Google: sys-kernel/cchost-kernel-6_12, sys-kernel/csql-kernel-6_12: security update to 19506.0.109

high Tenable Cloud Security Plugin ID 472093

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: Squashfs: check metadata block offset
is within range Syzkaller reports a "general protection fault in squashfs_copy_data" This is ultimately
caused by a corrupted index look-up table, which produces a negative metadata block offset. This is
subsequently passed to squashfs_copy_data (via squashfs_read_metadata) where the negative offset causes an
out of bounds access. The fix is to check that the offset is within range in squashfs_read_metadata. This
will trap this and other cases. (CVE-2026-23388)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19506.0.109 or later.

Plugin Details

Severity: High

ID: 472093

Version: Revision 1.3

Type: Local

Family: Google COS Security Checks

Published: 10/3/2026

Updated: 10/5/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.6

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: Medium

Base Score: 6.2

Temporal Score: 4.6

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

CVSS Score Source: CVE-2026-23388

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: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: 3/25/2026

Reference Information

CVE: CVE-2026-23388

Detections

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