Google: sys-kernel/cchost-kernel-6_12, sys-kernel/csql-kernel-6_12, sys-kernel/lakitu-kernel-6_12, sys-kernel/lakitu-nc-kernel-6_12: security update to 19506.448.8

high Tenable Self-Hosted Container Security Plugin ID 469815

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: bpf: Tighten cgroup storage cookie
checks for prog arrays The fix in commit abad3d0bad72 ("bpf: Fix oob access in cgroup local storage") is
still incomplete. The prog-array compatibility check treats a program with no cgroup storage as compatible
with any stored storage cookie. This allows a storage-less program to bridge a tail call chain between an
entry program and a storage-using callee even though cgroup local storage at runtime still follows the
caller's context, that is, A -> B(no storage) -> C(storage) path. Requiring exact cookie equality would
break the legitimate case of a storage-less leaf program being tail called from a storage-using one.
Instead, only accept a zero storage cookie if the program cannot perform tail calls itself. This keeps A
-> B(no storage) working while rejecting the A -> B(no storage) -> C(storage) bridge. (CVE-2026-74305)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19506.448.8 or later.

Plugin Details

Severity: High

ID: 469815

Version: Revision 1.6

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: 58.18

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-2026-74305

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: 8/11/2026

Reference Information

CVE: CVE-2026-74305

Detections

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