In the Linux kernel, the following vulnerability has been resolved: mptcp: fix race condition in mptcp_schedule_work() syzbot reported use-after-free in mptcp_schedule_work() [1] Issue here is that mptcp_schedule_work() schedules a work, then gets a refcount on sk->sk_refcnt if the work was scheduled. This refcount will be released by mptcp_worker(). [A] if (schedule_work(...)) { [B] sock_hold(sk); return true; } Problem is that mptcp_worker() can run immediately and complete before [B] We need instead : sock_hold(sk); if (schedule_work(...)) return true; sock_put(sk); [1] refcount_t: addition on 0; use-after-free. WARNING: CPU: 1 PID: 29 at lib/refcount.c:25 refcount_warn_saturate+0xfa/0x1d0 lib/refcount.c:25 Call Trace: <TASK> __refcount_add include/linux/refcount.h:-1 [inline] __refcount_inc include/linux/refcount.h:366 [inline] refcount_inc include/linux/refcount.h:383 [inline] sock_hold include/net/sock.h:816 [inline] mptcp_schedule_work+0x164/0x1a0 net/mptcp/protocol.c:943 mptcp_tout_timer+0x21/0xa0 net/mptcp/protocol.c:2316 call_timer_fn+0x17e/0x5f0 kernel/time/timer.c:1747 expire_timers kernel/time/timer.c:1798 [inline] __run_timers kernel/time/timer.c:2372 [inline] __run_timer_base+0x648/0x970 kernel/time/timer.c:2384 run_timer_base kernel/time/timer.c:2393 [inline] run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2403 handle_softirqs+0x22f/0x710 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] run_ktimerd+0xcf/0x190 kernel/softirq.c:1138 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2025-1350 advisory.

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

    blk-mq: fix NULL dereference on q->elevator in blk_mq_elv_switch_none (CVE-2023-53292)

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

    block: fix race between set_blocksize and read paths (CVE-2025-38073)

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

    HID: core: Harden s32ton() against conversion to 0 bits (CVE-2025-38556)

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

    netfilter: nf_tables: reject duplicate device on updates (CVE-2025-38678)

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

    net/sched: sch_qfq: Fix null-deref in agg_dequeue (CVE-2025-40083)

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

    ACPI: video: Fix use-after-free in acpi_video_switch_brightness() (CVE-2025-40211)

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

    af_unix: Initialise scc_index in unix_add_edge(). (CVE-2025-40214)

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

    vsock: Ignore signal/timeout on connect() if already established (CVE-2025-40248)

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

    net: openvswitch: remove never-working support for setting nsh fields (CVE-2025-40254)

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

    mptcp: fix a race in mptcp_pm_del_add_timer() (CVE-2025-40257)

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

    mptcp: fix race condition in mptcp_schedule_work() (CVE-2025-40258)

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

    scsi: sg: Do not sleep in atomic context (CVE-2025-40259)

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

    be2net: pass wrb_params in case of OS2BMC (CVE-2025-40264)

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

    fs/proc: fix uaf in proc_readdir_de() (CVE-2025-40271)

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

    mm/secretmem: fix use-after-free race in fault handler (CVE-2025-40272)

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

    NFSD: free copynotify stateid in nfs4_free_ol_stateid() (CVE-2025-40273)

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

    drm/vmwgfx: Validate command header size against SVGA_CMD_MAX_DATASIZE (CVE-2025-40277)

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

    net: sched: act_connmark: initialize struct tc_ife to fix kernel leak (CVE-2025-40279)

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

    sctp: prevent possible shift-out-of-bounds in sctp_transport_update_rto (CVE-2025-40281)

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

    virtio-net: fix received length check in big packets (CVE-2025-40292)

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

    iommufd: Don't overflow during division for dirty tracking (CVE-2025-40293)

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

    net: bridge: fix use-after-free due to MST port state bypass (CVE-2025-40297)

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

    fbdev: Add bounds checking in bit_putcs to fix vmalloc-out-of-bounds (CVE-2025-40304)

