In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_{ldisc,serdev}: check percpu_init_rwsem() failure syzbot is reporting NULL pointer dereference at hci_uart_tty_close() [1], for rcu_sync_enter() is called without rcu_sync_init() due to hci_uart_tty_open() ignoring percpu_init_rwsem() failure. While we are at it, fix that hci_uart_register_device() ignores percpu_init_rwsem() failure and hci_uart_unregister_device() does not call percpu_free_rwsem().

The AlmaLinux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1779987841 advisory.

  - In the Linux kernel, the following vulnerability has been resolved: net: hns3: do not allow call     hns3_nic_net_open repeatedly hns3_nic_net_open() is not allowed to called repeatly, but there is no     checking for this. When doing device reset and setup tc concurrently, there is a small oppotunity to call     hns3_nic_net_open repeatedly, and cause kernel bug by calling napi_enable twice. The calltrace information     is like below: [ 3078.222780] ------------[ cut here ]------------ [ 3078.230255] kernel BUG at     net/core/dev.c:6991! [ 3078.236224] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP [ 3078.243431] Modules     linked in: hns3 hclgevf hclge hnae3 vfio_iommu_type1 vfio_pci vfio_virqfd vfio pv680_mii(O) [ 3078.258880]     CPU: 0 PID: 295 Comm: kworker/u8:5 Tainted: G O 5.14.0-rc4+ #1 [ 3078.269102] Hardware name: , BIOS     KpxxxFPGA 1P B600 V181 08/12/2021 [ 3078.276801] Workqueue: hclge hclge_service_task [hclge] [     3078.288774] pstate: 60400009 (nZCv daif +PAN -UAO -TCO BTYPE=--) [ 3078.296168] pc :
    napi_enable+0x80/0x84 tc qdisc sho[w 3d0e7v8 .e3t0h218 79] lr : hns3_nic_net_open+0x138/0x510 [hns3] [     3078.314771] sp : ffff8000108abb20 [ 3078.319099] x29: ffff8000108abb20 x28: 0000000000000000 x27:
    ffff0820a8490300 [ 3078.329121] x26: 0000000000000001 x25: ffff08209cfc6200 x24: 0000000000000000 [     3078.339044] x23: ffff0820a8490300 x22: ffff08209cd76000 x21: ffff0820abfe3880 [ 3078.349018] x20:
    0000000000000000 x19: ffff08209cd76900 x18: 0000000000000000 [ 3078.358620] x17: 0000000000000000 x16:
    ffffc816e1727a50 x15: 0000ffff8f4ff930 [ 3078.368895] x14: 0000000000000000 x13: 0000000000000000 x12:
    0000259e9dbeb6b4 [ 3078.377987] x11: 0096a8f7e764eb40 x10: 634615ad28d3eab5 x9 : ffffc816ad8885b8 [     3078.387091] x8 : ffff08209cfc6fb8 x7 : ffff0820ac0da058 x6 : ffff0820a8490344 [ 3078.396356] x5 :
    0000000000000140 x4 : 0000000000000003 x3 : ffff08209cd76938 [ 3078.405365] x2 : 0000000000000000 x1 :
    0000000000000010 x0 : ffff0820abfe38a0 [ 3078.414657] Call trace: [ 3078.418517] napi_enable+0x80/0x84 [     3078.424626] hns3_reset_notify_up_enet+0x78/0xd0 [hns3] [ 3078.433469] hns3_reset_notify+0x64/0x80 [hns3]     [ 3078.441430] hclge_notify_client+0x68/0xb0 [hclge] [ 3078.450511] hclge_reset_rebuild+0x524/0x884     [hclge] [ 3078.458879] hclge_reset_service_task+0x3c4/0x680 [hclge] [ 3078.467470]     hclge_service_task+0xb0/0xb54 [hclge] [ 3078.475675] process_one_work+0x1dc/0x48c [ 3078.481888]     worker_thread+0x15c/0x464 [ 3078.487104] kthread+0x160/0x170 [ 3078.492479] ret_from_fork+0x10/0x18 [     3078.498785] Code: c8027c81 35ffffa2 d50323bf d65f03c0 (d4210000) [ 3078.506889] ---[ end trace     8ebe0340a1b0fb44 ]--- Once hns3_nic_net_open() is excute success, the flag HNS3_NIC_STATE_DOWN will be     cleared. So add checking for this flag, directly return when HNS3_NIC_STATE_DOWN is no set.
    (CVE-2021-47400)

