In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btmtk: validate WMT event SKB length before struct access btmtk_usb_hci_wmt_sync() casts the WMT event response SKB data to struct btmtk_hci_wmt_evt (7 bytes) and struct btmtk_hci_wmt_evt_funcc (9 bytes) without first checking that the SKB contains enough data. A short firmware response causes out-of-bounds reads from SKB tailroom. Use skb_pull_data() to validate and advance past the base WMT event header. For the FUNC_CTRL case, pull the additional status field bytes before accessing them.

The Rocky Linux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1786352940 advisory.

  - In the Linux kernel, the following vulnerability has been resolved: serial: imx: fix tx statemachine     deadlock When using the serial port as RS485 port, the tx statemachine is used to control the RTS pin to     drive the RS485 transceiver TX_EN pin. When the TTY port is closed in the middle of a transmission (for     instance during userland application crash), imx_uart_shutdown disables the interface and disables the     Transmission Complete interrupt. afer that, imx_uart_stop_tx bails on an incomplete transmission, to be     retriggered by the TC interrupt. This interrupt is disabled and therefore the tx statemachine never     transitions out of SEND. The statemachine is in deadlock now, and the TX_EN remains low, making the     interface useless. imx_uart_stop_tx now checks for incomplete transmission AND whether TC interrupts are     enabled before bailing to be retriggered. This makes sure the state machine handling is reached, and is     properly set to WAIT_AFTER_SEND. (CVE-2023-52456)

  - In the Linux kernel, the following vulnerability has been resolved: kdb: Fix buffer overflow during tab-     complete Currently, when the user attempts symbol completion with the Tab key, kdb will use strncpy() to     insert the completed symbol into the command buffer. Unfortunately it passes the size of the source buffer     rather than the destination to strncpy() with predictably horrible results. Most obviously if the command     buffer is already full but cp, the cursor position, is in the middle of the buffer, then we will write     past the end of the supplied buffer. Fix this by replacing the dubious strncpy() calls with     memmove()/memcpy() calls plus explicit boundary checks to make sure we have enough space before we start     moving characters around. (CVE-2024-39480)

  - In the Linux kernel, the following vulnerability has been resolved: Fix userfaultfd_api to return EINVAL     as expected Currently if we request a feature that is not set in the Kernel config we fail silently and     return all the available features. However, the man page indicates we should return an EINVAL. We need to     fix this issue since we can end up with a Kernel warning should a program request the feature     UFFD_FEATURE_WP_UNPOPULATED on a kernel with the config not set with this feature. [ 200.812896] WARNING:
    CPU: 91 PID: 13634 at mm/memory.c:1660 zap_pte_range+0x43d/0x660 [ 200.820738] Modules linked in: [     200.869387] CPU: 91 PID: 13634 Comm: userfaultfd Kdump: loaded Not tainted 6.9.0-rc5+ #8 [ 200.877477]     Hardware name: Dell Inc. PowerEdge R6525/0N7YGH, BIOS 2.7.3 03/30/2022 [ 200.885052] RIP:
    0010:zap_pte_range+0x43d/0x660 (CVE-2024-41027)

  - In the Linux kernel, the following vulnerability has been resolved: mlxsw: core_linecards: Fix double     memory deallocation in case of invalid INI file In case of invalid INI file mlxsw_linecard_types_init()     deallocates memory but doesn't reset pointer to NULL and returns 0. In case of any error occurred after     mlxsw_linecard_types_init() call, mlxsw_linecards_init() calls mlxsw_linecard_types_fini() which performs     memory deallocation again. Add pointer reset to NULL. Found by Linux Verification Center     (linuxtesting.org) with SVACE. (CVE-2024-42138)

  - In the Linux kernel, the following vulnerability has been resolved: x86/tdx: Fix data leak in mmio_read()     The mmio_read() function makes a TDVMCALL to retrieve MMIO data for an address from the VMM. Sean noticed     that mmio_read() unintentionally exposes the value of an initialized variable (val) on the stack to the     VMM. This variable is only needed as an output value. It did not need to be passed to the VMM in the first     place. Do not send the original value of *val to the VMM. [ dhansen: clarify what 'val' is used for. ]     (CVE-2024-46794)

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

The AlmaLinux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1786352940 advisory.