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

    ntfs3: pretend $Extend records as regular files (CVE-2025-40313)

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

    bpf: Sync pending IRQ work before freeing ring buffer (CVE-2025-40319)

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

    fbdev: bitblit: bound-check glyph index in bit_putcs* (CVE-2025-40322)

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

    fbcon: Set fb_display[i]->mode to NULL when the mode is released (CVE-2025-40323)

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

    NFSD: Fix crash in nfsd4_read_release() (CVE-2025-40324)

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

    sctp: Prevent TOCTOU out-of-bounds write (CVE-2025-40331)

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

    futex: Don't leak robust_list pointer on exec race (CVE-2025-40341)

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

    drm/sysfb: Do not dereference NULL pointer in plane reset (CVE-2025-40360)

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

    fs: ext4: change GFP_KERNEL to GFP_NOFS to avoid deadlock (CVE-2025-40361)

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

    net: ipv6: fix field-spanning memcpy warning in AH output (CVE-2025-40363)

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

    x86/fpu: Ensure XFD state on signal delivery (CVE-2025-68171)

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

    ftrace: Fix softlockup in ftrace_module_enable (CVE-2025-68173)

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

    nfs4_setup_readdir(): insufficient locking for ->d_parent->d_inode dereferencing (CVE-2025-68185)

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

    udp_tunnel: use netdev_warn() instead of netdev_WARN() (CVE-2025-68191)

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

    bpf: Add bpf_prog_run_data_pointers() (CVE-2025-68200)

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

    timers: Fix NULL function pointer race in timer_shutdown_sync() (CVE-2025-68214)

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

    scsi: core: Fix a regression triggered by scsi_host_busy() (CVE-2025-68224)

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

    mptcp: Fix proto fallback detection with BPF (CVE-2025-68227)

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

    scsi: target: tcm_loop: Fix segfault in tcm_loop_tpg_address_show() (CVE-2025-68229)

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

    mm/mempool: fix poisoning order>0 pages with HIGHMEM (CVE-2025-68231)

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

    ipv4: route: Prevent rt_bind_exception() from rebinding stale fnhe (CVE-2025-68241)

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

    drm/i915: Avoid lock inversion when pinning to GGTT on CHV/BXT+VTD (CVE-2025-68244)

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

    libceph: replace BUG_ON with bounds check for map->max_osd (CVE-2025-68283)

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

    libceph: prevent potential out-of-bounds writes in handle_auth_session_key() (CVE-2025-68284)

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

    libceph: fix potential use-after-free in have_mon_and_osd_map() (CVE-2025-68285)

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

    usb: dwc3: Fix race condition between concurrent dwc3_remove_requests() call paths (CVE-2025-68287)

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

    usb: storage: Fix memory leak in USB bulk transport (CVE-2025-68288)

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

    smb: client: fix memory leak in cifs_construct_tcon() (CVE-2025-68295)

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

    page_pool: always add GFP_NOWARN for ATOMIC allocations (CVE-2025-68321)

Tenable has extracted the preceding description block directly from the tested product security advisory.

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

The version of kernel installed on the remote host is prior to 5.15.197-138.220. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.15-2025-096 advisory.

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

    netfilter: nf_tables: reject duplicate device on updates (CVE-2025-38678)

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

    mm/ksm: fix flag-dropping behavior in ksm_madvise (CVE-2025-40040)

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

    net/sched: sch_qfq: Fix null-deref in agg_dequeue (CVE-2025-40083)

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

    ACPI: video: Fix use-after-free in acpi_video_switch_brightness() (CVE-2025-40211)

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

    vsock: Ignore signal/timeout on connect() if already established (CVE-2025-40248)

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

    net: openvswitch: remove never-working support for setting nsh fields (CVE-2025-40254)

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

    mptcp: fix a race in mptcp_pm_del_add_timer() (CVE-2025-40257)

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

    mptcp: fix race condition in mptcp_schedule_work() (CVE-2025-40258)

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

    scsi: sg: Do not sleep in atomic context (CVE-2025-40259)

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

    be2net: pass wrb_params in case of OS2BMC (CVE-2025-40264)

