CVE-2023-6363 Mali GPU Kernel Driver allows improper GPU processing operations

Medium 5.1 Published 3 May 2024 Updated 25 Nov 2024

A local attacker can exploit a use-after-free flaw in the Mali GPU kernel driver to access freed memory, potentially leading to privilege escalation or code execution.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2023-6363?

CVE-2023-6363 is a medium-severity use after free vulnerability in Arm Valhall Gpu Kernel Driver, published on 3 May 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Use After Free vulnerability in Arm Ltd Valhall GPU Kernel Driver, Arm Ltd Arm 5th Gen GPU Architecture Kernel Driver allows a local non-privileged user to make improper GPU memory processing operations. If the system’s memory is carefully prepared by the user, then this in turn could give them access to already freed memory. This issue affects Valhall GPU Kernel Driver: from r41p0 through r47p0; Arm 5th Gen GPU Architecture Kernel Driver: from r41p0 through r47p0.

Weakness: CWE-416

Which versions are affected by CVE-2023-6363?

It affects 2 products.

Products include Arm 5th Gen Gpu Architecture Kernel Driver, Arm Valhall Gpu Kernel Driver.

How do I fix CVE-2023-6363?

Apply the vendor's patch.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2023-6363 being exploited?

There is no known exploitation of CVE-2023-6363 in the wild and no public exploit code.

All Arm Valhall Gpu Kernel Driver vulnerabilities

Sources

Also known as A-303632069, ASB-A-303632069, GHSA-gg2x-v7xp-pj7x.