  - In the Linux kernel, the following vulnerability has been resolved: can: isotp: isotp_sendmsg(): add     result check for wait_event_interruptible() Using wait_event_interruptible() to wait for complete     transmission, but do not check the result of wait_event_interruptible() which can be interrupted. It will     result in TX buffer has multiple accessors and the later process interferes with the previous process.
    Following is one of the problems reported by syzbot.
    ============================================================= WARNING: CPU: 0 PID: 0 at     net/can/isotp.c:840 isotp_tx_timer_handler+0x2e0/0x4c0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted     5.13.0-rc7+ #68 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1 04/01/2014     RIP: 0010:isotp_tx_timer_handler+0x2e0/0x4c0 Call Trace: <IRQ> ? isotp_setsockopt+0x390/0x390
    __hrtimer_run_queues+0xb8/0x610 hrtimer_run_softirq+0x91/0xd0 ? rcu_read_lock_sched_held+0x4d/0x80
    __do_softirq+0xe8/0x553 irq_exit_rcu+0xf8/0x100 sysvec_apic_timer_interrupt+0x9e/0xc0 </IRQ>     asm_sysvec_apic_timer_interrupt+0x12/0x20 Add result check for wait_event_interruptible() in     isotp_sendmsg() to avoid multiple accessers for tx buffer. (CVE-2021-47457)

  - In the Linux kernel, the following vulnerability has been resolved: serial: core: fix transmit-buffer     reset and memleak Commit 761ed4a94582 (tty: serial_core: convert uart_close to use tty_port_close)     converted serial core to use tty_port_close() but failed to notice that the transmit buffer still needs to     be freed on final close. Not freeing the transmit buffer means that the buffer is no longer cleared on     next open so that any ioctl() waiting for the buffer to drain might wait indefinitely (e.g. on termios     changes) or that stale data can end up being transmitted in case tx is restarted. Furthermore, the buffer     of any port that has been opened would leak on driver unbind. Note that the port lock is held when     clearing the buffer pointer due to the ldisc race worked around by commit a5ba1d95e46e (uart: fix race     between uart_put_char() and uart_shutdown()). Also note that the tty-port shutdown() callback is not     called for console ports so it is not strictly necessary to free the buffer page after releasing the lock     (cf. d72402145ace (tty/serial: do not free trasnmit buffer page under port lock)). (CVE-2021-47527)

  - In the Linux kernel, the following vulnerability has been resolved: mm/gup: fix gup_pud_range() for dax     For dax pud, pud_huge() returns true on x86. So the function works as long as hugetlb is configured.
    However, dax doesn't depend on hugetlb. Commit 414fd080d125 (mm/gup: fix gup_pmd_range() for dax) fixed     devmap-backed huge PMDs, but missed devmap-backed huge PUDs. Fix this as well. This fixes the below kernel     panic: general protection fault, probably for non-canonical address 0x69e7c000cc478: 0000 [#1] SMP < snip     > Call Trace: <TASK> get_user_pages_fast+0x1f/0x40 iov_iter_get_pages+0xc6/0x3b0 ?     mempool_alloc+0x5d/0x170 bio_iov_iter_get_pages+0x82/0x4e0 ? bvec_alloc+0x91/0xc0 ?     bio_alloc_bioset+0x19a/0x2a0 blkdev_direct_IO+0x282/0x480 ? __io_complete_rw_common+0xc0/0xc0 ?     filemap_range_has_page+0x82/0xc0 generic_file_direct_write+0x9d/0x1a0 ? inode_update_time+0x24/0x30
    __generic_file_write_iter+0xbd/0x1e0 blkdev_write_iter+0xb4/0x150 ? io_import_iovec+0x8d/0x340     io_write+0xf9/0x300 io_issue_sqe+0x3c3/0x1d30 ? sysvec_reschedule_ipi+0x6c/0x80 __io_queue_sqe+0x33/0x240     ? fget+0x76/0xa0 io_submit_sqes+0xe6a/0x18d0 ? __fget_light+0xd1/0x100
    __x64_sys_io_uring_enter+0x199/0x880 ? __context_tracking_enter+0x1f/0x70 ?     irqentry_exit_to_user_mode+0x24/0x30 ? irqentry_exit+0x1d/0x30 ? __context_tracking_exit+0xe/0x70     do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7fc97c11a7be < snip > </TASK>
    ---[ end trace 48b2e0e67debcaeb ]--- RIP: 0010:internal_get_user_pages_fast+0x340/0x990 < snip > Kernel     panic - not syncing: Fatal exception Kernel Offset: disabled (CVE-2022-48986)