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

    fs/proc: fix uaf in proc_readdir_de() (CVE-2025-40271)

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

    mm/secretmem: fix use-after-free race in fault handler (CVE-2025-40272)

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

    NFSD: free copynotify stateid in nfs4_free_ol_stateid() (CVE-2025-40273)

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

    net: sched: act_connmark: initialize struct tc_ife to fix kernel leak (CVE-2025-40279)

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

    sctp: prevent possible shift-out-of-bounds in sctp_transport_update_rto (CVE-2025-40281)

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

    fbdev: Add bounds checking in bit_putcs to fix vmalloc-out-of-bounds (CVE-2025-40304)

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

    ntfs3: pretend $Extend records as regular files (CVE-2025-40313)

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

    bpf: Sync pending IRQ work before freeing ring buffer (CVE-2025-40319)

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

    fbdev: bitblit: bound-check glyph index in bit_putcs* (CVE-2025-40322)

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

    NFSD: Fix crash in nfsd4_read_release() (CVE-2025-40324)

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

    sctp: Prevent TOCTOU out-of-bounds write (CVE-2025-40331)

Tenable has extracted the preceding description block directly from the tested product security advisory.

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

The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4404 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-4404-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                        Ben Hutchings     December 12, 2025                             https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : linux     Version        : 5.10.247-1     CVE ID         : CVE-2023-53498 CVE-2024-47666 CVE-2024-50143 CVE-2024-57947                      CVE-2025-21861 CVE-2025-21887 CVE-2025-22058 CVE-2025-23143                      CVE-2025-38678 CVE-2025-39866 CVE-2025-39869 CVE-2025-39876                      CVE-2025-39883 CVE-2025-39885 CVE-2025-39907 CVE-2025-39911                      CVE-2025-39913 CVE-2025-39923 CVE-2025-39937 CVE-2025-39945                      CVE-2025-39949 CVE-2025-39951 CVE-2025-39953 CVE-2025-39955                      CVE-2025-39964 CVE-2025-39967 CVE-2025-39968 CVE-2025-39969                      CVE-2025-39970 CVE-2025-39971 CVE-2025-39972 CVE-2025-39973                      CVE-2025-39980 CVE-2025-39985 CVE-2025-39986 CVE-2025-39987                      CVE-2025-39993 CVE-2025-39994 CVE-2025-39995 CVE-2025-39996                      CVE-2025-39998 CVE-2025-40001 CVE-2025-40006 CVE-2025-40011                      CVE-2025-40018 CVE-2025-40019 CVE-2025-40020 CVE-2025-40021                      CVE-2025-40022 CVE-2025-40026 CVE-2025-40027 CVE-2025-40029                      CVE-2025-40030 CVE-2025-40035 CVE-2025-40042 CVE-2025-40044                      CVE-2025-40048 CVE-2025-40049 CVE-2025-40053 CVE-2025-40055                      CVE-2025-40070 CVE-2025-40078 CVE-2025-40081 CVE-2025-40083                      CVE-2025-40087 CVE-2025-40088 CVE-2025-40105 CVE-2025-40106                      CVE-2025-40109 CVE-2025-40111 CVE-2025-40115 CVE-2025-40116                      CVE-2025-40118 CVE-2025-40121 CVE-2025-40125 CVE-2025-40127                      CVE-2025-40134 CVE-2025-40140 CVE-2025-40153 CVE-2025-40154                      CVE-2025-40167 CVE-2025-40173 CVE-2025-40178 CVE-2025-40183                      CVE-2025-40186 CVE-2025-40187 CVE-2025-40188 CVE-2025-40190                      CVE-2025-40194 CVE-2025-40197 CVE-2025-40198 CVE-2025-40200                      CVE-2025-40204 CVE-2025-40205 CVE-2025-40211 CVE-2025-40219                      CVE-2025-40220 CVE-2025-40223 CVE-2025-40231 CVE-2025-40233                      CVE-2025-40240 CVE-2025-40243 CVE-2025-40244 CVE-2025-40248                      CVE-2025-40254 CVE-2025-40257 CVE-2025-40258 CVE-2025-40259                      CVE-2025-40261 CVE-2025-40262 CVE-2025-40263 CVE-2025-40264                      CVE-2025-40269 CVE-2025-40271 CVE-2025-40273 CVE-2025-40275                      CVE-2025-40277 CVE-2025-40278 CVE-2025-40280 CVE-2025-40281                      CVE-2025-40282 CVE-2025-40283 CVE-2025-40304 CVE-2025-40306                      CVE-2025-40308 CVE-2025-40309 CVE-2025-40312 CVE-2025-40315                      CVE-2025-40317 CVE-2025-40319 CVE-2025-40321 CVE-2025-40322                      CVE-2025-40324 CVE-2025-40331 CVE-2025-40342     Debian Bug     : 1107479 1114557

