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 19216.739.5

medium Tenable Self-Hosted Container Security Plugin ID 474946

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: fix extent map leak in NOCOW
 direct I/O write btrfs_dio_iomap_begin() calls btrfs_get_extent(), which returns an extent map reference
 that must be dropped on all exit paths. For direct writes into a NOCOW range,
 btrfs_get_blocks_direct_write() keeps using that extent map and asks btrfs_create_dio_extent() to allocate
 the ordered extent. If that fails, for example because btrfs_alloc_ordered_extent() fails, the function
 returns the error without dropping the input extent map. The PREALLOC path avoided this by dropping the
 input extent map before replacing it with the newly created one. Check the error from
 btrfs_create_dio_extent() before replacing the map and drop the input extent map on failure.
 (CVE-2026-89644)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19216.739.5 or later.

See Also

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

Plugin Details

Severity: Medium

ID: 474946

Version: Revision 1.1

Type: Local

Published: 10/16/2026

Updated: 10/16/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.7

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4

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

CVSS Score Source: CVE-2026-89644

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: 9/11/2026

Reference Information

CVE: CVE-2026-89644