __se_sys_set_mempolicy+0x44c/0xb60 mm/mempolicy.c:1507
    __x64_sys_set_mempolicy+0xd8/0x110 mm/mempolicy.c:1507 do_syscall_x64 arch/x86/entry/common.c:51 [inline]     do_syscall_64+0x54/0xd0 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x44/0xae KMSAN: uninit-     value in mpol_rebind_task (2)     https://syzkaller.appspot.com/bug?id=d6eb90f952c2a5de9ea718a1b873c55cb13b59dc This patch seems to fix     below bug too. KMSAN: uninit-value in mpol_rebind_mm (2)     https://syzkaller.appspot.com/bug?id=f2fecd0d7013f54ec4162f60743a2b28df40926b The uninit-value is     pol->w.cpuset_mems_allowed in mpol_rebind_policy(). When syzkaller reproducer runs to the beginning of     mpol_new(), mpol_new() mm/mempolicy.c do_mbind() mm/mempolicy.c kernel_mbind() mm/mempolicy.c `mode` is     1(MPOL_PREFERRED), nodes_empty(*nodes) is `true` and `flags` is 0. Then mode = MPOL_LOCAL; ...
    policy->mode = mode; policy->flags = flags; will be executed. So in mpol_set_nodemask(),     mpol_set_nodemask() mm/mempolicy.c do_mbind() kernel_mbind() pol->mode is 4 (MPOL_LOCAL), that `nodemask`     in `pol` is not initialized, which will be accessed in mpol_rebind_policy(). (CVE-2022-49567)

  - In the Linux kernel, the following vulnerability has been resolved: i2c: piix4: Fix a memory leak in the     EFCH MMIO support The recently added support for EFCH MMIO regions introduced a memory leak in that code     path. The leak is caused by the fact that release_resource() merely removes the resource from the tree but     does not free its memory. We need to call release_mem_region() instead, which does free the memory. As a     nice side effect, this brings back some symmetry between the legacy and MMIO paths. (CVE-2022-49653)

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

The CentOS Linux 8.4 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare CENTOS8.4:CLSA-2025:1753297988 advisory.

  - In the Linux kernel, the following vulnerability has been resolved: mptcp: fix race on unaccepted mptcp     sockets When the listener socket owning the relevant request is closed, it frees the unaccepted subflows     and that causes later deletion of the paired MPTCP sockets. The mptcp socket's worker can run in the time     interval between such delete operations. When that happens, any access to msk->first will cause an UaF     access, as the subflow cleanup did not cleared such field in the mptcp socket. Address the issue     explicitly traversing the listener socket accept queue at close time and performing the needed cleanup on     the pending msk. Note that the locking is a bit tricky, as we need to acquire the msk socket lock, while     still owning the subflow socket one. (CVE-2022-49669)

  - In the Linux kernel, the following vulnerability has been resolved: tty: n_gsm: add sanity check for     gsm->receive in gsm_receive_buf() A null pointer dereference can happen when attempting to access the     gsm->receive() function in gsmld_receive_buf(). Currently, the code assumes that gsm->recieve is only     called after MUX activation. Since the gsmld_receive_buf() function can be accessed without the need to     initialize the MUX, the gsm->receive() function will not be set and a NULL pointer dereference will occur.
    Fix this by avoiding the call to gsm->receive() in case the function is not initialized by adding a     sanity check. Call Trace: <TASK> gsmld_receive_buf+0x1c2/0x2f0 drivers/tty/n_gsm.c:2861 tiocsti     drivers/tty/tty_io.c:2293 [inline] tty_ioctl+0xa75/0x15d0 drivers/tty/tty_io.c:2692 vfs_ioctl     fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline]
    __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline]     do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd     (CVE-2022-49940)

  - In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: clear optc underflow     before turn off odm clock [Why] After ODM clock off, optc underflow bit will be kept there always and     clear not work. We need to clear that before clock off. [How] Clear that if have when clock off.
    (CVE-2022-49969)