  - In the Linux kernel, the following vulnerability has been resolved: serial: imx: fix tx statemachine     deadlock When using the serial port as RS485 port, the tx statemachine is used to control the RTS pin to     drive the RS485 transceiver TX_EN pin. When the TTY port is closed in the middle of a transmission (for     instance during userland application crash), imx_uart_shutdown disables the interface and disables the     Transmission Complete interrupt. afer that, imx_uart_stop_tx bails on an incomplete transmission, to be     retriggered by the TC interrupt. This interrupt is disabled and therefore the tx statemachine never     transitions out of SEND. The statemachine is in deadlock now, and the TX_EN remains low, making the     interface useless. imx_uart_stop_tx now checks for incomplete transmission AND whether TC interrupts are     enabled before bailing to be retriggered. This makes sure the state machine handling is reached, and is     properly set to WAIT_AFTER_SEND. (CVE-2023-52456)

  - In the Linux kernel, the following vulnerability has been resolved: kdb: Fix buffer overflow during tab-     complete Currently, when the user attempts symbol completion with the Tab key, kdb will use strncpy() to     insert the completed symbol into the command buffer. Unfortunately it passes the size of the source buffer     rather than the destination to strncpy() with predictably horrible results. Most obviously if the command     buffer is already full but cp, the cursor position, is in the middle of the buffer, then we will write     past the end of the supplied buffer. Fix this by replacing the dubious strncpy() calls with     memmove()/memcpy() calls plus explicit boundary checks to make sure we have enough space before we start     moving characters around. (CVE-2024-39480)

  - In the Linux kernel, the following vulnerability has been resolved: Fix userfaultfd_api to return EINVAL     as expected Currently if we request a feature that is not set in the Kernel config we fail silently and     return all the available features. However, the man page indicates we should return an EINVAL. We need to     fix this issue since we can end up with a Kernel warning should a program request the feature     UFFD_FEATURE_WP_UNPOPULATED on a kernel with the config not set with this feature. [ 200.812896] WARNING:
    CPU: 91 PID: 13634 at mm/memory.c:1660 zap_pte_range+0x43d/0x660 [ 200.820738] Modules linked in: [     200.869387] CPU: 91 PID: 13634 Comm: userfaultfd Kdump: loaded Not tainted 6.9.0-rc5+ #8 [ 200.877477]     Hardware name: Dell Inc. PowerEdge R6525/0N7YGH, BIOS 2.7.3 03/30/2022 [ 200.885052] RIP:
    0010:zap_pte_range+0x43d/0x660 (CVE-2024-41027)

  - In the Linux kernel, the following vulnerability has been resolved: mlxsw: core_linecards: Fix double     memory deallocation in case of invalid INI file In case of invalid INI file mlxsw_linecard_types_init()     deallocates memory but doesn't reset pointer to NULL and returns 0. In case of any error occurred after     mlxsw_linecard_types_init() call, mlxsw_linecards_init() calls mlxsw_linecard_types_fini() which performs     memory deallocation again. Add pointer reset to NULL. Found by Linux Verification Center     (linuxtesting.org) with SVACE. (CVE-2024-42138)

  - In the Linux kernel, the following vulnerability has been resolved: x86/tdx: Fix data leak in mmio_read()     The mmio_read() function makes a TDVMCALL to retrieve MMIO data for an address from the VMM. Sean noticed     that mmio_read() unintentionally exposes the value of an initialized variable (val) on the stack to the     VMM. This variable is only needed as an output value. It did not need to be passed to the VMM in the first     place. Do not send the original value of *val to the VMM. [ dhansen: clarify what 'val' is used for. ]     (CVE-2024-46794)

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

The AlmaLinux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1786761805 advisory.