  - In the Linux kernel, the following vulnerability has been resolved: lz4: fix LZ4_decompress_safe_partial     read out of bound When partialDecoding, it is EOF if we've either filled the output buffer or can't     proceed with reading an offset for following match. In some extreme corner cases when compressed data is     suitably corrupted, UAF will occur. As reported by KASAN [1], LZ4_decompress_safe_partial may lead to read     out of bound problem during decoding. lz4 upstream has fixed it [2] and this issue has been disscussed     here [3] before. current decompression routine was ported from lz4 v1.8.3, bumping lib/lz4 to v1.9.+ is     certainly a huge work to be done later, so, we'd better fix it first. [1]     https://lore.kernel.org/all/000000000000830d1205cf7f0477@google.com/ [2]     https://github.com/lz4/lz4/commit/c5d6f8a8be3927c0bec91bcc58667a6cfad244ad# [3]     https://lore.kernel.org/all/CC666AE8-4CA4-4951-B6FB-A2EFDE3AC03B@fb.com/ (CVE-2022-49078)

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

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-993151 advisory.

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

    Bluetooth: hci_{ldisc,serdev}: check percpu_init_rwsem() failure

    syzbot is reporting NULL pointer dereference at hci_uart_tty_close() [1],     for rcu_sync_enter() is called without rcu_sync_init() due to     hci_uart_tty_open() ignoring percpu_init_rwsem() failure.

    While we are at it, fix that hci_uart_register_device() ignores     percpu_init_rwsem() failure and hci_uart_unregister_device() does not     call percpu_free_rwsem().

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

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

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-992252 advisory.

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

    Bluetooth: hci_{ldisc,serdev}: check percpu_init_rwsem() failure

    syzbot is reporting NULL pointer dereference at hci_uart_tty_close() [1],     for rcu_sync_enter() is called without rcu_sync_init() due to     hci_uart_tty_open() ignoring percpu_init_rwsem() failure.

    While we are at it, fix that hci_uart_register_device() ignores     percpu_init_rwsem() failure and hci_uart_unregister_device() does not     call percpu_free_rwsem().

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

Note that Nessus has not tested for this issue 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-2025:03628-1 advisory.

    The SUSE Linux Enterprise 15 SP4 kernel was updated to receive various security bugfixes.


    The following security bugs were fixed:

