Google: sys-kernel/cchost-kernel-6_12, sys-kernel/csql-kernel-6_12, sys-kernel/lakitu-kernel-6_12, sys-kernel/lakitu-nc-kernel-6_12: security update to 19506.448.36

high Tenable Cloud Security Plugin ID 469708

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: xfrm: avoid lock inversion in nat
keepalive work nat_keepalive_work() walks the state table while xfrm_state_walk() holds
net->xfrm.xfrm_state_lock. Its callback then acquires x->lock, which conflicts with the delete path taking
the same locks in reverse order via xfrm_state_delete() and __xfrm_state_delete(). This creates an AB-BA
deadlock that is reported by lockdep when a NAT keepalive worker races with SA deletion. Fix this by
splitting the keepalive walk into two phases. First, collect the candidate states while the walk holds
xfrm_state_lock and take a reference on each state. Then, after the walk completes, process each collected
state and acquire x->lock without nesting it under xfrm_state_lock. (CVE-2026-80845)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19506.448.36 or later.

See Also

https://storage.googleapis.com/cos-oval-vulnerability-feed/cos-129.oval.xml.tar.gz

Plugin Details

Severity: High

ID: 469708

Version: Revision 1.6

Type: Local

Published: 10/3/2026

Updated: 10/6/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.48

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: Medium

Base Score: 5.6

Temporal Score: 4.1

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

CVSS Score Source: CVE-2026-80845

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.2

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 9/4/2026

Reference Information

CVE: CVE-2026-80845