In the Linux kernel, the following vulnerability has been resolved: btrfs: fix deadlock when cloning inline extents and using qgroups There are a few exceptional cases where cloning an inline extent needs to copy the inline extent data into a page of the destination inode. When this happens, we end up starting a transaction while having a dirty page for the destination inode and while having the range locked in the destination's inode iotree too. Because when reserving metadata space for a transaction we may need to flush existing delalloc in case there is not enough free space, we have a mechanism in place to prevent a deadlock, which was introduced in commit 3d45f221ce627d ("btrfs: fix deadlock when cloning inline extent and low on free metadata space"). However when using qgroups, a transaction also reserves metadata qgroup space, which can also result in flushing delalloc in case there is not enough available space at the moment. When this happens we deadlock, since flushing delalloc requires locking the file range in the inode's iotree and the range was already locked at the very beginning of the clone operation, before attempting to start the transaction. When this issue happens, stack traces like the following are reported: [72747.556262] task:kworker/u81:9 state:D stack: 0 pid: 225 ppid: 2 flags:0x00004000 [72747.556268] Workqueue: writeback wb_workfn (flush-btrfs-1142) [72747.556271] Call Trace: [72747.556273] __schedule+0x296/0x760 [72747.556277] schedule+0x3c/0xa0 [72747.556279] io_schedule+0x12/0x40 [72747.556284] __lock_page+0x13c/0x280 [72747.556287] ? generic_file_readonly_mmap+0x70/0x70 [72747.556325] extent_write_cache_pages+0x22a/0x440 [btrfs] [72747.556331] ? __set_page_dirty_nobuffers+0xe7/0x160 [72747.556358] ? set_extent_buffer_dirty+0x5e/0x80 [btrfs] [72747.556362] ? update_group_capacity+0x25/0x210 [72747.556366] ? cpumask_next_and+0x1a/0x20 [72747.556391] extent_writepages+0x44/0xa0 [btrfs] [72747.556394] do_writepages+0x41/0xd0 [72747.556398] __writeback_single_inode+0x39/0x2a0 [72747.556403] writeback_sb_inodes+0x1ea/0x440 [72747.556407] __writeback_inodes_wb+0x5f/0xc0 [72747.556410] wb_writeback+0x235/0x2b0 [72747.556414] ? get_nr_inodes+0x35/0x50 [72747.556417] wb_workfn+0x354/0x490 [72747.556420] ? newidle_balance+0x2c5/0x3e0 [72747.556424] process_one_work+0x1aa/0x340 [72747.556426] worker_thread+0x30/0x390 [72747.556429] ? create_worker+0x1a0/0x1a0 [72747.556432] kthread+0x116/0x130 [72747.556435] ? kthread_park+0x80/0x80 [72747.556438] ret_from_fork+0x1f/0x30 [72747.566958] Workqueue: btrfs-flush_delalloc btrfs_work_helper [btrfs] [72747.566961] Call Trace: [72747.566964] __schedule+0x296/0x760 [72747.566968] ? finish_wait+0x80/0x80 [72747.566970] schedule+0x3c/0xa0 [72747.566995] wait_extent_bit.constprop.68+0x13b/0x1c0 [btrfs] [72747.566999] ? finish_wait+0x80/0x80 [72747.567024] lock_extent_bits+0x37/0x90 [btrfs] [72747.567047] btrfs_invalidatepage+0x299/0x2c0 [btrfs] [72747.567051] ? find_get_pages_range_tag+0x2cd/0x380 [72747.567076] __extent_writepage+0x203/0x320 [btrfs] [72747.567102] extent_write_cache_pages+0x2bb/0x440 [btrfs] [72747.567106] ? update_load_avg+0x7e/0x5f0 [72747.567109] ? enqueue_entity+0xf4/0x6f0 [72747.567134] extent_writepages+0x44/0xa0 [btrfs] [72747.567137] ? enqueue_task_fair+0x93/0x6f0 [72747.567140] do_writepages+0x41/0xd0 [72747.567144] __filemap_fdatawrite_range+0xc7/0x100 [72747.567167] btrfs_run_delalloc_work+0x17/0x40 [btrfs] [72747.567195] btrfs_work_helper+0xc2/0x300 [btrfs] [72747.567200] process_one_work+0x1aa/0x340 [72747.567202] worker_thread+0x30/0x390 [72747.567205] ? create_worker+0x1a0/0x1a0 [72747.567208] kthread+0x116/0x130 [72747.567211] ? kthread_park+0x80/0x80 [72747.567214] ret_from_fork+0x1f/0x30 [72747.569686] task:fsstress state:D stack: ---truncated---

