In the Linux kernel, the following vulnerability has been resolved: netlink: avoid infinite retry looping in netlink_unicast() netlink_attachskb() checks for the socket's read memory allocation constraints. Firstly, it has: rmem < READ_ONCE(sk->sk_rcvbuf) to check if the just increased rmem value fits into the socket's receive buffer. If not, it proceeds and tries to wait for the memory under: rmem + skb->truesize > READ_ONCE(sk->sk_rcvbuf) The checks don't cover the case when skb->truesize + sk->sk_rmem_alloc is equal to sk->sk_rcvbuf. Thus the function neither successfully accepts these conditions, nor manages to reschedule the task - and is called in retry loop for indefinite time which is caught as: rcu: INFO: rcu_sched self-detected stall on CPU rcu: 0-....: (25999 ticks this GP) idle=ef2/1/0x4000000000000000 softirq=262269/262269 fqs=6212 (t=26000 jiffies g=230833 q=259957) NMI backtrace for cpu 0 CPU: 0 PID: 22 Comm: kauditd Not tainted 5.10.240 #68 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.17.0-4.fc42 04/01/2014 Call Trace: <IRQ> dump_stack lib/dump_stack.c:120 nmi_cpu_backtrace.cold lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace lib/nmi_backtrace.c:62 rcu_dump_cpu_stacks kernel/rcu/tree_stall.h:335 rcu_sched_clock_irq.cold kernel/rcu/tree.c:2590 update_process_times kernel/time/timer.c:1953 tick_sched_handle kernel/time/tick-sched.c:227 tick_sched_timer kernel/time/tick-sched.c:1399 __hrtimer_run_queues kernel/time/hrtimer.c:1652 hrtimer_interrupt kernel/time/hrtimer.c:1717 __sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1113 asm_call_irq_on_stack arch/x86/entry/entry_64.S:808 </IRQ> netlink_attachskb net/netlink/af_netlink.c:1234 netlink_unicast net/netlink/af_netlink.c:1349 kauditd_send_queue kernel/audit.c:776 kauditd_thread kernel/audit.c:897 kthread kernel/kthread.c:328 ret_from_fork arch/x86/entry/entry_64.S:304 Restore the original behavior of the check which commit in Fixes accidentally missed when restructuring the code. Found by Linux Verification Center (linuxtesting.org).

An update of the linux package has been released.

The remote Debian 12 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-6009 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-6009-1                   security@debian.org     https://www.debian.org/security/                     Salvatore Bonaccorso     September 22, 2025                    https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : linux     CVE ID         : CVE-2024-47704 CVE-2024-57924 CVE-2024-58240 CVE-2025-23143                      CVE-2025-23160 CVE-2025-37931 CVE-2025-37968 CVE-2025-38322                      CVE-2025-38347 CVE-2025-38491 CVE-2025-38502 CVE-2025-38552                      CVE-2025-38614 CVE-2025-38670 CVE-2025-38676 CVE-2025-38677                      CVE-2025-38679 CVE-2025-38680 CVE-2025-38681 CVE-2025-38683                      CVE-2025-38684 CVE-2025-38685 CVE-2025-38687 CVE-2025-38691                      CVE-2025-38693 CVE-2025-38694 CVE-2025-38695 CVE-2025-38696                      CVE-2025-38697 CVE-2025-38698 CVE-2025-38699 CVE-2025-38700                      CVE-2025-38701 CVE-2025-38702 CVE-2025-38706 CVE-2025-38707                      CVE-2025-38708 CVE-2025-38711 CVE-2025-38712 CVE-2025-38713                      CVE-2025-38714 CVE-2025-38715 CVE-2025-38721 CVE-2025-38723                      CVE-2025-38724 CVE-2025-38725 CVE-2025-38727 CVE-2025-38728                      CVE-2025-38729 CVE-2025-38732 CVE-2025-38735 CVE-2025-38736                      CVE-2025-39673 CVE-2025-39675 CVE-2025-39676 CVE-2025-39681                      CVE-2025-39682 CVE-2025-39683 CVE-2025-39684 CVE-2025-39685                      CVE-2025-39686 CVE-2025-39687 CVE-2025-39689 CVE-2025-39691                      CVE-2025-39692 CVE-2025-39693 CVE-2025-39694 CVE-2025-39697                      CVE-2025-39701 CVE-2025-39702 CVE-2025-39703 CVE-2025-39706                      CVE-2025-39709 CVE-2025-39710 CVE-2025-39713 CVE-2025-39714                      CVE-2025-39715 CVE-2025-39716 CVE-2025-39718 CVE-2025-39719                      CVE-2025-39724 CVE-2025-39736 CVE-2025-39737 CVE-2025-39738                      CVE-2025-39742 CVE-2025-39743 CVE-2025-39749 CVE-2025-39751                      CVE-2025-39752 CVE-2025-39756 CVE-2025-39757 CVE-2025-39759                      CVE-2025-39760 CVE-2025-39766 CVE-2025-39770 CVE-2025-39772                      CVE-2025-39773 CVE-2025-39776 CVE-2025-39782 CVE-2025-39783                      CVE-2025-39787 CVE-2025-39788 CVE-2025-39790 CVE-2025-39794                      CVE-2025-39795 CVE-2025-39798 CVE-2025-39800 CVE-2025-39801                      CVE-2025-39806 CVE-2025-39808 CVE-2025-39812 CVE-2025-39813                      CVE-2025-39817 CVE-2025-39819 CVE-2025-39823 CVE-2025-39824                      CVE-2025-39825 CVE-2025-39826 CVE-2025-39827 CVE-2025-39828                      CVE-2025-39835 CVE-2025-39838 CVE-2025-39839 CVE-2025-39841                      CVE-2025-39842 CVE-2025-39843 CVE-2025-39844 CVE-2025-39845                      CVE-2025-39846 CVE-2025-39847 CVE-2025-39848 CVE-2025-39849                      CVE-2025-39853 CVE-2025-39857 CVE-2025-39860 CVE-2025-39864                      CVE-2025-39865 CVE-2025-39866 CVE-2025-40300

