Google: sys-kernel/cchost-kernel-6_12, sys-kernel/cchost-kernel-6_18, sys-kernel/csql-kernel-6_12, sys-kernel/csql-kernel-6_18, sys-kernel/lakitu-kernel-6_12, sys-kernel/lakitu-kernel-6_18, sys-kernel/lakitu-nc-kernel-6_12, sys-kernel/lakitu-nc-kernel-6_18: security update to 19999.44.126

medium Tenable Self-Hosted Container Security Plugin ID 475367

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: btrfs: handle lack of space when
cleaning up verity items When enable_verity() hits the qgroup limit, rollback_verity() needs its own
metadata reservation. When the qgroup limit or lack of space refuses the rollback, the whole filesystem is
forced read-only even though the qgroup limit was for one subvolume only. Also orphan cleanup at the next
mount fails the same way, so the leftover items are never removed: with -EDQUOT the subvolume stays
unreachable, and with -ENOSPC on a full filesystem the next read-write mount fails. Start transactions
with btrfs_start_transaction_fallback_global_rsv() in btrfs_orphan_cleanup(), drop_verity_items() and
rollback_verity(). Those calls only delete items and free the space in the end, so they may use the global
reserve and skip the qgroup limit, which avoids -ENOSPC and -EDQUOT. (CVE-2026-98279)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19999.44.126 or later.

Plugin Details

Severity: Medium

ID: 475367

Version: Revision 1.1

Type: Local

Family: Google COS Security Checks

Published: 10/16/2026

Updated: 10/16/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.67

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS Score Source: CVE-2026-98279

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: 10/6/2026

Reference Information

CVE: CVE-2026-98279

Detections

Analytics