The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4327 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-4327-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                        Ben Hutchings     October 13, 2025                              https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : linux     Version        : 5.10.244-1     CVE ID         : CVE-2021-46987 CVE-2021-47037 CVE-2021-47070 CVE-2021-47076                      CVE-2021-47183 CVE-2021-47193 CVE-2021-47412 CVE-2021-47421                      CVE-2021-47455 CVE-2021-47498 CVE-2022-21546 CVE-2022-49063                      CVE-2022-50327 CVE-2023-52935 CVE-2023-53259 CVE-2024-26739                      CVE-2024-28956 CVE-2024-35790 CVE-2024-36350 CVE-2024-36357                      CVE-2024-38541 CVE-2024-43863 CVE-2024-46751 CVE-2024-46855                      CVE-2024-49935 CVE-2024-53203 CVE-2024-57883 CVE-2024-57996                      CVE-2025-21912 CVE-2025-37798 CVE-2025-37819 CVE-2025-37890                      CVE-2025-37909 CVE-2025-37913 CVE-2025-37914 CVE-2025-37915                      CVE-2025-37923 CVE-2025-37927 CVE-2025-37930 CVE-2025-37932                      CVE-2025-37948 CVE-2025-37949 CVE-2025-37958 CVE-2025-37963                      CVE-2025-37968 CVE-2025-37969 CVE-2025-37970 CVE-2025-37990                      CVE-2025-37992 CVE-2025-37994 CVE-2025-37995 CVE-2025-37997                      CVE-2025-37998 CVE-2025-38000 CVE-2025-38001 CVE-2025-38003                      CVE-2025-38004 CVE-2025-38005 CVE-2025-38009 CVE-2025-38023                      CVE-2025-38024 CVE-2025-38031 CVE-2025-38034 CVE-2025-38035                      CVE-2025-38037 CVE-2025-38044 CVE-2025-38051 CVE-2025-38052                      CVE-2025-38058 CVE-2025-38061 CVE-2025-38065 CVE-2025-38066                      CVE-2025-38067 CVE-2025-38072 CVE-2025-38074 CVE-2025-38075                      CVE-2025-38078 CVE-2025-38079 CVE-2025-38083 CVE-2025-38084                      CVE-2025-38085 CVE-2025-38086 CVE-2025-38090 CVE-2025-38094                      CVE-2025-38095 CVE-2025-38100 CVE-2025-38102 CVE-2025-38103                      CVE-2025-38107 CVE-2025-38108 CVE-2025-38111 CVE-2025-38112                      CVE-2025-38115 CVE-2025-38135 CVE-2025-38136 CVE-2025-38138                      CVE-2025-38143 CVE-2025-38145 CVE-2025-38146 CVE-2025-38147                      CVE-2025-38153 CVE-2025-38157 CVE-2025-38160 CVE-2025-38161                      CVE-2025-38163 CVE-2025-38173 CVE-2025-38174 CVE-2025-38177                      CVE-2025-38180 CVE-2025-38181 CVE-2025-38184 CVE-2025-38185                      CVE-2025-38190 CVE-2025-38193 CVE-2025-38194 CVE-2025-38197                      CVE-2025-38200 CVE-2025-38203 CVE-2025-38204 CVE-2025-38206                      CVE-2025-38211 CVE-2025-38212 CVE-2025-38214 CVE-2025-38218                      CVE-2025-38219 CVE-2025-38222 CVE-2025-38226 CVE-2025-38227                      CVE-2025-38229 CVE-2025-38230 CVE-2025-38231 CVE-2025-38237                      CVE-2025-38245 CVE-2025-38249 CVE-2025-38251 CVE-2025-38263                      CVE-2025-38273 CVE-2025-38285 CVE-2025-38286 CVE-2025-38293                      CVE-2025-38298 CVE-2025-38312 CVE-2025-38313 CVE-2025-38320                      CVE-2025-38323 CVE-2025-38324 CVE-2025-38326 CVE-2025-38328                      CVE-2025-38332 CVE-2025-38336 CVE-2025-38337 CVE-2025-38342                      CVE-2025-38344 CVE-2025-38345 CVE-2025-38346 CVE-2025-38347                      CVE-2025-38348 