Google: sys-kernel/csql-kernel-6_6: security update to 19165.0.0

medium Tenable Cloud Security Plugin ID 453867

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: ovl: support encoding fid from inode
with no alias Dmitry Safonov reported that a WARN_ON() assertion can be trigered by userspace when calling
inotify_show_fdinfo() for an overlayfs watched inode, whose dentry aliases were discarded with
drop_caches. The WARN_ON() assertion in inotify_show_fdinfo() was removed, because it is possible for
encoding file handle to fail for other reason, but the impact of failing to encode an overlayfs file
handle goes beyond this assertion. As shown in the LTP test case mentioned in the link below, failure to
encode an overlayfs file handle from a non-aliased inode also leads to failure to report an fid with
FAN_DELETE_SELF fanotify events. As Dmitry notes in his analyzis of the problem, ovl_encode_fh() fails if
it cannot find an alias for the inode, but this failure can be fixed. ovl_encode_fh() seldom uses the
alias and in the case of non-decodable file handles, as is often the case with fanotify fid info,
ovl_encode_fh() never needs to use the alias to encode a file handle. Defer finding an alias until it is
actually needed so ovl_encode_fh() will not fail in the common case of FAN_DELETE_SELF fanotify events.
(CVE-2025-21654)

Solution

Update the sys-kernel/csql-kernel-6_6 library and its related packages to version 19165.0.0 or later.

Plugin Details

Severity: Medium

ID: 453867

Version: Revision 1.1

Type: Local

Family: Google COS Security Checks

Published: 10/1/2026

Updated: 10/1/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.26

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-2025-21654

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: 1/19/2025

Reference Information

CVE: CVE-2025-21654

Detections

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