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Google: sys-kernel/lakitu-kernel-6_1: security update to 17935.0.0

medium Tenable Cloud Security Plugin ID 450582

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: x86/MCE: Always save CS register on
 AMD Zen IF Poison errors The Instruction Fetch (IF) units on current AMD Zen-based systems do not
 guarantee a synchronous #MC is delivered for poison consumption errors. Therefore, MCG_STATUS[EIPV|RIPV]
 will not be set. However, the microarchitecture does guarantee that the exception is delivered within the
 same context. In other words, the exact rIP is not known, but the context is known to not have changed.
 There is no architecturally-defined method to determine this behavior. The Code Segment (CS) register is
 always valid on such IF unit poison errors regardless of the value of MCG_STATUS[EIPV|RIPV]. Add a quirk
 to save the CS register for poison consumption from the IF unit banks. This is needed to properly
 determine the context of the error. Otherwise, the severity grading function will assume the context is
 IN_KERNEL due to the m->cs value being 0 (the initialized value). This leads to unnecessary kernel panics
 on data poison errors due to the kernel believing the poison consumption occurred in kernel context.
 (CVE-2023-53438)

Solution

Update the sys-kernel/lakitu-kernel-6_1 library and its related packages to version 17935.0.0 or later.

See Also

https://storage.googleapis.com/cos-oval-vulnerability-feed/cos-113.oval.xml.tar.gz

Plugin Details

Severity: Medium

ID: 450582

Version: Revision 1.1

Type: Local

Published: 10/1/2026

Updated: 10/1/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.36

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2023-53438

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/AC:L/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: 10/3/2023

Reference Information

CVE: CVE-2023-53438