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

  - dm-bufio: fix sched in atomic context If try_verify_in_tasklet is set for dm-verity,     DM_BUFIO_CLIENT_NO_SLEEP is enabled for dm-bufio. However, when bufio tries to evict buffers, there is a     chance to trigger scheduling in spin_lock_bh, the following warning is hit: BUG: sleeping function called     from invalid context at drivers/md/dm-bufio.c:2745 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid:
    123, name: kworker/2:2 preempt_count: 201, expected: 0 RCU nest depth: 0, expected: 0 4 locks held by     kworker/2:2/123: #0: ffff88800a2d1548 ((wq_completion)dm_bufio_cache){....}-{0:0}, at:
    process_one_work+0xe46/0x1970 #1: ffffc90000d97d20     ((work_completion)(&dm_bufio_replacement_work)){....}-{0:0}, at: process_one_work+0x763/0x1970 #2:
    ffffffff8555b528 (dm_bufio_clients_lock){....}-{3:3}, at: do_global_cleanup+0x1ce/0x710 #3:
    ffff88801d5820b8 (&c->spinlock){....}-{2:2}, at: do_global_cleanup+0x2a5/0x710 Preemption disabled at:
    [<0000000000000000>] 0x0 CPU: 2 UID: 0 PID: 123 Comm: kworker/2:2 Not tainted 6.16.0-rc3-g90548c634bd0     #305 PREEMPT(voluntary) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS     rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 Workqueue: dm_bufio_cache do_global_cleanup Call     Trace: <TASK> dump_stack_lvl+0x53/0x70 __might_resched+0x360/0x4e0 do_global_cleanup+0x2f5/0x710     process_one_work+0x7db/0x1970 worker_thread+0x518/0xea0 kthread+0x359/0x690 ret_from_fork+0xf3/0x1b0     ret_from_fork_asm+0x1a/0x30 </TASK> That can be reproduced by: veritysetup format --data-block-size=4096
    --hash-block-size=4096 /dev/vda /dev/vdb SIZE=$(blockdev --getsz /dev/vda) dmsetup create myverity -r
    --table 0 $SIZE verity 1 /dev/vda /dev/vdb 4096 4096 <data_blocks> 1 sha256 <root_hash> <salt> 1     try_verify_in_tasklet mount /dev/dm-0 /mnt -o ro echo 102400 >     /sys/module/dm_bufio/parameters/max_cache_size_bytes [read files in /mnt] (CVE-2025-38496)

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

Detections

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Linux Distros Unpatched Vulnerability : CVE-2025-38496

medium Nessus Plugin ID 251305

Version 1.8

Version 1.7

Version 1.3

Version 1.2

Version 1.1

Version 1.8 Oct 29, 2025, 3:03 AM Detection (updated detection logic) Plugin metadata Plugin Feed: 202510290303
Version 1.7 Oct 28, 2025, 5:56 PM Detection (updated detection logic) Plugin Feed: 202510281756
Version 1.3 Sep 4, 2025, 5:30 PM CVSS metrics ("CVSSv2 score" set to 4.9) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C") CVSS metrics ("Cvssv4 score" set to 0.0) CVSSv2 severity (based on None, severity decreased from "High" to "Low") Detection (updated detection logic) Plugin metadata Plugin Feed: 202509041730
Version 1.2 Aug 31, 2025, 7:32 PM CVSS metrics ("CVSSv2 score" set to 4.0) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:L/AC:H/Au:N/C:N/I:N/A:C") CVSS metrics ("Cvssv4 score" set to 0.0) CVSSv2 severity (based on None, severity decreased from "High" to "Low") Detection (updated detection logic) Plugin metadata Plugin Feed: 202508311932
Version 1.1 Aug 19, 2025, 1:38 AM New Plugin Feed: 202508190138