  - A flaw was found in the KVM's AMD nested virtualization (SVM). A malicious L1 guest could purposely fail     to intercept the shutdown of a cooperative nested guest (L2), possibly leading to a page fault and kernel     panic in the host (L0). (CVE-2022-3344)

  - In the Linux kernel, the following vulnerability has been resolved: usbnet: Run unregister_netdev() before     unbind() again Commit 2c9d6c2b871d (usbnet: run unbind() before unregister_netdev()) sought to fix a     use-after-free on disconnect of USB Ethernet adapters. It turns out that a different fix is necessary to     address the issue:
    https://lore.kernel.org/netdev/18b3541e5372bc9b9fc733d422f4e698c089077c.1650177997.git.lukas@wunner.de/ So     the commit was not necessary. The commit made binding and unbinding of USB Ethernet asymmetrical: Before,     usbnet_probe() first invoked the ->bind() callback and then register_netdev(). usbnet_disconnect()     mirrored that by first invoking unregister_netdev() and then ->unbind(). Since the commit, the order in     usbnet_disconnect() is reversed and no longer mirrors usbnet_probe(). One consequence is that a PHY     disconnected (and stopped) in ->unbind() is afterwards stopped once more by unregister_netdev() as it     closes the netdev before unregistering. That necessitates a contortion in ->stop() because the PHY may     only be stopped if it hasn't already been disconnected. Reverting the commit allows making the call to     phy_stop() unconditional in ->stop(). (CVE-2022-49501)

