In the Linux kernel, the following vulnerability has been resolved: futex: Prevent use-after-free during requeue-PI syzbot managed to trigger the following race: T1 T2 futex_wait_requeue_pi() futex_do_wait() schedule() futex_requeue() futex_proxy_trylock_atomic() futex_requeue_pi_prepare() requeue_pi_wake_futex() futex_requeue_pi_complete() /* preempt */ * timeout/ signal wakes T1 * futex_requeue_pi_wakeup_sync() // Q_REQUEUE_PI_LOCKED futex_hash_put() // back to userland, on stack futex_q is garbage /* back */ wake_up_state(q->task, TASK_NORMAL); In this scenario futex_wait_requeue_pi() is able to leave without using futex_q::lock_ptr for synchronization. This can be prevented by reading futex_q::task before updating the futex_q::requeue_state. A reference on the task_struct is not needed because requeue_pi_wake_futex() is invoked with a spinlock_t held which implies a RCU read section. Even if T1 terminates immediately after, the task_struct will remain valid during T2's wake_up_state(). A READ_ONCE on futex_q::task before futex_requeue_pi_complete() is enough because it ensures that the variable is read before the state is updated. Read futex_q::task before updating the requeue state, use it for the following wakeup.

The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4379 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-4379-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                        Ben Hutchings     November 25, 2025                             https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : linux-6.1     Version        : 6.1.158-1~deb11u1     CVE ID         : CVE-2025-21861 CVE-2025-39929 CVE-2025-39931 CVE-2025-39934                      CVE-2025-39937 CVE-2025-39938 CVE-2025-39942 CVE-2025-39943                      CVE-2025-39944 CVE-2025-39945 CVE-2025-39946 CVE-2025-39949                      CVE-2025-39951 CVE-2025-39953 CVE-2025-39955 CVE-2025-39957                      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-2025-39977 CVE-2025-39978 CVE-2025-39980 CVE-2025-39982                      CVE-2025-39985 CVE-2025-39986 CVE-2025-39987 CVE-2025-39988                      CVE-2025-39993 CVE-2025-39994 CVE-2025-39995 CVE-2025-39996                      CVE-2025-39998 CVE-2025-40001 CVE-2025-40006 CVE-2025-40008                      CVE-2025-40010 CVE-2025-40011 CVE-2025-40013 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-2025-40032 CVE-2025-40035 CVE-2025-40036 CVE-2025-40040                      CVE-2025-40042 CVE-2025-40043 CVE-2025-40044 CVE-2025-40048                      CVE-2025-40049 CVE-2025-40051 CVE-2025-40053 CVE-2025-40055                      CVE-2025-40056 CVE-2025-40060 CVE-2025-40062 CVE-2025-40068                      CVE-2025-40070 CVE-2025-40078 CVE-2025-40080 CVE-2025-40081                      CVE-2025-40084 CVE-2025-40085 CVE-2025-40087 CVE-2025-40088                      CVE-2025-40092 CVE-2025-40093 CVE-2025-40094 CVE-2025-40095                      CVE-2025-40096 CVE-2025-40099 CVE-2025-40100 CVE-2025-40103                      CVE-2025-40104 CVE-2025-40105 CVE-2025-40106 CVE-2025-40107                      CVE-2025-40109 CVE-2025-40111 CVE-2025-40112 CVE-2025-40115                      CVE-2025-40116 CVE-2025-40118 CVE-2025-40120 CVE-2025-40121                      CVE-2025-40123 CVE-2025-40124 CVE-2025-40125 CVE-2025-40126                      CVE-2025-40127 CVE-2025-40134 CVE-2025-40140 CVE-2025-40141                      CVE-2025-40153 CVE-2025-40154 CVE-2025-40156 CVE-2025-40167                      CVE-2025-40171 CVE-2025-40173 CVE-2025-40176 CVE-2025-40178                      CVE-2025-40179 CVE-2025-40183 CVE-2025-40186 CVE-2025-40187                      CVE-2025-40188 CVE-2025-40190 CVE-2025-40193 CVE-2025-40194                      CVE-2025-40197 CVE-2025-40198 CVE-2025-40200 CVE-2025-40201                      CVE-2025-40202 CVE-2025-40204 CVE-2025-40205 CVE-2025-40207

    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     6.1.158-1~deb11u1.  This version additionally includes many more bug     fixes from stable updates 6.1.154-6.1.158.

