Detections
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Google: sys-kernel/cchost-kernel-6_12, sys-kernel/csql-kernel-6_6: security update to 19216.220.174

critical Tenable Cloud Security Plugin ID 472030

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_conntrack_h323: check
 for zero length in DecodeQ931() In DecodeQ931(), the UserUserIE code path reads a 16-bit length from the
 packet, then decrements it by 1 to skip the protocol discriminator byte before passing it to
 DecodeH323_UserInformation(). If the encoded length is 0, the decrement wraps to -1, which is then passed
 as a large value to the decoder, leading to an out-of-bounds read. Add a check to ensure len is positive
 after the decrement. (CVE-2026-23455)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19216.220.174 or later.

See Also

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

Plugin Details

Severity: Critical

ID: 472030

Version: Revision 1.1

Type: Local

Published: 10/3/2026

Updated: 10/3/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.6

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

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

CVSS Score Source: CVE-2026-23455

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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: 4/3/2026

Reference Information

CVE: CVE-2026-23455