In the Linux kernel, the following vulnerability has been resolved: pNFS: Fix uninited ptr deref in block/scsi layout The error occurs on the third attempt to encode extents. When function ext_tree_prepare_commit() reallocates a larger buffer to retry encoding extents, the "layoutupdate_pages" page array is initialized only after the retry loop. But ext_tree_free_commitdata() is called on every iteration and tries to put pages in the array, thus dereferencing uninitialized pointers. An additional problem is that there is no limit on the maximum possible buffer_size. When there are too many extents, the client may create a layoutcommit that is larger than the maximum possible RPC size accepted by the server. During testing, we observed two typical scenarios. First, one memory page for extents is enough when we work with small files, append data to the end of the file, or preallocate extents before writing. But when we fill a new large file without preallocating, the number of extents can be huge, and counting the number of written extents in ext_tree_encode_commit() does not help much. Since this number increases even more between unlocking and locking of ext_tree, the reallocated buffer may not be large enough again and again.

An update of the linux package has been released.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2025-1208 advisory.

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

    net: fix NULL pointer dereference in l3mdev_l3_rcv (CVE-2025-22103)

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

    ext4: avoid journaling sb update on error if journal is destroying (CVE-2025-22113)

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

    md/md-bitmap: fix wrong bitmap_limit for clustermd when write sb (CVE-2025-22124)

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

    md/raid1,raid10: don't ignore IO flags (CVE-2025-22125)

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

    io_uring/msg_ring: ensure io_kiocb freeing is deferred for RCU (CVE-2025-38453)

    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:

    bpf: Fix oob access in cgroup local storage (CVE-2025-38502)

    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:

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

    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:

    sunrpc: fix handling of server side tls alerts (CVE-2025-38566)

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

    net/sched: mqprio: fix stack out-of-bounds write in tc entry parsing (CVE-2025-38568)

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

    sunrpc: fix client side handling of tls alerts (CVE-2025-38571)

    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:

    bpf, arm64: Fix fp initialization for exception boundary (CVE-2025-38586)

    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:

    net/mlx5e: Remove skb secpath if xfrm state is not found (CVE-2025-38590)

    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:

    eventpoll: Fix semi-unbounded recursion (CVE-2025-38614)

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

    fs/ntfs3: cancle set bad inode after removing name fails (CVE-2025-38615)

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

    tls: handle data disappearing from under the TLS ULP (CVE-2025-38616)

    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:

    pinmux: fix race causing mux_owner NULL with active mux_usecount (CVE-2025-38632)

    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:

    bpf: Disable migration in nf_hook_run_bpf(). (CVE-2025-38640)

    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:

    [ceph] parse_longname(): strrchr() expects NUL-terminated string (CVE-2025-38660)

    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:

    arm64/entry: Mask DAIF in cpu_switch_to(), call_on_irq_stack() (CVE-2025-38670)

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

    xfrm: state: initialize state_ptrs earlier in xfrm_state_find (CVE-2025-38675)

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

    iommu/amd: Avoid stack buffer overflow from kernel cmdline (CVE-2025-38676)

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

    mm/ptdump: take the memory hotplug lock inside ptdump_walk_pgd() (CVE-2025-38681)

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

    hv_netvsc: Fix panic during namespace deletion with VF (CVE-2025-38683)

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

    fbdev: Fix vmalloc out-of-bounds write in fast_imageblit (CVE-2025-38685)

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

    userfaultfd: fix a crash in UFFDIO_MOVE when PMD is a migration entry (CVE-2025-38686)

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

    pNFS: Fix uninited ptr deref in block/scsi layout (CVE-2025-38691)

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

    exfat: add cluster chain loop check for dir (CVE-2025-38692)

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

    scsi: libiscsi: Initialize iscsi_conn->dd_data only if memory is allocated (CVE-2025-38700)

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

    ext4: do not BUG when INLINE_DATA_FL lacks system.data xattr (CVE-2025-38701)

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

    fbdev: fix potential buffer overflow in do_register_framebuffer() (CVE-2025-38702)