CVE-2025-38350 CVE-2025-38352 CVE-2025-38363                      CVE-2025-38371 CVE-2025-38375 CVE-2025-38377 CVE-2025-38386                      CVE-2025-38387 CVE-2025-38389 CVE-2025-38391 CVE-2025-38393                      CVE-2025-38395 CVE-2025-38399 CVE-2025-38400 CVE-2025-38401                      CVE-2025-38403 CVE-2025-38404 CVE-2025-38406 CVE-2025-38415                      CVE-2025-38416 CVE-2025-38420 CVE-2025-38424 CVE-2025-38428                      CVE-2025-38430 CVE-2025-38439 CVE-2025-38445 CVE-2025-38448                      CVE-2025-38457 CVE-2025-38458 CVE-2025-38459 CVE-2025-38460                      CVE-2025-38461 CVE-2025-38462 CVE-2025-38464 CVE-2025-38465                      CVE-2025-38466 CVE-2025-38467 CVE-2025-38468 CVE-2025-38470                      CVE-2025-38473 CVE-2025-38474 CVE-2025-38476 CVE-2025-38477                      CVE-2025-38478 CVE-2025-38480 CVE-2025-38481 CVE-2025-38482                      CVE-2025-38483 CVE-2025-38487 CVE-2025-38488 CVE-2025-38494                      CVE-2025-38495 CVE-2025-38497 CVE-2025-38498 CVE-2025-38513                      CVE-2025-38514 CVE-2025-38515 CVE-2025-38516 CVE-2025-38529                      CVE-2025-38530 CVE-2025-38535 CVE-2025-38538 CVE-2025-38539                      CVE-2025-38540 CVE-2025-38542 CVE-2025-38546 CVE-2025-38548                      CVE-2025-38553 CVE-2025-38555 CVE-2025-38563 CVE-2025-38565                      CVE-2025-38569 CVE-2025-38572 CVE-2025-38574 CVE-2025-38577                      CVE-2025-38578 CVE-2025-38581 CVE-2025-38601 CVE-2025-38602                      CVE-2025-38604 CVE-2025-38608 CVE-2025-38612 CVE-2025-38617                      CVE-2025-38618 CVE-2025-38622 CVE-2025-38635 CVE-2025-38639                      CVE-2025-38650 CVE-2025-38652 CVE-2025-38663 CVE-2025-38664                      CVE-2025-38666 CVE-2025-38668 CVE-2025-38671 CVE-2025-38676                      CVE-2025-38677 CVE-2025-38680 CVE-2025-38681 CVE-2025-38683                      CVE-2025-38684 CVE-2025-38687 CVE-2025-38691 CVE-2025-38693                      CVE-2025-38694 CVE-2025-38695 CVE-2025-38697 CVE-2025-38698                      CVE-2025-38699 CVE-2025-38700 CVE-2025-38701 CVE-2025-38706                      CVE-2025-38708 CVE-2025-38712 CVE-2025-38713 CVE-2025-38714                      CVE-2025-38715 CVE-2025-38718 CVE-2025-38721 CVE-2025-38724                      CVE-2025-38727 CVE-2025-38729 CVE-2025-38732 CVE-2025-39676                      CVE-2025-39681 CVE-2025-39683 CVE-2025-39687 CVE-2025-39689                      CVE-2025-39691 CVE-2025-39697 CVE-2025-39703 CVE-2025-39709                      CVE-2025-39710 CVE-2025-39713 CVE-2025-39714 CVE-2025-39724                      CVE-2025-39730 CVE-2025-39736 CVE-2025-39737 CVE-2025-39742                      CVE-2025-39743 CVE-2025-39749 CVE-2025-39752 CVE-2025-39756                      CVE-2025-39757 CVE-2025-39760 CVE-2025-39766 CVE-2025-39782                      CVE-2025-39783 CVE-2025-39787 CVE-2025-39788 CVE-2025-39794                      CVE-2025-39795 CVE-2025-39798 CVE-2025-39808 CVE-2025-39812                      CVE-2025-39813 CVE-2025-39817 CVE-2025-39823 CVE-2025-39824                      CVE-2025-39828 CVE-2025-39835 CVE-2025-39839 CVE-2025-39841                      CVE-2025-39846 CVE-2025-39847 CVE-2025-39848 CVE-2025-39853                      CVE-2025-39860 CVE-2025-39864 CVE-2025-39865 CVE-2025-39891                      CVE-2025-39898 CVE-2025-39902 CVE-2025-39920 CVE-2025-40300     Debian Bug     : 1040901 1109891