    - CVE-2022-49138: Bluetooth: hci_event: Fix checking conn for le_conn_complete_evt (bsc#1238160).
    - CVE-2022-49980: USB: gadget: fix use-after-free read in usb_udc_uevent() (bsc#1245110).
    - CVE-2022-50233: Bluetooth: eir: Fix using strlen with hdev->{dev_name,short_name} (bsc#1246968).
    - CVE-2022-50252: igb: Do not free q_vector unless new one was allocated (bsc#1249846).
    - CVE-2022-50409: net: If sock is dead do not access sock's sk_wq in sk_stream_wait_memory (bsc#1250392).
    - CVE-2023-53178: mm: fix zswap writeback race condition (bsc#1249827).
    - CVE-2023-53321: wifi: mac80211_hwsim: drop short frames (bsc#1250313).
    - CVE-2023-53438: x86/MCE: Always save CS register on AMD Zen IF Poison errors (bsc#1250180).
    - CVE-2025-23155: net: stmmac: Fix accessing freed irq affinity_hint (bsc#1242573).
    - CVE-2025-37738: ext4: ignore xattrs past end (bsc#1242846).
    - CVE-2025-37885: KVM: x86: Reset IRTE to host control if *new* route isn't postable (bsc#1242960).
    - CVE-2025-37958: mm/huge_memory: fix dereferencing invalid pmd migration entry (bsc#1243539).
    - CVE-2025-38014: dmaengine: idxd: Refactor remove call with idxd_cleanup() helper (bsc#1244732).
    - CVE-2025-38084: mm/hugetlb: unshare page tables during VMA split, not before (bsc#1245498).
    - CVE-2025-38085: mm/hugetlb: fix huge_pmd_unshare() vs GUP-fast race (bsc#1245499).
    - CVE-2025-38111: net/mdiobus: Fix potential out-of-bounds read/write access (bsc#1245666).
    - CVE-2025-38184: tipc: fix null-ptr-deref when acquiring remote ip of ethernet bearer (bsc#1245956).
    - CVE-2025-38380: i2c/designware: Fix an initialization issue (bsc#1247028).
    - CVE-2025-38470: net: vlan: fix VLAN 0 refcount imbalance of toggling filtering during runtime     (bsc#1247288).
    - CVE-2025-38476: rpl: Fix use-after-free in rpl_do_srh_inline() (bsc#1247317).
    - CVE-2025-38488: smb: client: fix use-after-free in crypt_message when using async crypto (bsc#1247239).
    - CVE-2025-38553: net/sched: Restrict conditions for adding duplicating netems to qdisc tree     (bsc#1248255).
    - CVE-2025-38572: ipv6: reject malicious packets in ipv6_gso_segment() (bsc#1248399).
    - CVE-2025-38659: gfs2: No more self recovery (bsc#1248639).
    - CVE-2025-38664: ice: Fix a null pointer dereference in ice_copy_and_init_pkg() (bsc#1248628).
    - CVE-2025-38678: netfilter: nf_tables: reject duplicate device on updates (bsc#1249126).
    - CVE-2025-38685: fbdev: Fix vmalloc out-of-bounds write in fast_imageblit (bsc#1249220).
    - CVE-2025-38706: ASoC: core: Check for rtd == NULL in snd_soc_remove_pcm_runtime() (bsc#1249195).
    - CVE-2025-38713: hfsplus: fix slab-out-of-bounds read in hfsplus_uni2asc() (bsc#1249200).
    - CVE-2025-38734: net/smc: fix UAF on smcsk after smc_listen_out() (bsc#1249324).
    - CVE-2025-39691: fs/buffer: fix use-after-free when call bh_read() helper (bsc#1249374).
    - CVE-2025-39703: net, hsr: reject HSR frame if skb can't hold tag (bsc#1249315).
    - CVE-2025-39726: s390/ism: fix concurrency management in ism_cmd() (bsc#1249266).
    - CVE-2025-39746: wifi: ath10k: shutdown driver when hardware is unreliable (bsc#1249516).
    - CVE-2025-39751: ALSA: hda/ca0132: Fix buffer overflow in add_tuning_control (bsc#1249538).
    - CVE-2025-39790: bus: mhi: host: Detect events pointing to unexpected TREs (bsc#1249548).
    - CVE-2025-39797: xfrm: xfrm_alloc_spi shouldn't use 0 as SPI (bsc#1249608).
    - CVE-2025-39823: KVM: x86: use array_index_nospec with indices that come from guest (bsc#1250002).
    - CVE-2025-39824: HID: asus: fix UAF via HID_CLAIMED_INPUT validation (bsc#1250007).
    - CVE-2025-39860: Bluetooth: Fix use-after-free in l2cap_sock_cleanup_listen() (bsc#1250247).
    - CVE-2025-39869: dmaengine: ti: edma: Fix memory allocation size for queue_priority_map (bsc#1250406).


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-2025:03615-1 advisory.

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


    The following security bugs were fixed:

    - CVE-2022-49138: Bluetooth: hci_event: Fix checking conn for le_conn_complete_evt (bsc#1238160).
    - CVE-2022-50233: Bluetooth: eir: Fix using strlen with hdev->{dev_name,short_name} (bsc#1246968).
    - CVE-2022-50252: igb: Do not free q_vector unless new one was allocated (bsc#1249846).
    - CVE-2022-50409: net: If sock is dead do not access sock's sk_wq in sk_stream_wait_memory (bsc#1250392).
    - CVE-2023-53178: mm: fix zswap writeback race condition (bsc#1249827).
    - CVE-2023-53257: wifi: mac80211: check S1G action frame size (bsc#1249869).
    - CVE-2023-53321: wifi: mac80211_hwsim: drop short frames (bsc#1250313).
    - CVE-2023-53438: x86/MCE: Always save CS register on AMD Zen IF Poison errors (bsc#1250180).
    - CVE-2025-37738: ext4: ignore xattrs past end (bsc#1242846).
    - CVE-2025-37958: mm/huge_memory: fix dereferencing invalid pmd migration entry (bsc#1243539).
    - CVE-2025-38014: dmaengine: idxd: Refactor remove call with idxd_cleanup() helper (bsc#1244732).
    - CVE-2025-38111: net/mdiobus: Fix potential out-of-bounds read/write access (bsc#1245666).
    - CVE-2025-38380: i2c/designware: Fix an initialization issue (bsc#1247028).
    - CVE-2025-38488: smb: client: fix use-after-free in crypt_message when using async crypto (bsc#1247239).
    - CVE-2025-38553: net/sched: Restrict conditions for adding duplicating netems to qdisc tree     (bsc#1248255).
    - CVE-2025-38572: ipv6: reject malicious packets in ipv6_gso_segment() (bsc#1248399).
    - CVE-2025-38659: gfs2: No more self recovery (bsc#1248639).
    - CVE-2025-38664: ice: Fix a null pointer dereference in ice_copy_and_init_pkg() (bsc#1248628).
    - CVE-2025-38678: netfilter: nf_tables: reject duplicate device on updates (bsc#1249126).
    - CVE-2025-38685: fbdev: Fix vmalloc out-of-bounds write in fast_imageblit (bsc#1249220).
    - CVE-2025-38706: ASoC: core: Check for rtd == NULL in snd_soc_remove_pcm_runtime() (bsc#1249195).
    - CVE-2025-38713: hfsplus: fix slab-out-of-bounds read in hfsplus_uni2asc() (bsc#1249200).
    - CVE-2025-38734: net/smc: fix UAF on smcsk after smc_listen_out() (bsc#1249324).
    - CVE-2025-39691: fs/buffer: fix use-after-free when call bh_read() helper (bsc#1249374).
    - CVE-2025-39703: net, hsr: reject HSR frame if skb can't hold tag (bsc#1249315).
    - CVE-2025-39726: s390/ism: fix concurrency management in ism_cmd() (bsc#1249266).
    - CVE-2025-39746: wifi: ath10k: shutdown driver when hardware is unreliable (bsc#1249516).
    - CVE-2025-39751: ALSA: hda/ca0132: Fix buffer overflow in add_tuning_control (bsc#1249538).
    - CVE-2025-39790: bus: mhi: host: Detect events pointing to unexpected TREs (bsc#1249548).
    - CVE-2025-39823: KVM: x86: use array_index_nospec with indices that come from guest (bsc#1250002).
    - CVE-2025-39824: HID: asus: fix UAF via HID_CLAIMED_INPUT validation (bsc#1250007).
    - CVE-2025-39860: Bluetooth: Fix use-after-free in l2cap_sock_cleanup_listen() (bsc#1250247).
    - CVE-2025-39869: dmaengine: ti: edma: Fix memory allocation size for queue_priority_map (bsc#1250406).


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

  - Bluetooth: hci_{ldisc,serdev}: check percpu_init_rwsem() failure syzbot is reporting NULL pointer     dereference at hci_uart_tty_close() [1], for rcu_sync_enter() is called without rcu_sync_init() due to     hci_uart_tty_open() ignoring percpu_init_rwsem() failure. While we are at it, fix that     hci_uart_register_device() ignores percpu_init_rwsem() failure and hci_uart_unregister_device() does not     call percpu_free_rwsem(). (CVE-2022-50374)

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

An update of the linux package has been released.

ID	Name	Product	Family	Type	Severity
360748	AlmaLinux 9.2 [TuxCare] Security Update: bpftool / kernel / kernel-abi-stablelists / kernel-core / etc Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2026:1779987841)	Nessus	Alma Linux Local Security Checks	Local	high
302981	EulerOS Virtualization 2.13.1 : kernel (EulerOS-SA-2026-1637)	Nessus	Huawei Local Security Checks	Local	high
302971	EulerOS Virtualization 2.13.0 : kernel (EulerOS-SA-2026-1629)	Nessus	Huawei Local Security Checks	Local	high
297598	EulerOS 2.0 SP13 : kernel (EulerOS-SA-2026-1212)	Nessus	Huawei Local Security Checks	Local	high
297592	EulerOS 2.0 SP13 : kernel (EulerOS-SA-2026-1224)	Nessus	Huawei Local Security Checks	Local	high
280955	Unity Linux 20.1060a Security Update: kernel (UTSA-2025-993151)	Nessus	Unity Linux Local Security Checks	Local	medium
280434	Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2025-992252)	Nessus	Unity Linux Local Security Checks	Local	medium
270857	SUSE SLES15 Security Update : kernel (SUSE-SU-2025:03628-1)	Nessus	SuSE Local Security Checks	Local	high
270837	SUSE SLES15 : Security update for the Linux Kernel (SUSE-SU-2025:03615-1)	Nessus	SuSE Local Security Checks	Local	high
265620	Linux Distros Unpatched Vulnerability : CVE-2022-50374	Nessus	Misc.	Local	medium
151965	Photon OS 4.0: Linux PHSA-2021-4.0-0065	Nessus	PhotonOS Local Security Checks	Local	high

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CVE-2022-50374

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