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Echo: linux: security update to 6.1.176-1

medium Tenable Self-Hosted Container Security Plugin ID 462065

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - In the Linux kernel, the following vulnerability has been resolved: ublk: fix deadlock when reading
 partition table When one process(such as udev) opens ublk block device (e.g., to read the partition table
 via bdev_open()), a deadlock[1] can occur: 1. bdev_open() grabs disk->open_mutex 2. The process issues
 read I/O to ublk backend to read partition table 3. In __ublk_complete_rq(), blk_update_request() or
 blk_mq_end_request() runs bio->bi_end_io() callbacks 4. If this triggers fput() on file descriptor of ublk
 block device, the work may be deferred to current task's task work (see fput() implementation) 5. This
 eventually calls blkdev_release() from the same context 6. blkdev_release() tries to grab disk->open_mutex
 again 7. Deadlock: same task waiting for a mutex it already holds The fix is to run blk_update_request()
 and blk_mq_end_request() with bottom halves disabled. This forces blkdev_release() to run in kernel work-
 queue context instead of current task work context, and allows ublk server to make forward progress, and
 avoids the deadlock. [axboe: rewrite comment in ublk] (CVE-2025-68823)

Solution

Update the linux library and its related packages to version 6.1.176-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2025-68823

Plugin Details

Severity: Medium

ID: 462065

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 93.2

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

Vector: CVSS2#AV:L/AC:L/Au:S/C:N/I:N/A:C

CVSS Score Source: CVE-2025-68823

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 1/14/2026

Vulnerability Publication Date: 1/13/2026

Reference Information

CVE: CVE-2025-68823