    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     5.10.244-1.  Starting with this version, the hyperv-daemons package is     also provided on arm64, and modules are signed with an ephemeral key     on all architectures.  This version additionally includes many more     bug fixes from stable updates 5.10.238-5.10.244.

    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.

The version of kernel installed on the remote host is prior to 5.10.242-239.961. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.10-2025-104 advisory.

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

    btrfs: fix deadlock when cloning inline extents and using qgroups (CVE-2021-46987)

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

    uio_hv_generic: Fix another memory leak in error handling paths (CVE-2021-47070)

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

    RDMA/rxe: Return CQE error if invalid lkey was supplied (CVE-2021-47076)

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

    scsi: lpfc: Fix link down processing to address NULL pointer dereference (CVE-2021-47183)

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

    block: don't call rq_qos_ops->done_bio if the bio isn't tracked (CVE-2021-47412)

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

    ptp: Fix possible memory leak in ptp_clock_register() (CVE-2021-47455)

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

    dm rq: don't queue request to blk-mq during DM suspend (CVE-2021-47498)

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

    ACPI: processor: idle: Check acpi_fetch_acpi_dev() return value (CVE-2022-50327)

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

    smb: client: fix UAF in decryption with multichannel (CVE-2025-37750)

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

    virtio-net: ensure the received length does not exceed allocated size (CVE-2025-38375)

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

    net/sched: Return NULL when htb_lookup_leaf encounters an empty rbtree (CVE-2025-38468)

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

    net: vlan: fix VLAN 0 refcount imbalance of toggling filtering during runtime (CVE-2025-38470)

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

    usb: net: sierra: check for no status endpoint (CVE-2025-38474)

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

    rpl: Fix use-after-free in rpl_do_srh_inline(). (CVE-2025-38476)

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

    net/sched: sch_qfq: Fix race condition on qfq_aggregate (CVE-2025-38477)

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

    smb: client: fix use-after-free in crypt_message when using async crypto (CVE-2025-38488)

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

    HID: core: do not bypass hid_hw_raw_request (CVE-2025-38494)

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

    HID: core: ensure the allocated report buffer can contain the reserved report ID (CVE-2025-38495)

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

    clone_private_mnt(): make sure that caller has CAP_SYS_ADMIN in the right userns (CVE-2025-38499)

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

    tracing: Add down_write(trace_event_sem) when adding trace event (CVE-2025-38539)

    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:

    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:

    pptp: ensure minimal skb length in pptp_xmit() (CVE-2025-38574)

    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:

    hfsplus: remove mutex_lock check in hfsplus_free_extents (CVE-2025-38650)

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

    nilfs2: reject invalid file types when reading inodes (CVE-2025-38663)

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

    regulator: core: fix NULL dereference on unbind due to stale coupling data (CVE-2025-38668)

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

    i2c: qup: jump out of the loop in case of timeout (CVE-2025-38671)

    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:

    net/sched: ets: use old 'nbands' while purging unused classes (CVE-2025-38684)

    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:

    scsi: lpfc: Check for hdwq null ptr when cleaning up lpfc_vport structure (CVE-2025-38695)

