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Google: sys-kernel/cchost-kernel-6_12, sys-kernel/csql-kernel-6_6: security update to 19216.395.4

medium Tenable Cloud Security Plugin ID 468221

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: nfnetlink_queue: fix entry
 leak in bridge verdict error path nfqnl_recv_verdict() calls find_dequeue_entry() to remove the queue
 entry from the queue data structures, taking ownership of the entry. For PF_BRIDGE packets, it then calls
 nfqa_parse_bridge() to parse VLAN attributes. If nfqa_parse_bridge() returns an error (e.g. NFQA_VLAN
 present but NFQA_VLAN_TCI missing), the function returns immediately without freeing the dequeued entry or
 its sk_buff. This leaks the nf_queue_entry, its associated sk_buff, and all held references (net_device
 refcounts, struct net refcount). Repeated triggering exhausts kernel memory. Fix this by dropping the
 entry via nfqnl_reinject() with NF_DROP verdict on the error path, consistent with other error handling in
 this file. (CVE-2026-43451)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19216.395.4 or later.

See Also

https://storage.googleapis.com/cos-oval-vulnerability-feed/cos-125.oval.xml.tar.gz

Plugin Details

Severity: Medium

ID: 468221

Version: Revision 1.3

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: 5

Percentile: 93.84

Vendor

Vendor Severity: LOW

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-2026-43451

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

Vulnerability Publication Date: 4/23/2026

Reference Information

CVE: CVE-2026-43451