Google: sys-kernel/lakitu-kernel-6_1: security update to 17872.0.0

high Tenable Cloud Security Plugin ID 451410

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: bpf, cpumap: Make sure kthread is
running before map update returns The following warning was reported when running stress-mode enabled
xdp_redirect_cpu with some RT threads: ------------[ cut here ]------------ WARNING: CPU: 4 PID: 65 at
kernel/bpf/cpumap.c:135 CPU: 4 PID: 65 Comm: kworker/4:1 Not tainted 6.5.0-rc2+ #1 Hardware name: QEMU
Standard PC (i440FX + PIIX, 1996) Workqueue: events cpu_map_kthread_stop RIP:
0010:put_cpu_map_entry+0xda/0x220 ...... Call Trace: <TASK> ? show_regs+0x65/0x70 ? __warn+0xa5/0x240
...... ? put_cpu_map_entry+0xda/0x220 cpu_map_kthread_stop+0x41/0x60 process_one_work+0x6b0/0xb80
worker_thread+0x96/0x720 kthread+0x1a5/0x1f0 ret_from_fork+0x3a/0x70 ret_from_fork_asm+0x1b/0x30 </TASK>
The root cause is the same as commit 436901649731 ("bpf: cpumap: Fix memory leak in cpu_map_update_elem").
The kthread is stopped prematurely by kthread_stop() in cpu_map_kthread_stop(), and kthread() doesn't call
cpu_map_kthread_run() at all but XDP program has already queued some frames or skbs into ptr_ring. So when
__cpu_map_ring_cleanup() checks the ptr_ring, it will find it was not emptied and report a warning. An
alternative fix is to use __cpu_map_ring_cleanup() to drop these pending frames or skbs when
kthread_stop() returns -EINTR, but it may confuse the user, because these frames or skbs have been handled
correctly by XDP program. So instead of dropping these frames or skbs, just make sure the per-cpu kthread
is running before __cpu_map_entry_alloc() returns. After apply the fix, the error handle for
kthread_stop() will be unnecessary because it will always return 0, so just remove it. (CVE-2023-53577)

Solution

Update the sys-kernel/lakitu-kernel-6_1 library and its related packages to version 17872.0.0 or later.

Plugin Details

Severity: High

ID: 451410

Version: Revision 1.1

Type: Local

Family: Google COS Security Checks

Published: 10/1/2026

Updated: 10/1/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.5

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-2023-53577

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: 9/6/2023

Reference Information

CVE: CVE-2023-53577

Detections

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