    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:

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

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

    hfsplus: don't use BUG_ON() in hfsplus_create_attributes_file() (CVE-2025-38712)

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

    hfsplus: fix slab-out-of-bounds read in hfsplus_uni2asc() (CVE-2025-38713)

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

    hfsplus: fix slab-out-of-bounds in hfsplus_bnode_read() (CVE-2025-38714)

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

    hfs: fix slab-out-of-bounds in hfs_bnode_read() (CVE-2025-38715)

    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:

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

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

    scsi: qla4xxx: Prevent a potential error pointer dereference (CVE-2025-39676)

    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:

    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:

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

    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:

    mm/kmemleak: avoid deadlock by moving pr_warn() outside kmemleak_lock (CVE-2025-39736)

    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:

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

    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:

    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:

    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:

    scsi: ufs: exynos: Fix programming of HCI_UTRL_NEXUS_TYPE (CVE-2025-39788)

    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:

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

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

    HID: hid-ntrig: fix unable to handle page fault in ntrig_report_version() (CVE-2025-39808)

    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:

    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:

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

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 SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:02846-1 advisory.

    The SUSE Linux Enterprise 12 SP5 kernel was updated to receive various security bugfixes.


    The following security bugs were fixed:

    - CVE-2021-46984: Fixed an out of bounds access in kyber_bio_merge() in kyber (bsc#1220631).
    - CVE-2021-46987: btrfs: fix deadlock when cloning inline extents and using qgroups (bsc#1220704).
    - CVE-2022-4129: Fixed a denial of service with the Layer 2 Tunneling Protocol (L2TP). A missing lock when     clearing sk_user_data can lead to a race condition and NULL pointer dereference (bsc#1205711).
    - CVE-2022-49138: Bluetooth: hci_event: Fix checking conn for le_conn_complete_evt (bsc#1238160).
    - CVE-2022-49319: iommu/arm-smmu-v3: check return value after calling platform_get_resource()     (bsc#1238374).
    - CVE-2022-49323: iommu/arm-smmu: fix possible null-ptr-deref in arm_smmu_device_probe() (bsc#1238400).
    - CVE-2022-49768: 9p/fd: fix issue of list_del corruption in p9_fd_cancel() (bsc#1242446).
    - CVE-2022-49825: ata: libata-transport: fix error handling in ata_tport_add() (bsc#1242548).
    - CVE-2022-49934: wifi: mac80211: Fix UAF in ieee80211_scan_rx() (bsc#1245051).
    - CVE-2022-49948: vt: Clear selection before changing the font (bsc#1245058).
