Google: sys-kernel/cchost-kernel-6_12, sys-kernel/cchost-kernel-6_18, sys-kernel/csql-kernel-6_12, sys-kernel/csql-kernel-6_18, sys-kernel/lakitu-kernel-6_12, sys-kernel/lakitu-kernel-6_18, sys-kernel/lakitu-nc-kernel-6_12, sys-kernel/lakitu-nc-kernel-6_18: security update to 19999.44.106

high Tenable Self-Hosted Container Security Plugin ID 475615

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: smb: client: avoid leaking refcount in
cifs_queue_oplock_break() cifs_queue_oplock_break() unconditionally takes a reference on the target file
before queueing cifs_oplock_break(). Only that work item decreases the reference counter again. If another
oplock break arrives while that work is still queued, queue_work() will return false and not queue this
second work item. As a result, we will never reach the point to drop the file reference again and are
leaking this reference. This can be triggered when interacting with a slow-responding server. As a result,
later unmount operations for this file system will fail with BUG: Dentry ... still in use (1) [unmount of
cifs cifs] VFS: Busy inodes after unmount of cifs (cifs) kernel BUG at fs/super.c:777! Fix this by only
incrementing the reference count if the work has been queued successfully. Taking it after queue_work() is
safe because all three callers hold tcon->open_file_lock across the call and _cifsFileInfo_put()
decrements under that same lock, so a worker that starts the handler in the window cannot drop the
reference before it has been taken. (CVE-2026-97557)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19999.44.106 or later.

Plugin Details

Severity: High

ID: 475615

Version: Revision 1.1

Type: Local

Family: Google COS Security Checks

Published: 10/16/2026

Updated: 10/16/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.7

Vendor

Vendor Severity: HIGH

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-97557

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/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: 9/25/2026

Reference Information

CVE: CVE-2026-97557

Detections

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