    Several vulnerabilities have been discovered in the Linux kernel that     may lead to a privilege escalation, denial of service or information     leaks.

    For Debian 11 bullseye, these problems have been fixed in version     5.10.247-1.  This version additionally includes many more bug fixes     from stable updates 5.10.245-5.10.247.  The broken pktcdvd driver has     also been disabled.

    We recommend that you upgrade your linux packages.

    For the detailed security status of linux please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/linux

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS     Attachment:
    signature.asc     Description: PGP signature

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

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

An update of the linux package has been released.

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

  - mptcp: fix race condition in mptcp_schedule_work() syzbot reported use-after-free in mptcp_schedule_work()     [1] Issue here is that mptcp_schedule_work() schedules a work, then gets a refcount on sk->sk_refcnt if     the work was scheduled. This refcount will be released by mptcp_worker(). [A] if (schedule_work(...)) {     [B] sock_hold(sk); return true; } Problem is that mptcp_worker() can run immediately and complete before     [B] We need instead : sock_hold(sk); if (schedule_work(...)) return true; sock_put(sk); [1] refcount_t:
    addition on 0; use-after-free. WARNING: CPU: 1 PID: 29 at lib/refcount.c:25     refcount_warn_saturate+0xfa/0x1d0 lib/refcount.c:25 Call Trace: <TASK> __refcount_add     include/linux/refcount.h:-1 [inline] __refcount_inc include/linux/refcount.h:366 [inline] refcount_inc     include/linux/refcount.h:383 [inline] sock_hold include/net/sock.h:816 [inline]     mptcp_schedule_work+0x164/0x1a0 net/mptcp/protocol.c:943 mptcp_tout_timer+0x21/0xa0     net/mptcp/protocol.c:2316 call_timer_fn+0x17e/0x5f0 kernel/time/timer.c:1747 expire_timers     kernel/time/timer.c:1798 [inline] __run_timers kernel/time/timer.c:2372 [inline]
    __run_timer_base+0x648/0x970 kernel/time/timer.c:2384 run_timer_base kernel/time/timer.c:2393 [inline]     run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2403 handle_softirqs+0x22f/0x710 kernel/softirq.c:622
    __do_softirq kernel/softirq.c:656 [inline] run_ktimerd+0xcf/0x190 kernel/softirq.c:1138     smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160 kthread+0x711/0x8a0 kernel/kthread.c:463     ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30     arch/x86/entry/entry_64.S:245 (CVE-2025-40258)

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

ID	Name	Product	Family	Severity
282382	Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2025-1350)	Nessus	Amazon Linux Local Security Checks	high
281777	Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.15-2025-096 (ALASKERNEL-5.15-2025-096)	Nessus	Amazon Linux Local Security Checks	medium
278559	Debian dla-4404 : ata-modules-5.10.0-35-armmp-di - security update	Nessus	Debian Local Security Checks	high
278313	Photon OS 4.0: Linux PHSA-2025-4.0-0924	Nessus	PhotonOS Local Security Checks	medium
277507	Linux Distros Unpatched Vulnerability : CVE-2025-40258	Nessus	Misc.	high

Detections

Analytics

CVE-2025-40258

high

Tenable Plugins

high

medium

high

medium

high