    - CVE-2022-49969: drm/amd/display: clear optc underflow before turn off odm clock (bsc#1245060).
    - CVE-2022-49993: loop: Check for overflow while configuring loop (bsc#1245121).
    - CVE-2022-50025: cxl: Fix a memory leak in an error handling path (bsc#1245132).
    - CVE-2022-50027: scsi: lpfc: Fix possible memory leak when failing to issue CMF WQE (bsc#1245073).
    - CVE-2022-50030: scsi: lpfc: Prevent buffer overflow crashes in debugfs with malformed user input     (bsc#1245265).
    - CVE-2022-50033: usb: host: ohci-ppc-of: Fix refcount leak bug (bsc#1245139).
    - CVE-2022-50103: sched, cpuset: Fix dl_cpu_busy() panic due to empty cs->cpus_allowed (bsc#1244840).
    - CVE-2022-50149: driver core: fix potential deadlock in __driver_attach (bsc#1244883).
    - CVE-2022-50226: crypto: ccp - Use kzalloc for sev ioctl interfaces to prevent kernel memory leak     (bsc#1244860).
    - CVE-2023-2176: Fixed an out-of-boundary read in compare_netdev_and_ip in drivers/infiniband/core/cma.c     in RDMA (bsc#1210629).
    - CVE-2023-52878: can: dev: can_put_echo_skb(): do not crash kernel if can_priv::echo_skb is accessed out     of bounds (bsc#1225000).
    - CVE-2023-53020: l2tp: close all race conditions in l2tp_tunnel_register() (bsc#1240224).
    - CVE-2023-53117: fs: prevent out-of-bounds array speculation when closing a file descriptor     (bsc#1242780).
    - CVE-2023-53118: scsi: core: Fix a procfs host directory removal regression (bsc#1242365).
    - CVE-2024-26974: crypto: qat - resolve race condition during AER recovery (bsc#1223638).
    - CVE-2024-26982: Fixed Squashfs inode number check not to be an invalid value of zero (bsc#1223634).
    - CVE-2024-44963: btrfs: do not BUG_ON() when freeing tree block after error (bsc#1230216).
    - CVE-2024-46713: kabi fix for perf/aux: Fix AUX buffer serialization (bsc#1230581).
    - CVE-2024-49861: net: clear the dst when changing skb protocol (bsc#1245954).
    - CVE-2025-21731: nbd: do not allow reconnect after disconnect (bsc#1237881).
    - CVE-2025-21928: HID: intel-ish-hid: Fix use-after-free issue in ishtp_hid_remove() (bsc#1240722).
    - CVE-2025-23163: net: vlan: do not propagate flags on open (bsc#1242837).
    - CVE-2025-37856: btrfs: harden block_group::bg_list against list_del() races (bsc#1243068).
    - CVE-2025-37885: KVM: x86: Reset IRTE to host control if *new* route isn't postable (bsc#1242960).
    - CVE-2025-37920: kABI workaround for xsk: Fix race condition in AF_XDP generic RX path (bsc#1243479).
    - CVE-2025-38034: btrfs: correct the order of prelim_ref arguments in btrfs__prelim_ref (bsc#1244792).
    - CVE-2025-38035: nvmet-tcp: do not restore null sk_state_change (bsc#1244801).
    - CVE-2025-38040: serial: mctrl_gpio: split disable_ms into sync and no_sync APIs (bsc#1245078).
    - CVE-2025-38051: smb: client: Fix use-after-free in cifs_fill_dirent (bsc#1244750).
    - CVE-2025-38058: __legitimize_mnt(): check for MNT_SYNC_UMOUNT should be under mount_lock (bsc#1245151).
    - CVE-2025-38064: virtio: break and reset virtio devices on device_shutdown() (bsc#1245201).
    - CVE-2025-38068: crypto: lzo - Fix compression buffer overrun (bsc#1245210).
    - CVE-2025-38074: vhost-scsi: protect vq->log_used with vq->mutex (bsc#1244735).
    - CVE-2025-38079: crypto: algif_hash - fix double free in hash_accept (bsc#1245217).
    - CVE-2025-38094: net: cadence: macb: Fix a possible deadlock in macb_halt_tx (bsc#1245649).
