Google: sys-kernel/csql-kernel-6_1, sys-kernel/lakitu-kernel-6_1: security update to 18244.448.50

medium Tenable Cloud Security Plugin ID 451037

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: ftrace: Fix potential warning in
trace_printk_seq during ftrace_dump When calling ftrace_dump_one() concurrently with reading trace_pipe, a
WARN_ON_ONCE() in trace_printk_seq() can be triggered due to a race condition. The issue occurs because:
CPU0 (ftrace_dump) CPU1 (reader) echo z > /proc/sysrq-trigger !trace_empty(&iter)
trace_iterator_reset(&iter) <- len = size = 0 cat /sys/kernel/tracing/trace_pipe
trace_find_next_entry_inc(&iter) __find_next_entry ring_buffer_empty_cpu <- all empty return NULL
trace_printk_seq(&iter.seq) WARN_ON_ONCE(s->seq.len >= s->seq.size) In the context between trace_empty()
and trace_find_next_entry_inc() during ftrace_dump, the ring buffer data was consumed by other readers.
This caused trace_find_next_entry_inc to return NULL, failing to populate `iter.seq`. At this point, due
to the prior trace_iterator_reset, both `iter.seq.len` and `iter.seq.size` were set to 0. Since they are
equal, the WARN_ON_ONCE condition is triggered. Move the trace_printk_seq() into the if block that checks
to make sure the return value of trace_find_next_entry_inc() is non-NULL in ftrace_dump_one(), ensuring
the 'iter.seq' is properly populated before subsequent operations. (CVE-2025-39813)

Solution

Update the sys-kernel/csql-kernel-6_1 library and its related packages to version 18244.448.50 or later.

Plugin Details

Severity: Medium

ID: 451037

Version: Revision 1.2

Type: Local

Family: Google COS Security Checks

Published: 10/1/2026

Updated: 10/1/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.25

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-2025-39813

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: 9/15/2025

Reference Information

CVE: CVE-2025-39813

Detections

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