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

    rcu/nocb: Fix possible invalid rdp's->nocb_cb_kthread pointer access (CVE-2025-38704)

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

    fs/ntfs3: Add sanity check for file name (CVE-2025-38707)

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

    drbd: add missing kref_get in handle_write_conflicts (CVE-2025-38708)

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

    loop: Avoid updating block size under exclusive owner (CVE-2025-38709)

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

    net: kcm: Fix race condition in kcm_unattach() (CVE-2025-38717)

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

    sctp: linearize cloned gso packets in sctp_rcv (CVE-2025-38718)

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

    netfilter: ctnetlink: fix refcount leak on table dump (CVE-2025-38721)

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

    nfsd: handle get_client_locked() failure in nfsd4_setclientid_confirm() (CVE-2025-38724)

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

    smb3: fix for slab out of bounds on mount to ksmbd (CVE-2025-38728)

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

    io_uring/net: commit partial buffers on retry (CVE-2025-38730)

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

    netfilter: nf_reject: don't leak dst refcount for loopback packets (CVE-2025-38732)

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

    cifs: Fix oops due to uninitialised variable (CVE-2025-38737)

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

    net/sched: Fix backlog accounting in qdisc_dequeue_internal (CVE-2025-39677)

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

    x86/cpu/hygon: Add missing resctrl_cpu_detect() in bsp_init helper (CVE-2025-39681)

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

    tls: fix handling of zero-length records on the rx_list (CVE-2025-39682)

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

    tracing: Limit access to parser->buffer when trace_get_user failed (CVE-2025-39683)

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

    ftrace: Also allocate and copy hash for reading of filter files (CVE-2025-39689)

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

    fs/buffer: fix use-after-free when call bh_read() helper (CVE-2025-39691)

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

    NFS: Fix a race when updating an existing write (CVE-2025-39697)

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

    io_uring/futex: ensure io_futex_wait() cleans up properly on failure (CVE-2025-39698)

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

    mm/damon/ops-common: ignore migration request to invalid nodes (CVE-2025-39700)

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

    ipv6: sr: Fix MAC comparison to be constant-time (CVE-2025-39702)

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

    vsock/virtio: Validate length in packet header before skb_put() (CVE-2025-39718)

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

    netfs: Fix unbuffered write error handling (CVE-2025-39723)

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

    serial: 8250: fix panic due to PSLVERR (CVE-2025-39724)

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

    mm/vmscan: fix hwpoisoned large folio handling in shrink_folio_list (CVE-2025-39725)

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

    mm: swap: fix potential buffer overflow in setup_clusters() (CVE-2025-39727)

    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)

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

    btrfs: do not allow relocation of partially dropped subvolumes (CVE-2025-39738)

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

    rcu: Fix rcu_read_unlock() deadloop due to IRQ work (CVE-2025-39744)

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

    bpf: Forget ranges when refining tnum after JSET (CVE-2025-39748)

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

    rcu: Protect ->defer_qs_iw_pending from data race (CVE-2025-39749)

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

    mm/smaps: fix race between smaps_hugetlb_range and migration (CVE-2025-39754)

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

    fs: Prevent file descriptor table allocations exceeding INT_MAX (CVE-2025-39756)

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

    btrfs: qgroup: fix race between quota disable and quota rescan ioctl (CVE-2025-39759)

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

    usb: core: config: Prevent OOB read in SS endpoint companion parsing (CVE-2025-39760)

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

    ACPI: APEI: send SIGBUS to current task if synchronous memory error not recovered (CVE-2025-39763)

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

    net/sched: Make cake_enqueue return NET_XMIT_CN when past buffer_limit (CVE-2025-39766)

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

    net: gso: Forbid IPv6 TSO with extensions on devices with only IPV6_CSUM (CVE-2025-39770)

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

    net: bridge: fix soft lockup in br_multicast_query_expired() (CVE-2025-39773)