    - CVE-2025-38105: ALSA: usb-audio: Kill timer properly at removal (bsc#1245682).
    - CVE-2025-38108: net_sched: red: fix a race in __red_change() (bsc#1245675).
    - CVE-2025-38112: net: Fix TOCTOU issue in sk_is_readable() (bsc#1245668).
    - CVE-2025-38115: net_sched: sch_sfq: fix a potential crash on gso_skb handling (bsc#1245689).
    - CVE-2025-38126: net: stmmac: make sure that ptp_rate is not 0 before configuring timestamping     (bsc#1245708).
    - CVE-2025-38147: calipso: unlock rcu before returning -EAFNOSUPPORT (bsc#1245768).
    - CVE-2025-38157: wifi: ath9k_htc: Abort software beacon handling if disabled (bsc#1245747).
    - CVE-2025-38161: RDMA/mlx5: Fix error flow upon firmware failure for RQ destruction (bsc#1245777).
    - CVE-2025-38166: bpf: fix ktls panic with sockmap (bsc#1245758).
    - CVE-2025-38180: net: atm: fix /proc/net/atm/lec handling (bsc#1245970).
    - CVE-2025-38181: calipso: Fix null-ptr-deref in calipso_req_{set,del}attr() (bsc#1246000).
    - CVE-2025-38193: net_sched: sch_sfq: reject invalid perturb period (bsc#1245945).
    - CVE-2025-38198: fbcon: Make sure modelist not set on unregistered console (bsc#1245952).
    - CVE-2025-38200: i40e: fix MMIO write access to an invalid page in i40e_clear_hw (bsc#1246045).
    - CVE-2025-38211: RDMA/iwcm: Fix use-after-free of work objects after cm_id destruction (bsc#1246008).
    - CVE-2025-38212: ipc: fix to protect IPCS lookups using RCU (bsc#1246029).
    - CVE-2025-38213: vgacon: Add check for vc_origin address range in vgacon_scroll() (bsc#1246037).
    - CVE-2025-38222: ext4: inline: fix len overflow in ext4_prepare_inline_data (bsc#1245976).
    - CVE-2025-38249: ALSA: usb-audio: Fix out-of-bounds read in snd_usb_get_audioformat_uac3() (bsc#1246171).
    - CVE-2025-38250: kABI workaround for bluetooth hci_dev changes (bsc#1246182).
    - CVE-2025-38264: llist: add interface to check if a node is on a list (bsc#1246387).
    - CVE-2025-38312: fbdev: core: fbcvt: avoid division by 0 in fb_cvt_hperiod() (bsc#1246386).
    - CVE-2025-38319: drm/amd/pp: Fix potential NULL pointer dereference in atomctrl_initialize_mc_reg_table     (bsc#1246243).
    - CVE-2025-38323: net: atm: add lec_mutex (bsc#1246473).
    - CVE-2025-38337: jbd2: fix data-race and null-ptr-deref in jbd2_journal_dirty_metadata() (bsc#1246253).
    - CVE-2025-38350: net/sched: Always pass notifications when child class becomes empty (bsc#1246781).
    - CVE-2025-38375: virtio-net: ensure the received length does not exceed allocated size (bsc#1247177).
    - CVE-2025-38391: usb: typec: altmodes/displayport: do not index invalid pin_assignments (bsc#1247181).
    - CVE-2025-38403: vsock/vmci: Clear the vmci transport packet properly when initializing it (bsc#1247141).
    - CVE-2025-38415: Squashfs: check return result of sb_min_blocksize (bsc#1247147).
    - CVE-2025-38420: wifi: carl9170: do not ping device which has failed to load firmware (bsc#1247279).
    - CVE-2025-38468: net/sched: Return NULL when htb_lookup_leaf encounters an empty rbtree (bsc#1247437).
    - CVE-2025-38477: net/sched: sch_qfq: Avoid triggering might_sleep in atomic context in qfq_delete_class     (bsc#1247314).
    - CVE-2025-38494: HID: core: do not bypass hid_hw_raw_request (bsc#1247349).
    - CVE-2025-38495: HID: core: ensure the allocated report buffer can contain the reserved report ID     (bsc#1247348).


