Detections
Analytics

Google: sys-kernel/csql-kernel-6_6, sys-kernel/lakitu-kernel-6_6, sys-kernel/lakitu-nc-kernel-6_6, sys-kernel/lakitu-vgpu-kernel-6_6: security update to 18867.528.36

critical Tenable Cloud Security Plugin ID 467177

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: 9p: avoid putting oldfid in
 p9_client_walk() error path When p9_client_walk() is called with clone set to false, fid aliases oldfid.
 If the walk subsequently fails after the request has been sent, the error path jumps to clunk_fid, which
 currently calls p9_fid_put(fid) unconditionally. This drops a reference to oldfid even though ownership of
 oldfid remains with the caller. If this is the last reference, oldfid can be clunked and destroyed while
 the caller still expects it to be valid. A later use or put of oldfid can then trigger a use-after-free or
 refcount underflow. Fix this by only putting fid in the clunk_fid error path when it does not alias
 oldfid, matching the existing guard in the error path below. This can be triggered when a multi-component
 walk is split into multiple p9_client_walk() calls and a later non-cloning walk fails. A reproducer and
 refcount warning logs are available on request. (CVE-2026-63795)

Solution

Update the sys-kernel/csql-kernel-6_6 library and its related packages to version 18867.528.36 or later.

See Also

https://storage.googleapis.com/cos-oval-vulnerability-feed/cos-121.oval.xml.tar.gz

Plugin Details

Severity: Critical

ID: 467177

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 93.3

Vendor

Vendor Severity: HIGH

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2026-63795

CVSS v3

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/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: 7/8/2026

Reference Information

CVE: CVE-2026-63795