    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 6.1.153-1.

    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.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2025-1170 advisory.

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

    jfs: fix array-index-out-of-bounds read in add_missing_indices (CVE-2025-38204)

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

    exfat: fix double free in delayed_free (CVE-2025-38206)

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

    x86/sev: Evict cache lines during SNP memory validation (CVE-2025-38560)

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

    netlink: avoid infinite retry looping in netlink_unicast() (CVE-2025-38727)

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.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2025-1169 advisory.

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

    smb: client: Avoid race in open_cached_dir with lease breaks (CVE-2025-37954)

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

    netfilter: nft_set_pipapo: prevent overflow in lookup table allocation (CVE-2025-38162)

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

    exfat: fix double free in delayed_free (CVE-2025-38206)

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

    xfrm: interface: fix use-after-free after changing collect_md xfrm interface (CVE-2025-38500)

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

    net/sched: Restrict conditions for adding duplicating netems to qdisc tree (CVE-2025-38553)

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

    x86/sev: Evict cache lines during SNP memory validation (CVE-2025-38560)

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

    perf/core: Prevent VMA split of buffer mappings (CVE-2025-38563)

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

    perf/core: Exit early on perf_mmap() fail (CVE-2025-38565)

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

    ipv6: reject malicious packets in ipv6_gso_segment() (CVE-2025-38572)

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

    ipv6: fix possible infinite loop in fib6_info_uses_dev() (CVE-2025-38587)

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

    ipv6: prevent infinite loop in rt6_nlmsg_size() (CVE-2025-38588)

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

    bpf, ktls: Fix data corruption when using bpf_msg_pop_data() in ktls (CVE-2025-38608)

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

    net/packet: fix a race in packet_set_ring() and packet_notifier() (CVE-2025-38617)

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

    vsock: Do not allow binding to VMADDR_PORT_ANY (CVE-2025-38618)

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

    net: drop UFO packets in udp_rcv_segment() (CVE-2025-38622)

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

    netfilter: xt_nfacct: don't assume acct name is null-terminated (CVE-2025-38639)

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

    net/mlx5: Check device memory pointer before usage (CVE-2025-38645)

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

    proc: use the same treatment to check proc_lseek as ones for proc_read_iter et.al (CVE-2025-38653)

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

    can: netlink: can_changelink(): fix NULL pointer deref of struct can_priv::do_set_mode (CVE-2025-38665)

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

    netlink: avoid infinite retry looping in netlink_unicast() (CVE-2025-38727)

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

    NFS: Fix filehandle bounds checking in nfs_fh_to_dentry() (CVE-2025-39730)

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

    Revert fs/ntfs3: Replace inode_trylock with inode_lock (CVE-2025-39734)

