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 18867.584.3

high Tenable Cloud Security Plugin ID 467060

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: skip nlink update in cacheless
 mode to fix WARN_ON v9fs_dec_count() unconditionally calls drop_nlink() on regular files, even when the
 inode's nlink is already zero. In cacheless mode the client refetches inode metadata from the server (the
 source of truth) on every operation, so by the time v9fs_remove() returns, the locally cached nlink may
 already reflect the post-unlink value: 1. Client initiates unlink, server processes it and sets nlink to 0
 2. Client refetches inode metadata (nlink=0) before unlink returns 3. Client's v9fs_remove() completes
 successfully 4. Client calls v9fs_dec_count() which calls drop_nlink() on nlink=0 This race is easily
 triggered under heavy unlink workloads, such as stress-ng's unlink stressor, producing the following
 warning: WARNING: fs/inode.c:417 at drop_nlink+0x4c/0xc8 Call trace: drop_nlink+0x4c/0xc8
 v9fs_remove+0x1e0/0x250 [9p] v9fs_vfs_unlink+0x20/0x38 [9p] vfs_unlink+0x13c/0x258 ... In cacheless mode
 the server is authoritative and the inode is on its way out, so locally adjusting nlink buys nothing. Skip
 v9fs_dec_count() entirely when neither CACHE_META nor CACHE_LOOSE is set, which both avoids the warning
 and removes a class of nlink races (two concurrent unlinkers observing nlink > 0 and both calling
 drop_nlink()) that an nlink == 0 guard alone would only narrow rather than close. (CVE-2026-72170)

Solution

Update the sys-kernel/csql-kernel-6_6 library and its related packages to version 18867.584.3 or later.

See Also

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

Plugin Details

Severity: High

ID: 467060

Version: Revision 1.3

Type: Local

Published: 10/2/2026

Updated: 10/3/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.13

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2026-72170

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/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: 8/11/2026

Reference Information

CVE: CVE-2026-72170