Google: sys-kernel/cchost-kernel-6_12, sys-kernel/csql-kernel-6_12: security update to 19506.120.52

high Tenable Self-Hosted Container Security Plugin ID 472664

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: can: raw: fix ro->uniq use-after-free
in raw_rcv() raw_release() unregisters raw CAN receive filters via can_rx_unregister(), but receiver
deletion is deferred with call_rcu(). This leaves a window where raw_rcv() may still be running in an RCU
read-side critical section after raw_release() frees ro->uniq, leading to a use-after-free of the percpu
uniq storage. Move free_percpu(ro->uniq) out of raw_release() and into a raw-specific socket destructor.
can_rx_unregister() takes an extra reference to the socket and only drops it from the RCU callback, so
freeing uniq from sk_destruct ensures the percpu area is not released until the relevant callbacks have
drained. [mkl: applied manually] (CVE-2026-31532)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19506.120.52 or later.

Plugin Details

Severity: High

ID: 472664

Version: Revision 1.2

Type: Local

Family: Google COS Security Checks

Published: 10/5/2026

Updated: 10/6/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.86

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2026-31532

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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: 4/23/2026

Reference Information

CVE: CVE-2026-31532

Detections

Analytics