In the Linux kernel, the following vulnerability has been resolved: net_sched: ets: Fix double list add in class with netem as child qdisc As described in Gerrard's report [1], there are use cases where a netem child qdisc will make the parent qdisc's enqueue callback reentrant. In the case of ets, there won't be a UAF, but the code will add the same classifier to the list twice, which will cause memory corruption. In addition to checking for qlen being zero, this patch checks whether the class was already added to the active_list (cl_is_active) before doing the addition to cater for the reentrant case. [1] https://lore.kernel.org/netdev/CAHcdcOm+03OD2j6R0=YHKqmy=VgJ8xEOKuP6c7mSgnp-TEJJbw@mail.gmail.com/

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2025-994 advisory.

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

    btrfs: do proper folio cleanup when cow_file_range() failed (CVE-2024-57976)

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

    kernel: be more careful about dup_mmap() failures and uprobe registering (CVE-2025-21709)

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

    block: fix queue freeze vs limits lock order in sysfs store methods (CVE-2025-21807)

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

    block: mark GFP_NOIO around sysfs ->store() (CVE-2025-21817)

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

    iommu/vt-d: Avoid use of NULL after WARN_ON_ONCE (CVE-2025-21833)

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

    net: better track kernel sockets lifetime (CVE-2025-21884)

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

    bnxt_en: Mask the bd_cnt field in the TX BD properly (CVE-2025-22108)

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

    net_sched: ets: Fix double list add in class with netem as child qdisc (CVE-2025-37914)

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 5.15.184-125.190. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.15-2025-073 advisory.

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

    scsi: target: Fix WRITE_SAME No Data Buffer crash

    In newer version of the SBC specs, we have a NDOB bit that indicates thereis no data buffer that gets     written out. If this bit is set using commandslike sg_write_same --ndob we will crash in     target_core_iblock/file'sexecute_write_same handlers when we go to access the se_cmd->t_data_sgbecause its     NULL.

    This patch adds a check for the NDOB bit in the common WRITE SAME codebecause we don't support it. And, it     adds a check for zero SG elements ineach handler in case the initiator tries to send a normal WRITE SAME     withno data buffer. (CVE-2022-21546)

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

    drm/i915/gt: Cleanup partial engine discovery failures (CVE-2022-48893)

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

    cifs: Fix UAF in cifs_demultiplex_thread() (CVE-2023-52572)

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

    bpf: Check rcu_read_lock_trace_held() before calling bpf map helpers (CVE-2023-52621)

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

    smb: client: fix use-after-free bug in cifs_debug_data_proc_show() (CVE-2023-52752)

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

    smb: client: fix potential deadlock when releasing mids (CVE-2023-52757)

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

    fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats (CVE-2024-26686)

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

    net/sched: act_mirred: don't override retval if we already lost the skb (CVE-2024-26739)

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

    smb: client: fix potential UAF in cifs_dump_full_key() (CVE-2024-35866)

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

    smb: client: fix potential UAF in cifs_stats_proc_show() (CVE-2024-35867)

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

    blk-iocost: do not WARN if iocg was already offlined (CVE-2024-36908)

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

    of: module: add buffer overflow check in of_modalias() (CVE-2024-38541)

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

    smb/server: fix potential null-ptr-deref of lease_ctx_info in smb2_open() (CVE-2024-46742)

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

    net: mana: Fix error handling in mana_create_txq/rxq's NAPI cleanup (CVE-2024-46784)

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

    smb: client: fix UAF in async decryption (CVE-2024-50047)

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

    net: fix crash when config small gso_max_size/gso_ipv4_max_size (CVE-2024-50258)

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

    filemap: Fix bounds checking in filemap_read() (CVE-2024-50272)

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

    dm cache: fix flushing uninitialized delayed_work on cache_ctr error (CVE-2024-50280)

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

    sched/task_stack: fix object_is_on_stack() for KASAN tagged pointers (CVE-2024-53128)

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

    wifi: ath10k: avoid NULL pointer error during sdio remove (CVE-2024-56599)

