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Echo: linux: security update to 6.1.176-1

medium Tenable Self-Hosted Container Security Plugin ID 457234

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: batman-adv: bla: only purge non-
 released claims When batadv_bla_purge_claims() goes through the list of claims, it is only traversing the
 hash list with an rcu_read_lock(). Due to a potential parallel batadv_claim_put(), it can happen that it
 encounters a claim which was actually in the process of being released+freed by batadv_claim_release(). In
 this case, backbone_gw is set to NULL before the delayed RCU kfree is started. Calling
 batadv_bla_claim_get_backbone_gw() is then no longer allowed because it would cause a NULL-ptr derefence.
 To avoid this, only claims with a valid reference counter must be purged. All others are already taken
 care of. (CVE-2026-46233)

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-2026-46233

Plugin Details

Severity: Medium

ID: 457234

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 93.96

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-2026-46233

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: 5/28/2026

Vulnerability Publication Date: 5/28/2026

Reference Information

CVE: CVE-2026-46233