    We recommend that you upgrade your linux-6.1 packages.

    For the detailed security status of linux-6.1 please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/linux-6.1

    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.

The remote Debian 12 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-6053 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-6053-1                   security@debian.org     https://www.debian.org/security/                     Salvatore Bonaccorso     November 11, 2025                     https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : linux     CVE ID         : CVE-2025-21861 CVE-2025-39929 CVE-2025-39931 CVE-2025-39934                      CVE-2025-39937 CVE-2025-39938 CVE-2025-39942 CVE-2025-39943                      CVE-2025-39944 CVE-2025-39945 CVE-2025-39946 CVE-2025-39949                      CVE-2025-39951 CVE-2025-39953 CVE-2025-39955 CVE-2025-39957                      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-2025-39977 CVE-2025-39978 CVE-2025-39980 CVE-2025-39982                      CVE-2025-39985 CVE-2025-39986 CVE-2025-39987 CVE-2025-39988                      CVE-2025-39993 CVE-2025-39994 CVE-2025-39995 CVE-2025-39996                      CVE-2025-39998 CVE-2025-40001 CVE-2025-40006 CVE-2025-40008                      CVE-2025-40010 CVE-2025-40011 CVE-2025-40013 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-2025-40032 CVE-2025-40035 CVE-2025-40036 CVE-2025-40040                      CVE-2025-40042 CVE-2025-40043 CVE-2025-40044 CVE-2025-40048                      CVE-2025-40049 CVE-2025-40051 CVE-2025-40053 CVE-2025-40055                      CVE-2025-40056 CVE-2025-40060 CVE-2025-40062 CVE-2025-40068                      CVE-2025-40070 CVE-2025-40078 CVE-2025-40080 CVE-2025-40081                      CVE-2025-40084 CVE-2025-40085 CVE-2025-40087 CVE-2025-40088                      CVE-2025-40092 CVE-2025-40093 CVE-2025-40094 CVE-2025-40095                      CVE-2025-40096 CVE-2025-40099 CVE-2025-40100 CVE-2025-40103                      CVE-2025-40104 CVE-2025-40105 CVE-2025-40106 CVE-2025-40107                      CVE-2025-40109

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

    For the oldstable distribution (bookworm), these problems have been fixed     in version 6.1.158-1.

    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 Security Advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://www.debian.org/security/

    Mailing list: debian-security-announce@lists.debian.org

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.

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

  - futex: Prevent use-after-free during requeue-PI syzbot managed to trigger the following race: T1 T2     futex_wait_requeue_pi() futex_do_wait() schedule() futex_requeue() futex_proxy_trylock_atomic()     futex_requeue_pi_prepare() requeue_pi_wake_futex() futex_requeue_pi_complete() /* preempt */ * timeout/     signal wakes T1 * futex_requeue_pi_wakeup_sync() // Q_REQUEUE_PI_LOCKED futex_hash_put() // back to     userland, on stack futex_q is garbage /* back */ wake_up_state(q->task, TASK_NORMAL); In this scenario     futex_wait_requeue_pi() is able to leave without using futex_q::lock_ptr for synchronization. This can be     prevented by reading futex_q::task before updating the futex_q::requeue_state. A reference on the     task_struct is not needed because requeue_pi_wake_futex() is invoked with a spinlock_t held which implies     a RCU read section. Even if T1 terminates immediately after, the task_struct will remain valid during T2's     wake_up_state(). A READ_ONCE on futex_q::task before futex_requeue_pi_complete() is enough because it     ensures that the variable is read before the state is updated. Read futex_q::task before updating the     requeue state, use it for the following wakeup. (CVE-2025-39977)

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

The remote Oracle Linux 10 / 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2025-20719 advisory.

