CVE-2023-4969

Publication date 16 January 2024

Last updated 11 July 2025

Ubuntu priority

Cvss 3 Severity Score

Description

A GPU kernel can read sensitive data from another GPU kernel (even from another user or app) through an optimized GPU memory region called _local memory_ on various architectures.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
linux-firmware	25.10 questing	Vulnerable, fix deferred
	25.04 plucky	Vulnerable, fix deferred
	24.10 oracular	Ignored end of life, was deferred [2024-02-19]
	24.04 LTS noble	Vulnerable, fix deferred
	23.10 mantic	Ignored end of life, was deferred [2024-02-19]
	23.04 lunar	Ignored end of life, was deferred [2024-02-19]
	22.04 LTS jammy	Vulnerable, fix deferred
	20.04 LTS focal	Vulnerable, fix deferred
	18.04 LTS bionic	Vulnerable, fix deferred
	16.04 LTS xenial	Vulnerable, fix deferred
	14.04 LTS trusty	Vulnerable, fix deferred

Notes

alexmurray

According to the upstream AMD advisory, they plan to create a new mode to prevent this attack and more information will be available in March 2024 - unsure if this will come via GPU firmware updates in linux-firmware but assigning this CVE there for now until we get more information.

Severity score breakdown

Parameter	Value
Base score	6.5 · Medium
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Changed
Confidentiality	High
Integrity impact	None
Availability impact	None
Vector	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N