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

  - btrfs: fix deadlock when cloning inline extents and using qgroups There are a few exceptional cases where     cloning an inline extent needs to copy the inline extent data into a page of the destination inode. When     this happens, we end up starting a transaction while having a dirty page for the destination inode and     while having the range locked in the destination's inode iotree too. Because when reserving metadata space     for a transaction we may need to flush existing delalloc in case there is not enough free space, we have a     mechanism in place to prevent a deadlock, which was introduced in commit 3d45f221ce627d (btrfs: fix     deadlock when cloning inline extent and low on free metadata space). However when using qgroups, a     transaction also reserves metadata qgroup space, which can also result in flushing delalloc in case there     is not enough available space at the moment. When this happens we deadlock, since flushing delalloc     requires locking the file range in the inode's iotree and the range was already locked at the very     beginning of the clone operation, before attempting to start the transaction. When this issue happens,     stack traces like the following are reported: [72747.556262] task:kworker/u81:9 state:D stack: 0 pid: 225     ppid: 2 flags:0x00004000 [72747.556268] Workqueue: writeback wb_workfn (flush-btrfs-1142) [72747.556271]     Call Trace: [72747.556273] __schedule+0x296/0x760 [72747.556277] schedule+0x3c/0xa0 [72747.556279]     io_schedule+0x12/0x40 [72747.556284] __lock_page+0x13c/0x280 [72747.556287] ?     generic_file_readonly_mmap+0x70/0x70 [72747.556325] extent_write_cache_pages+0x22a/0x440 [btrfs]     [72747.556331] ? __set_page_dirty_nobuffers+0xe7/0x160 [72747.556358] ? set_extent_buffer_dirty+0x5e/0x80     [btrfs] [72747.556362] ? update_group_capacity+0x25/0x210 [72747.556366] ? cpumask_next_and+0x1a/0x20     [72747.556391] extent_writepages+0x44/0xa0 [btrfs] [72747.556394] do_writepages+0x41/0xd0 [72747.556398]
    __writeback_single_inode+0x39/0x2a0 [72747.556403] writeback_sb_inodes+0x1ea/0x440 [72747.556407]
    __writeback_inodes_wb+0x5f/0xc0 [72747.556410] wb_writeback+0x235/0x2b0 [72747.556414] ?     get_nr_inodes+0x35/0x50 [72747.556417] wb_workfn+0x354/0x490 [72747.556420] ? newidle_balance+0x2c5/0x3e0     [72747.556424] process_one_work+0x1aa/0x340 [72747.556426] worker_thread+0x30/0x390 [72747.556429] ?     create_worker+0x1a0/0x1a0 [72747.556432] kthread+0x116/0x130 [72747.556435] ? kthread_park+0x80/0x80     [72747.556438] ret_from_fork+0x1f/0x30 [72747.566958] Workqueue: btrfs-flush_delalloc btrfs_work_helper     [btrfs] [72747.566961] Call Trace: [72747.566964] __schedule+0x296/0x760 [72747.566968] ?     finish_wait+0x80/0x80 [72747.566970] schedule+0x3c/0xa0 [72747.566995]     wait_extent_bit.constprop.68+0x13b/0x1c0 [btrfs] [72747.566999] ? finish_wait+0x80/0x80 [72747.567024]     lock_extent_bits+0x37/0x90 [btrfs] [72747.567047] btrfs_invalidatepage+0x299/0x2c0 [btrfs] [72747.567051]     ? find_get_pages_range_tag+0x2cd/0x380 [72747.567076] __extent_writepage+0x203/0x320 [btrfs]     [72747.567102] extent_write_cache_pages+0x2bb/0x440 [btrfs] [72747.567106] ? update_load_avg+0x7e/0x5f0     [72747.567109] ? enqueue_entity+0xf4/0x6f0 [72747.567134] extent_writepages+0x44/0xa0 [btrfs]     [72747.567137] ? enqueue_task_fair+0x93/0x6f0 [72747.567140] do_writepages+0x41/0xd0 [72747.567144]
    __filemap_fdatawrite_range+0xc7/0x100 [72747.567167] btrfs_run_delalloc_work+0x17/0x40 [btrfs]     [72747.567195] btrfs_work_helper+0xc2/0x300 [btrfs] [72747.567200] process_one_work+0x1aa/0x340     [72747.567202] worker_thread+0x30/0x390 [72747.567205] ? create_worker+0x1a0/0x1a0 [72747.567208]     kthread+0x116/0x130 [72747.567211] ? kthread_park+0x80/0x80 [72747.567214] ret_from_fork+0x1f/0x30     [72747.569686] task:fsstress state:D stack: ---truncated--- (CVE-2021-46987)

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

ID	Name	Product	Family	Severity
270133	Debian dla-4327 : ata-modules-5.10.0-35-armmp-di - security update	Nessus	Debian Local Security Checks	medium
265084	Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.10-2025-104 (ALASKERNEL-5.10-2025-104)	Nessus	Amazon Linux Local Security Checks	medium
252257	SUSE SLES12 Security Update : kernel (SUSE-SU-2025:02846-1)	Nessus	SuSE Local Security Checks	high
242874	Photon OS 4.0: Linux PHSA-2025-4.0-0834	Nessus	PhotonOS Local Security Checks	medium
230151	Linux Distros Unpatched Vulnerability : CVE-2021-46987	Nessus	Misc.	medium

Detections

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CVE-2021-46987

medium

Tenable Plugins

medium

medium

high

medium

medium