Google: sys-kernel/csql-kernel-6_12, sys-kernel/csql-kernel-6_6: security update to 19216.104.89

medium Tenable Self-Hosted Container Security Plugin ID 467520

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: timers: Fix NULL function pointer race
in timer_shutdown_sync() There is a race condition between timer_shutdown_sync() and timer expiration that
can lead to hitting a WARN_ON in expire_timers(). The issue occurs when timer_shutdown_sync() clears the
timer function to NULL while the timer is still running on another CPU. The race scenario looks like this:
CPU0 CPU1 <SOFTIRQ> lock_timer_base() expire_timers() base->running_timer = timer; unlock_timer_base()
[call_timer_fn enter] mod_timer() ... timer_shutdown_sync() lock_timer_base() // For now, will not detach
the timer but only clear its function to NULL if (base->running_timer != timer) ret =
detach_if_pending(timer, base, true); if (shutdown) timer->function = NULL; unlock_timer_base()
[call_timer_fn exit] lock_timer_base() base->running_timer = NULL; unlock_timer_base() ... // Now timer is
pending while its function set to NULL. // next timer trigger <SOFTIRQ> expire_timers() WARN_ON_ONCE(!fn)
// hit ... lock_timer_base() // Now timer will detach if (base->running_timer != timer) ret =
detach_if_pending(timer, base, true); if (shutdown) timer->function = NULL; unlock_timer_base() The
problem is that timer_shutdown_sync() clears the timer function regardless of whether the timer is
currently running. This can leave a pending timer with a NULL function pointer, which triggers the
WARN_ON_ONCE(!fn) check in expire_timers(). Fix this by only clearing the timer function when actually
detaching the timer. If the timer is running, leave the function pointer intact, which is safe because the
timer will be properly detached when it finishes running. (CVE-2025-68214)

Solution

Update the sys-kernel/csql-kernel-6_12 library and its related packages to version 19216.104.89 or later.

Plugin Details

Severity: Medium

ID: 467520

Version: Revision 1.5

Type: Local

Family: Google COS Security Checks

Published: 10/3/2026

Updated: 10/6/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.58

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: Low

Base Score: 3.8

Temporal Score: 2.8

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

CVSS Score Source: CVE-2025-68214

CVSS v3

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 4.1

Vector: CVSS:3.0/AV:L/AC:H/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: 12/9/2025

Reference Information

CVE: CVE-2025-68214

Detections

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