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

    ipv6: release nexthop on device removal

    The CI is hitting some aperiodic hangup at device removal time in thepmtu.sh self-test:

    unregister_netdevice: waiting for veth_A-R1 to become free. Usage count = 6ref_tracker:
    veth_A-R1@ffff888013df15d8 has 1/5 users atdst_init+0x84/0x4a0dst_alloc+0x97/0x150ip6_dst_alloc+0x23/0x90i     p6_rt_pcpu_alloc+0x1e6/0x520ip6_pol_route+0x56f/0x840fib6_rule_lookup+0x334/0x630ip6_route_output_flags+0x     259/0x480ip6_dst_lookup_tail.constprop.0+0x5c2/0x940ip6_dst_lookup_flow+0x88/0x190udp_tunnel6_dst_lookup+0     x2a7/0x4c0vxlan_xmit_one+0xbde/0x4a50 [vxlan]vxlan_xmit+0x9ad/0xf20 [vxlan]dev_hard_start_xmit+0x10e/0x360
    __dev_queue_xmit+0xf95/0x18c0arp_solicit+0x4a2/0xe00neigh_probe+0xaa/0xf0

    While the first suspect is the dst_cache, explicitly tracking the dstowing the last device reference via     probes proved such dst is held bythe nexthop in the originating fib6_info.

    Similar to commit f5b51fe804ec (ipv6: route: purge exception onremoval), we need to explicitly release     the originating fib info whendisconnecting a to-be-removed device from a live ipv6 dst: move thefib6_info     cleanup into ip6_dst_ifdown().

    Tested running:

    ./pmtu.sh cleanup_ipv6_exception

    in a tight loop for more than 400 iterations with no spat, running anunpatched kernel  I observed a splat     every ~10 iterations. (CVE-2024-56751)

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

    bpf: avoid holding freeze_mutex during mmap operation (CVE-2025-21853)

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

    nvme-tcp: fix potential memory corruption in nvme_tcp_recv_pdu() (CVE-2025-21927)

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

    net_sched: ets: Fix double list add in class with netem as child qdisc (CVE-2025-37914)

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 12 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-5925 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-5925-1                   security@debian.org     https://www.debian.org/security/                     Salvatore Bonaccorso     May 24, 2025                          https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : linux     CVE ID         : CVE-2024-26618 CVE-2024-26783 CVE-2024-26807 CVE-2024-28956                      CVE-2024-35790 CVE-2024-36903 CVE-2024-36927 CVE-2024-43840                      CVE-2024-46751 CVE-2024-53203 CVE-2024-53209 CVE-2024-57945                      CVE-2025-21645 CVE-2025-21839 CVE-2025-21931 CVE-2025-22062                      CVE-2025-37819 CVE-2025-37890 CVE-2025-37897 CVE-2025-37901                      CVE-2025-37902 CVE-2025-37903 CVE-2025-37905 CVE-2025-37909                      CVE-2025-37911 CVE-2025-37912 CVE-2025-37913 CVE-2025-37914                      CVE-2025-37915 CVE-2025-37917 CVE-2025-37921 CVE-2025-37923                      CVE-2025-37924 CVE-2025-37927 CVE-2025-37928 CVE-2025-37929                      CVE-2025-37930 CVE-2025-37932 CVE-2025-37936 CVE-2025-37947                      CVE-2025-37948 CVE-2025-37949 CVE-2025-37951 CVE-2025-37953                      CVE-2025-37959 CVE-2025-37961 CVE-2025-37962 CVE-2025-37963                      CVE-2025-37964 CVE-2025-37967 CVE-2025-37969 CVE-2025-37970                      CVE-2025-37972 CVE-2025-37990 CVE-2025-37991

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

    For CPUs affected to ITS (Indirect Target Selection), to fully mitigate     the vulnerability it is also necessary to update the intel-microcode     packages released in DSA 5924-1.

    For details on the Indirect Target Selection (ITS) vulnerability please     refer to https://www.vusec.net/projects/training-solo/ and     https://www.intel.com/content/www/us/en/developer/articles/technical/software-security-guidance/advisory-     guidance/indirect-target-selection.html .

    For the stable distribution (bookworm), these problems have been fixed in     version 6.1.140-1.

    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.

ID	Name	Product	Family	Severity
238280	Amazon Linux 2023 : bpftool, kernel6.12, kernel6.12-modules-extra (ALAS2023-2025-994)	Nessus	Amazon Linux Local Security Checks	medium
238031	Amazon Linux 2 : kernel (ALASKERNEL-5.15-2025-073)	Nessus	Amazon Linux Local Security Checks	high
237223	Debian dsa-5925 : affs-modules-6.1.0-33-4kc-malta-di - security update	Nessus	Debian Local Security Checks	medium

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