  - In the Linux kernel, the following vulnerability has been resolved: crypto: arm64/poly1305 - fix a read     out-of-bound A kasan error was reported during fuzzing: BUG: KASAN: slab-out-of-bounds in     neon_poly1305_blocks.constprop.0+0x1b4/0x250 [poly1305_neon] Read of size 4 at addr ffff0010e293f010 by     task syz-executor.5/1646715 CPU: 4 PID: 1646715 Comm: syz-executor.5 Kdump: loaded Not tainted     5.10.0.aarch64 #1 Hardware name: Huawei TaiShan 2280 /BC11SPCD, BIOS 1.59 01/31/2019 Call trace:
    dump_backtrace+0x0/0x394 show_stack+0x34/0x4c arch/arm64/kernel/stacktrace.c:196 __dump_stack     lib/dump_stack.c:77 [inline] dump_stack+0x158/0x1e4 lib/dump_stack.c:118     print_address_description.constprop.0+0x68/0x204 mm/kasan/report.c:387 __kasan_report+0xe0/0x140     mm/kasan/report.c:547 kasan_report+0x44/0xe0 mm/kasan/report.c:564 check_memory_region_inline     mm/kasan/generic.c:187 [inline] __asan_load4+0x94/0xd0 mm/kasan/generic.c:252     neon_poly1305_blocks.constprop.0+0x1b4/0x250 [poly1305_neon] neon_poly1305_do_update+0x6c/0x15c     [poly1305_neon] neon_poly1305_update+0x9c/0x1c4 [poly1305_neon] crypto_shash_update crypto/shash.c:131     [inline] shash_finup_unaligned+0x84/0x15c crypto/shash.c:179 crypto_shash_finup+0x8c/0x140     crypto/shash.c:193 shash_digest_unaligned+0xb8/0xe4 crypto/shash.c:201 crypto_shash_digest+0xa4/0xfc     crypto/shash.c:217 crypto_shash_tfm_digest+0xb4/0x150 crypto/shash.c:229 essiv_skcipher_setkey+0x164/0x200     [essiv] crypto_skcipher_setkey+0xb0/0x160 crypto/skcipher.c:612 skcipher_setkey+0x3c/0x50     crypto/algif_skcipher.c:305 alg_setkey+0x114/0x2a0 crypto/af_alg.c:220 alg_setsockopt+0x19c/0x210     crypto/af_alg.c:253 __sys_setsockopt+0x190/0x2e0 net/socket.c:2123 __do_sys_setsockopt net/socket.c:2134     [inline] __se_sys_setsockopt net/socket.c:2131 [inline] __arm64_sys_setsockopt+0x78/0x94 net/socket.c:2131
    __invoke_syscall arch/arm64/kernel/syscall.c:36 [inline] invoke_syscall+0x64/0x100     arch/arm64/kernel/syscall.c:48 el0_svc_common.constprop.0+0x220/0x230 arch/arm64/kernel/syscall.c:155     do_el0_svc+0xb4/0xd4 arch/arm64/kernel/syscall.c:217 el0_svc+0x24/0x3c arch/arm64/kernel/entry-     common.c:353 el0_sync_handler+0x160/0x164 arch/arm64/kernel/entry-common.c:369 el0_sync+0x160/0x180     arch/arm64/kernel/entry.S:683 This error can be reproduced by the following code compiled as ko on a     system with kasan enabled: #include <linux/module.h> #include <linux/crypto.h> #include <crypto/hash.h>     #include <crypto/poly1305.h> char test_data[] = \x00\x01\x02\x03\x04\x05\x06\x07     \x08\x09\x0a\x0b\x0c\x0d\x0e\x0f \x10\x11\x12\x13\x14\x15\x16\x17 \x18\x19\x1a\x1b\x1c\x1d\x1e; int     init(void) { struct crypto_shash *tfm = NULL; char *data = NULL, *out = NULL; tfm =     crypto_alloc_shash(poly1305, 0, 0); data = kmalloc(POLY1305_KEY_SIZE - 1, GFP_KERNEL); out =     kmalloc(POLY1305_DIGEST_SIZE, GFP_KERNEL); memcpy(data, test_data, POLY1305_KEY_SIZE - 1);
    crypto_shash_tfm_digest(tfm, data, POLY1305_KEY_SIZE - 1, out); kfree(data); kfree(out); return 0; } void     deinit(void) { } module_init(init) module_exit(deinit) MODULE_LICENSE(GPL); The root cause of the bug     sits in neon_poly1305_blocks. The logic neon_poly1305_blocks() performed is that if it was called with     both s[] and r[] uninitialized, it will first try to initialize them with the data from the first block     that it believed to be 32 bytes in length. First 16 bytes are used as the key and the next 16 bytes for     s[]. This would lead to the aforementioned read out-of-bound. However, after calling poly1305_init_arch(),     only 16 bytes were deducted from the input and s[] is initialized yet again with the following 16 bytes.
    The second initialization of s[] is certainly redundent which indicates that the first initialization     should be for r[] only. This patch fixes the issue by calling poly1305_init_arm64() instead o
    ---truncated--- (CVE-2022-50231)

  - In the Linux kernel, the following vulnerability has been resolved: bpf: Fix reference state management     for synchronous callbacks Currently, verifier verifies callback functions (sync and async) as if they will     be executed once, (i.e. it explores execution state as if the function was being called once). The next     insn to explore is set to start of subprog and the exit from nested frame is handled using curframe > 0     and prepare_func_exit. In case of async callback it uses a customized variant of push_stack simulating a     kind of branch to set up custom state and execution context for the async callback. While this approach is     simple and works when callback really will be executed only once, it is unsafe for all of our current     helpers which are for_each style, i.e. they execute the callback multiple times. A callback releasing     acquired references of the caller may do so multiple times, but currently verifier sees it as one call     inside the frame, which then returns to caller. Hence, it thinks it released some reference that the cb     e.g. got access through callback_ctx (register filled inside cb from spilled typed register on stack).
    Similarly, it may see that an acquire call is unpaired inside the callback, so the caller will copy the     reference state of callback and then will have to release the register with new ref_obj_ids. But again,     the callback may execute multiple times, but the verifier will only account for acquired references for a     single symbolic execution of the callback, which will cause leaks. Note that for async callback case,     things are different. While currently we have bpf_timer_set_callback which only executes it once, even for     multiple executions it would be safe, as reference state is NULL and check_reference_leak would force     program to release state before BPF_EXIT. The state is also unaffected by analysis for the caller frame.
    Hence async callback is safe. Since we want the reference state to be accessible, e.g. for pointers loaded     from stack through callback_ctx's PTR_TO_STACK, we still have to copy caller's reference_state to     callback's bpf_func_state, but we enforce that whatever references it adds to that reference_state has     been released before it hits BPF_EXIT. This requires introducing a new callback_ref member in the     reference state to distinguish between caller vs callee references. Hence, check_reference_leak now errors     out if it sees we are in callback_fn and we have not released callback_ref refs. Since there can be     multiple nested callbacks, like frame 0 -> cb1 -> cb2 etc. we need to also distinguish between whether     this particular ref belongs to this callback frame or parent, and only error for our own, so we store     state->frameno (which is always non-zero for callbacks). In short, callbacks can read parent     reference_state, but cannot mutate it, to be able to use pointers acquired by the caller. They must only     undo their changes (by releasing their own acquired_refs before BPF_EXIT) on top of caller reference_state     before returning (at which point the caller and callback state will match anyway, so no need to copy it     back to caller). (CVE-2022-50650)

