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Echo: linux: security update to 6.12.85-1

medium Tenable Cloud Security Plugin ID 461597

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: net/rds: Fix circular locking
 dependency in rds_tcp_tune syzbot reported a circular locking dependency in rds_tcp_tune() where
 sk_net_refcnt_upgrade() is called while holding the socket lock:
 ====================================================== WARNING: possible circular locking dependency
 detected ====================================================== kworker/u10:8/15040 is trying to acquire
 lock: ffffffff8e9aaf80 (fs_reclaim){+.+.}-{0:0}, at: __kmalloc_cache_noprof+0x4b/0x6f0 but task is already
 holding lock: ffff88805a3c1ce0 (k-sk_lock-AF_INET6){+.+.}-{0:0}, at: rds_tcp_tune+0xd7/0x930 The issue
 occurs because sk_net_refcnt_upgrade() performs memory allocation (via get_net_track() ->
 ref_tracker_alloc()) while the socket lock is held, creating a circular dependency with fs_reclaim. Fix
 this by moving sk_net_refcnt_upgrade() outside the socket lock critical section. This is safe because the
 fields modified by the sk_net_refcnt_upgrade() call (sk_net_refcnt, ns_tracker) are not accessed by any
 concurrent code path at this point. v2: - Corrected fixes tag - check patch line wrap nits - ai commentary
 nits (CVE-2026-23419)

Solution

Update the linux library and its related packages to version 6.12.85-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-23419

Plugin Details

Severity: Medium

ID: 461597

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.72

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-2026-23419

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: 5/1/2026

Vulnerability Publication Date: 4/3/2026

Reference Information

CVE: CVE-2026-23419