Detections
Analytics

Google: sys-kernel/cchost-kernel-6_12, sys-kernel/csql-kernel-6_12, sys-kernel/csql-kernel-6_6, sys-kernel/lakitu-kernel-6_12, sys-kernel/lakitu-kernel-6_6, sys-kernel/lakitu-nc-kernel-6_12, sys-kernel/lakitu-nc-kernel-6_6, sys-kernel/lakitu-vgpu-kernel-6_6: security update to 19216.532.3

medium Tenable Self-Hosted Container Security Plugin ID 468550

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 cache: fix dirty mapping checking
 in passthrough mode switching As mentioned in commit 9b1cc9f251af ("dm cache: share cache-metadata object
 across inactive and active DM tables"), dm-cache assumed table reload occurs after suspension, while LVM's
 table preload breaks this assumption. The dirty mapping check for passthrough mode was designed around
 this assumption and is performed during table creation, causing the check to fail with preload while
 metadata updates are ongoing. This risks loading dirty mappings into passthrough mode, resulting in data
 loss. Reproduce steps: 1. Create a writeback cache with zero migration_threshold to produce dirty mappings
 dmsetup create cmeta --table "0 8192 linear /dev/sdc 0" dmsetup create cdata --table "0 131072 linear
 /dev/sdc 8192" dmsetup create corig --table "0 262144 linear /dev/sdc 262144" dd if=/dev/zero
 of=/dev/mapper/cmeta bs=4k count=1 oflag=direct dmsetup create cache --table "0 262144 cache
 /dev/mapper/cmeta \ /dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 writeback smq \ 2
 migration_threshold 0" 2. Preload a table in passthrough mode dmsetup reload cache --table "0 262144 cache
 /dev/mapper/cmeta \ /dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 passthrough smq 0" 3. Write to the
 first cache block to make it dirty fio --filename=/dev/mapper/cache --name=populate --rw=write --bs=4k \
 --direct=1 --size=64k 4. Resume the inactive table. Now it's possible to load the dirty block into
 passthrough mode. dmsetup resume cache Fix by moving the checks to the preresume phase to support table
 preloading. Also remove the unused function dm_cache_metadata_all_clean. (CVE-2026-53061)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19216.532.3 or later.

See Also

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

Plugin Details

Severity: Medium

ID: 468550

Version: Revision 1.3

Type: Local

Published: 10/3/2026

Updated: 10/3/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.61

Vendor

Vendor Severity: MEDIUM

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2026-53061

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: 6/3/2026

Reference Information

CVE: CVE-2026-53061