  - In the Linux kernel, the following vulnerability has been resolved: net: stmmac: fix possible memory leak     in stmmac_dvr_probe() The bitmap_free() should be called to free priv->af_xdp_zc_qps when     create_singlethread_workqueue() fails, otherwise there will be a memory leak, so we add the err path     error_wq_init to fix it. (CVE-2022-50663)

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: btmtk: validate WMT event SKB length before struct access btmtk_usb_hci_wmt_sync() casts the     WMT event response SKB data to struct btmtk_hci_wmt_evt (7 bytes) and struct btmtk_hci_wmt_evt_funcc (9     bytes) without first checking that the SKB contains enough data. A short firmware response causes out-of-     bounds reads from SKB tailroom. Use skb_pull_data() to validate and advance past the base WMT event     header. For the FUNC_CTRL case, pull the additional status field bytes before accessing them.
    (CVE-2026-46140)

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

ID	Name	Product	Family	Type	Severity
360569	Rocky Linux 9.6 [TuxCare] Security Update: kernel / kernel-abi-stablelists / kernel-core / etc Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1786352940)	Nessus	Rocky Linux Local Security Checks	Local	high
360481	AlmaLinux 9.6 [TuxCare] Security Update: kernel / kernel-abi-stablelists / kernel-core / etc Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1786352940)	Nessus	Alma Linux Local Security Checks	Local	high
352031	AlmaLinux 9.2 [TuxCare] Security Update: bpftool / kernel / kernel-abi-stablelists / kernel-core / etc Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2026:1786761805)	Nessus	Alma Linux Local Security Checks	Local	critical
343532	Ubuntu 24.04 LTS / Pro Realtime 24.04 LTS : Linux kernel (GCP) vulnerabilities (USN-8728-1)	Nessus	Ubuntu Local Security Checks	Local	high
340681	Ubuntu 24.04 LTS / 26.04 LTS / Pro Realtime 24.04 LTS : Linux kernel (NVIDIA) vulnerabilities (USN-8663-1)	Nessus	Ubuntu Local Security Checks	Local	high
340045	Ubuntu 26.04 LTS : Linux kernel (NVIDIA BaseOS) vulnerabilities (USN-8664-1)	Nessus	Ubuntu Local Security Checks	Local	high
335080	openSUSE 16: cluster-md-kmp-64kb / cluster-md-kmp-azure / cluster-md-kmp-default / etc (openSUSE-SU-2026:21555-1)	Nessus	SuSE Local Security Checks	Local	high
329149	SUSE SLED15 / SLES15 : Security update for the Linux Kernel (SUSE-SU-2026:3166-1)	Nessus	SuSE Local Security Checks	Local	medium
317612	Linux Distros Unpatched Vulnerability : CVE-2026-46140	Nessus	Misc.	Local	high

Detections

Analytics

CVE-2026-46140

high

Tenable Plugins

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high

critical

high

high

high

high

medium

high