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

  - netlink: avoid infinite retry looping in netlink_unicast() netlink_attachskb() checks for the socket's     read memory allocation constraints. Firstly, it has: rmem < READ_ONCE(sk->sk_rcvbuf) to check if the just     increased rmem value fits into the socket's receive buffer. If not, it proceeds and tries to wait for the     memory under: rmem + skb->truesize > READ_ONCE(sk->sk_rcvbuf) The checks don't cover the case when     skb->truesize + sk->sk_rmem_alloc is equal to sk->sk_rcvbuf. Thus the function neither successfully     accepts these conditions, nor manages to reschedule the task - and is called in retry loop for indefinite     time which is caught as: rcu: INFO: rcu_sched self-detected stall on CPU rcu: 0-....: (25999 ticks this     GP) idle=ef2/1/0x4000000000000000 softirq=262269/262269 fqs=6212 (t=26000 jiffies g=230833 q=259957) NMI     backtrace for cpu 0 CPU: 0 PID: 22 Comm: kauditd Not tainted 5.10.240 #68 Hardware name: QEMU Standard PC     (i440FX + PIIX, 1996), BIOS 1.17.0-4.fc42 04/01/2014 Call Trace: <IRQ> dump_stack lib/dump_stack.c:120     nmi_cpu_backtrace.cold lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace lib/nmi_backtrace.c:62     rcu_dump_cpu_stacks kernel/rcu/tree_stall.h:335 rcu_sched_clock_irq.cold kernel/rcu/tree.c:2590     update_process_times kernel/time/timer.c:1953 tick_sched_handle kernel/time/tick-sched.c:227     tick_sched_timer kernel/time/tick-sched.c:1399 __hrtimer_run_queues kernel/time/hrtimer.c:1652     hrtimer_interrupt kernel/time/hrtimer.c:1717 __sysvec_apic_timer_interrupt     arch/x86/kernel/apic/apic.c:1113 asm_call_irq_on_stack arch/x86/entry/entry_64.S:808 </IRQ>     netlink_attachskb net/netlink/af_netlink.c:1234 netlink_unicast net/netlink/af_netlink.c:1349     kauditd_send_queue kernel/audit.c:776 kauditd_thread kernel/audit.c:897 kthread kernel/kthread.c:328     ret_from_fork arch/x86/entry/entry_64.S:304 Restore the original behavior of the check which commit in     Fixes accidentally missed when restructuring the code. Found by Linux Verification Center     (linuxtesting.org). (CVE-2025-38727)

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

The version of kernel installed on the remote host is prior to 5.15.189-131.211. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.15-2025-088 advisory.

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

    dma-buf/dma-resv: check if the new fence is really later (CVE-2022-49935)

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

    mptcp: do not queue data on closed subflows (CVE-2022-50070)

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

    netfilter: nft_set_pipapo: prevent overflow in lookup table allocation (CVE-2025-38162)

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

    fbdev: Fix do_register_framebuffer to prevent null-ptr-deref in fb_videomode_to_var (CVE-2025-38215)

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

    af_unix: Don't leave consecutive consumed OOB skbs. (CVE-2025-38236)

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

    bridge: mcast: Fix use-after-free during router port configuration (CVE-2025-38248)

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

    netlink: avoid infinite retry looping in netlink_unicast() (CVE-2025-38727)

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 5.4.296-217.428. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.4-2025-108 advisory.

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

    dma-buf/dma-resv: check if the new fence is really later (CVE-2022-49935)

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

    fbdev: Fix do_register_framebuffer to prevent null-ptr-deref in fb_videomode_to_var (CVE-2025-38215)

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

    netlink: avoid infinite retry looping in netlink_unicast() (CVE-2025-38727)

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 5.10.240-238.966. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.10-2025-103 advisory.

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

    dma-buf/dma-resv: check if the new fence is really later (CVE-2022-49935)

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

    cifs: fix small mempool leak in SMB2_negotiate() (CVE-2022-49938)

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

    mptcp: do not queue data on closed subflows (CVE-2022-50070)

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

    dma-buf: insert memory barrier before updating num_fences (CVE-2025-38095)

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

    netfilter: nft_set_pipapo: prevent overflow in lookup table allocation (CVE-2025-38162)

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

    fbdev: Fix do_register_framebuffer to prevent null-ptr-deref in fb_videomode_to_var (CVE-2025-38215)

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

    netlink: avoid infinite retry looping in netlink_unicast() (CVE-2025-38727)

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
266289	Photon OS 5.0: Linux PHSA-2025-5.0-0630	Nessus	PhotonOS Local Security Checks	medium
265709	Debian dsa-6009 : affs-modules-6.1.0-37-4kc-malta-di - security update	Nessus	Debian Local Security Checks	medium
265433	Photon OS 4.0: Linux PHSA-2025-4.0-0864	Nessus	PhotonOS Local Security Checks	high
261756	Amazon Linux 2023 : bpftool6.12, kernel6.12, kernel6.12-devel (ALAS2023-2025-1170)	Nessus	Amazon Linux Local Security Checks	high
261737	Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2025-1169)	Nessus	Amazon Linux Local Security Checks	high
261574	Linux Distros Unpatched Vulnerability : CVE-2025-38727	Nessus	Misc.	medium
261436	Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.15-2025-088 (ALASKERNEL-5.15-2025-088)	Nessus	Amazon Linux Local Security Checks	high
261435	Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.4-2025-108 (ALASKERNEL-5.4-2025-108)	Nessus	Amazon Linux Local Security Checks	medium
261434	Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.10-2025-103 (ALASKERNEL-5.10-2025-103)	Nessus	Amazon Linux Local Security Checks	medium

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