Google: sys-kernel/lakitu-kernel-6_1: security update to 18203.0.0

high Tenable Self-Hosted Container Security Plugin ID 450534

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: uio: Fix use-after-free in uio_open
core-1 core-2 ------------------------------------------------------- uio_unregister_device uio_open idev
= idr_find() device_unregister(&idev->dev) put_device(&idev->dev) uio_device_release
get_device(&idev->dev) kfree(idev) uio_free_minor(minor) uio_release put_device(&idev->dev) kfree(idev)
------------------------------------------------------- In the core-1 uio_unregister_device(), the
device_unregister will kfree idev when the idev->dev kobject ref is 1. But after core-1 device_unregister,
put_device and before doing kfree, the core-2 may get_device. Then: 1. After core-1 kfree idev, the core-2
will do use-after-free for idev. 2. When core-2 do uio_release and put_device, the idev will be double
freed. To address this issue, we can get idev atomic & inc idev reference with minor_lock.
(CVE-2023-52439)

Solution

Update the sys-kernel/lakitu-kernel-6_1 library and its related packages to version 18203.0.0 or later.

Plugin Details

Severity: High

ID: 450534

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: 57.12

Vendor

Vendor Severity: HIGH

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-2023-52439

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: 9/4/2021

Reference Information

CVE: CVE-2023-52439

Detections

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