    - io_uring/futex: ensure io_futex_wait() cleans up properly on failure (Jens Axboe)  [Orabug: 38572958]     {CVE-2025-39698}
    - fs: writeback: fix use-after-free in __mark_inode_dirty() (Jiufei Xue)  [Orabug: 38572953]     {CVE-2025-39866}
    - kernfs: Fix UAF in polling when open file is released (Chen Ridong)  [Orabug: 38572951]  {CVE-2025-3988}
    - vsock/virtio: Validate length in packet header before skb_put() (Will Deacon)  [Orabug: 38572950]     {CVE-2025-39718}
    - crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg (Herbert Xu)  [Orabug: 38572948]     {CVE-2025-39964}
    - io_uring: fix incorrect io_kiocb reference in io_link_skb (Yang Xiuwei)  [Orabug: 38572947]     {CVE-2025-39963}
    - xfrm: xfrm_alloc_spi shouldn't use 0 as SPI (Sabrina Dubroca)  [Orabug: 38572946]  {CVE-2025-39965}
    - tls: make sure to abort the stream if headers are bogus (Jakub Kicinski)  [Orabug: 38572944]     {CVE-2025-39946}
    - futex: Prevent use-after-free during requeue-PI (Sebastian Andrzej Siewior)  [Orabug: 38572943]     {CVE-2025-39977}

Tenable has extracted the preceding description block directly from the Oracle 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.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2025-1223 advisory.

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

    mm/damon/sysfs: fix use-after-free in state_show() (CVE-2025-39877)

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

    libceph: fix invalid accesses to ceph_connection_v1_info (CVE-2025-39880)

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

    kernfs: Fix UAF in polling when open file is released (CVE-2025-39881)

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

    mm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when unpoison memory (CVE-2025-39883)

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

    netfilter: br_netfilter: do not check confirmed bit in br_nf_local_in() after confirm (CVE-2025-39894)

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

    e1000e: fix heap overflow in e1000_set_eeprom (CVE-2025-39898)

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

    mm/slub: avoid accessing metadata when pointer is invalid in object_err() (CVE-2025-39902)

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

    mm/damon/lru_sort: avoid divide-by-zero in damon_lru_sort_apply_parameters() (CVE-2025-39909)

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

    tcp_bpf: Call sk_msg_free() when tcp_bpf_send_verdict() fails to allocate psock->cork. (CVE-2025-39913)

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

    tracing: Silence warning when chunk allocation fails in trace_pid_write (CVE-2025-39914)

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

    mm/damon/reclaim: avoid divide-by-zero in damon_reclaim_apply_parameters() (CVE-2025-39916)

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

    crypto: af_alg - Set merge to zero early in af_alg_sendmsg (CVE-2025-39931)

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

    tls: make sure to abort the stream if headers are bogus (CVE-2025-39946)

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

    cgroup: split cgroup_destroy_wq into 3 workqueues (CVE-2025-39953)

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

    tcp: Clear tcp_sk(sk)->fastopen_rsk in tcp_disconnect(). (CVE-2025-39955)

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

    crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg (CVE-2025-39964)

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

    fbcon: fix integer overflow in fbcon_do_set_font (CVE-2025-39967)

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

    futex: Prevent use-after-free during requeue-PI (CVE-2025-39977)

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

    nexthop: Forbid FDB status change while nexthop is in a group (CVE-2025-39980)

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

    tracing: dynevent: Add a missing lockdown check on dynevent (CVE-2025-40021)

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
276782	Debian dla-4379 : linux-config-6.1 - security update	Nessus	Debian Local Security Checks	medium
274816	Debian dsa-6053 : affs-modules-6.1.0-37-4kc-malta-di - security update	Nessus	Debian Local Security Checks	medium
271524	Linux Distros Unpatched Vulnerability : CVE-2025-39977	Nessus	Misc.	high
271415	Oracle Linux 10 / 9 : Unbreakable Enterprise kernel (ELSA-2025-20719)	Nessus	Oracle Linux Local Security Checks	high
270560	Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2025-1223)	Nessus	Amazon Linux Local Security Checks	high

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