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

    btrfs: subpage: keep TOWRITE tag until folio is cleaned (CVE-2025-39779)

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

    sched/ext: Fix invalid task state transitions on class switch (CVE-2025-39780)

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

    jbd2: prevent softlockup in jbd2_log_do_checkpoint() (CVE-2025-39782)

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

    PCI: endpoint: Fix configfs group list head handling (CVE-2025-39783)

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

    dm: dm-crypt: Do not partially accept write BIOs with zoned targets (CVE-2025-39791)

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

    dm: Always split write BIOs to zoned device limits (CVE-2025-39792)

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

    block: avoid possible overflow for chunk_sectors check in blk_stack_limits() (CVE-2025-39795)

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

    xfrm: Duplicate SPI Handling (CVE-2025-39797)

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

    NFS: Fix the setting of capabilities when automounting a new filesystem (CVE-2025-39798)

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

    btrfs: abort transaction on unexpected eb generation at btrfs_copy_root() (CVE-2025-39800)

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

    HID: multitouch: fix slab out-of-bounds access in mt_report_fixup() (CVE-2025-39806)

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

    sctp: initialize more fields in sctp_v6_from_sk() (CVE-2025-39812)

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

    ftrace: Fix potential warning in trace_printk_seq during ftrace_dump (CVE-2025-39813)

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

    efivarfs: Fix slab-out-of-bounds in efivarfs_d_compare (CVE-2025-39817)

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

    fs/smb: Fix inconsistent refcnt update (CVE-2025-39819)

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

    KVM: x86: use array_index_nospec with indices that come from guest (CVE-2025-39823)

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

    HID: asus: fix UAF via HID_CLAIMED_INPUT validation (CVE-2025-39824)

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

    smb: client: fix race with concurrent opens in rename(2) (CVE-2025-39825)

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

    trace/fgraph: Fix the warning caused by missing unregister notifier (CVE-2025-39829)

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

    net/mlx5: Fix lockdep assertion on sync reset unload event (CVE-2025-39832)

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

    xfs: do not propagate ENODATA disk errors into xattr code (CVE-2025-39835)

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

    mm: slub: avoid wake up kswapd in set_track_prepare (CVE-2025-39843)

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

    mm: move page table sync declarations to linux/pgtable.h (CVE-2025-39844)

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

    x86/mm/64: define ARCH_PAGE_TABLE_SYNC_MASK and arch_sync_kernel_mappings() (CVE-2025-39845)

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

    net/tcp: Fix socket memory leak in TCP-AO failure handling for IPv6 (CVE-2025-39852)

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-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.

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

  - pNFS: Fix uninited ptr deref in block/scsi layout The error occurs on the third attempt to encode extents.
    When function ext_tree_prepare_commit() reallocates a larger buffer to retry encoding extents, the     layoutupdate_pages page array is initialized only after the retry loop. But ext_tree_free_commitdata()     is called on every iteration and tries to put pages in the array, thus dereferencing uninitialized     pointers. An additional problem is that there is no limit on the maximum possible buffer_size. When there     are too many extents, the client may create a layoutcommit that is larger than the maximum possible RPC     size accepted by the server. During testing, we observed two typical scenarios. First, one memory page for     extents is enough when we work with small files, append data to the end of the file, or preallocate     extents before writing. But when we fill a new large file without preallocating, the number of extents can     be huge, and counting the number of written extents in ext_tree_encode_commit() does not help much. Since     this number increases even more between unlocking and locking of ext_tree, the reallocated buffer may not     be large enough again and again. (CVE-2025-38691)

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

ID	Name	Product	Family	Severity
266289	Photon OS 5.0: Linux PHSA-2025-5.0-0630	Nessus	PhotonOS Local Security Checks	high
266176	Amazon Linux 2023 : bpftool6.12, kernel6.12, kernel6.12-devel (ALAS2023-2025-1208)	Nessus	Amazon Linux Local Security Checks	high
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
261584	Linux Distros Unpatched Vulnerability : CVE-2025-38691	Nessus	Misc.	medium

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