Google: sys-kernel/cchost-kernel-6_12, sys-kernel/csql-kernel-6_6: security update to 19216.220.150

high Tenable Self-Hosted Container Security Plugin ID 468745

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: netfilter: nf_tables: release
flowtable after rcu grace period on error Call synchronize_rcu() after unregistering the hooks from error
path, since a hook that already refers to this flowtable can be already registered, exposing this
flowtable to packet path and nfnetlink_hook control plane. This error path is rare, it should only happen
by reaching the maximum number hooks or by failing to set up to hardware offload, just call
synchronize_rcu(). There is a check for already used device hooks by different flowtable that could result
in EEXIST at this late stage. The hook parser can be updated to perform this check earlier to this error
path really becomes rarely exercised. Uncovered by KASAN reported as use-after-free from nfnetlink_hook
path when dumping hooks. (CVE-2026-23392)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19216.220.150 or later.

Plugin Details

Severity: High

ID: 468745

Version: Revision 1.4

Type: Local

Family: Google COS Security Checks

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: 4.9

Percentile: 57.95

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-2026-23392

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: 3/25/2026

Reference Information

CVE: CVE-2026-23392

Detections

Analytics