  - In the Linux kernel, the following vulnerability has been resolved: net: atlantic: fix aq_vec index out of     range error The final update statement of the for loop exceeds the array range, the dereference of     self->aq_vec[i] is not checked and then leads to the index out of range error. Also fixed this kind of     coding style in other for loop. [ 97.937604] UBSAN: array-index-out-of-bounds in     drivers/net/ethernet/aquantia/atlantic/aq_nic.c:1404:48 [ 97.937607] index 8 is out of range for type     'aq_vec_s *[8]' [ 97.937608] CPU: 38 PID: 3767 Comm: kworker/u256:18 Not tainted 5.19.0+ #2 [ 97.937610]     Hardware name: Dell Inc. Precision 7865 Tower/, BIOS 1.0.0 06/12/2022 [ 97.937611] Workqueue:
    events_unbound async_run_entry_fn [ 97.937616] Call Trace: [ 97.937617] <TASK> [ 97.937619]     dump_stack_lvl+0x49/0x63 [ 97.937624] dump_stack+0x10/0x16 [ 97.937626] ubsan_epilogue+0x9/0x3f [     97.937627] __ubsan_handle_out_of_bounds.cold+0x44/0x49 [ 97.937629] ? __scm_send+0x348/0x440 [ 97.937632]     ? aq_vec_stop+0x72/0x80 [atlantic] [ 97.937639] aq_nic_stop+0x1b6/0x1c0 [atlantic] [ 97.937644]     aq_suspend_common+0x88/0x90 [atlantic] [ 97.937648] aq_pm_suspend_poweroff+0xe/0x20 [atlantic] [     97.937653] pci_pm_suspend+0x7e/0x1a0 [ 97.937655] ? pci_pm_suspend_noirq+0x2b0/0x2b0 [ 97.937657]     dpm_run_callback+0x54/0x190 [ 97.937660] __device_suspend+0x14c/0x4d0 [ 97.937661] async_suspend+0x23/0x70     [ 97.937663] async_run_entry_fn+0x33/0x120 [ 97.937664] process_one_work+0x21f/0x3f0 [ 97.937666]     worker_thread+0x4a/0x3c0 [ 97.937668] ? process_one_work+0x3f0/0x3f0 [ 97.937669] kthread+0xf0/0x120 [     97.937671] ? kthread_complete_and_exit+0x20/0x20 [ 97.937672] ret_from_fork+0x22/0x30 [ 97.937676] </TASK>     v2. fixed warning: variable 'aq_vec' set but not used v3. simplified a for loop (CVE-2022-50066)

  - In the Linux kernel, the following vulnerability has been resolved: NFSv4/pnfs: Fix a use-after-free bug     in open If someone cancels the open RPC call, then we must not try to free either the open slot or the     layoutget operation arguments, since they are likely still in use by the hung RPC call. (CVE-2022-50072)

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

The Rocky Linux 8.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ ciqsa-2026_0865 advisory.

    This advisory aggregates security fixes for the kernel SRPM in CIQ LTS 8.6. It addresses 10 CVEs:
    CVE-2022-50066, CVE-2022-49907, CVE-2022-48929, CVE-2025-38061, CVE-2022-0500, and 5 more.

Tenable has extracted the preceding description block directly from the CIQ 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 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: mptcp: fix race on unaccepted mptcp     sockets When the listener socket owning the relevant request is closed, it frees the unaccepted subflows     and that causes later deletion of the paired MPTCP sockets. The mptcp socket's worker can run in the time     interval between such delete operations. When that happens, any access to msk->first will cause an UaF     access, as the subflow cleanup did not cleared such field in the mptcp socket. Address the issue     explicitly traversing the listener socket accept queue at close time and performing the needed cleanup on     the pending msk. Note that the locking is a bit tricky, as we need to acquire the msk socket lock, while     still owning the subflow socket one. (CVE-2022-49669)

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

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2022:8267 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)

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

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

    * concurrency use-after-free between drm_setmaster_ioctl and drm_mode_getresources (CVE-2022-1280)

    * kernel info leak issue in pfkey_register (CVE-2022-1353)

    * use-after-free in ath9k_htc_probe_device() could cause an escalation of privileges (CVE-2022-1679)

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

    * fanotify misuses fd_install() which could lead to use-after-free (CVE-2022-1998)

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

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

    * slab-out-of-bounds access in packet_recvmsg() (CVE-2022-20368)

    * incomplete clean-up of multi-core shared buffers (aka SBDR) (CVE-2022-21123)

    * incomplete clean-up of microarchitectural fill buffers (aka SBDS) (CVE-2022-21125)

    * incomplete clean-up in specific special register write operations (aka DRPW) (CVE-2022-21166)

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

    * AMD: RetBleed Arbitrary Speculative Code Execution with Return Instructions (CVE-2022-23816,     CVE-2022-29900)

    * AMD: Branch Type Confusion (non-retbleed) (CVE-2022-23825)

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

    * 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)

    * Intel: RetBleed Arbitrary Speculative Code Execution with Return Instructions (CVE-2022-29901)

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

    * nf_tables disallow binding to already bound chain (CVE-2022-39190)

    * 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 9.1 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-2022:7683 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.

ID	Name	Product	Family	Type	Severity
362341	AlmaLinux 9.2 [TuxCare] Security Update: bpftool / kernel / kernel-abi-stablelists / kernel-core / etc Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2026:1778769697)	Nessus	Alma Linux Local Security Checks	Local	high
360874	CentOS Linux 8.4 [TuxCare] Security Update: bpftool / kernel-core / kernel-debug / kernel-debug-core / etc Multiple Vulnerabilities (CENTOS8.4:CLSA-2025:1753297988)	Nessus	CentOS Local Security Checks	Local	high
353591	Rocky Linux 8.6 [CIQ] Security Update: bpftool / bpftool-debuginfo / kernel / kernel-abi-stablelists / etc Multiple Vulnerabilities (ciqsa-2026_0865)	Nessus	Rocky Linux Local Security Checks	Local	high
226625	Linux Distros Unpatched Vulnerability : CVE-2022-49669	Nessus	Misc.	Local	high
167620	RHEL 9 : kernel (RHSA-2022:8267)	Nessus	Red Hat Local Security Checks	Local	high
167155	RHEL 8 : kernel (RHSA-2022:7683)	Nessus	Red Hat Local Security Checks	Local	high

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