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Google: sys-kernel/cchost-kernel-6_12, sys-kernel/csql-kernel-6_12: security update to 19216.220.174

medium Tenable Self-Hosted Container Security Plugin ID 472643

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: netfs: Fix kernel BUG in
 netfs_limit_iter() for ITER_KVEC iterators When a process crashes and the kernel writes a core dump to a
 9P filesystem, __kernel_write() creates an ITER_KVEC iterator. This iterator reaches netfs_limit_iter()
 via netfs_unbuffered_write(), which only handles ITER_FOLIOQ, ITER_BVEC and ITER_XARRAY iterator types,
 hitting the BUG() for any other type. Fix this by adding netfs_limit_kvec() following the same pattern as
 netfs_limit_bvec(), since both kvec and bvec are simple segment arrays with pointer and length fields.
 Dispatch it from netfs_limit_iter() when the iterator type is ITER_KVEC. (CVE-2026-31438)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19216.220.174 or later.

See Also

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

Plugin Details

Severity: Medium

ID: 472643

Version: Revision 1.1

Type: Local

Published: 10/5/2026

Updated: 10/5/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.69

Vendor

Vendor Severity: LOW

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-2026-31438

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: 4/22/2026

Reference Information

CVE: CVE-2026-31438