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 19506.505.8

high Tenable Cloud Security Plugin ID 469170

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: dm array: validate array block headers
on read array_block_check() validates blocknr and csum and nothing else, while node_check(), next to it,
has bounded the structural fields since both were written. dm_array_cursor_next() takes its loop bound
from the on-disk nr_entries and element_at() is unguarded pointer arithmetic, so a count larger than the
block holds keeps the cursor in one block while the index grows past it and the read walks off the dm-
bufio buffer -- dm_cache_load_mappings() drives it once per cache block at activation. Check the header
against itself: reject a zero value_size, require max_entries to equal calc_max_entries() for that
value_size and block size, and require nr_entries to fit. Equality rather than an upper bound, since a
count below the real capacity trips BUG_ON() in fill_ablock() and trim_ablock(). Metadata dm-array writes
satisfies all three. (CVE-2026-89574)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19506.505.8 or later.

Plugin Details

Severity: High

ID: 469170

Version: Revision 1.3

Type: Local

Family: Google COS Security Checks

Published: 10/3/2026

Updated: 10/3/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.27

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-2026-89574

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: 9/11/2026

Reference Information

CVE: CVE-2026-89574

Detections

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