CVE-2023-4211: Arm Mali GPU Kernel Driver Use-After-Free Vulnerability

Vulnerability summary

CVE-2023-4211 is a medium (CVSS 5.5) Use After Free vulnerability in Arm Mali GPU Kernel Driver. It is known to be exploited: CISA lists it, first on 03-10-2023. EPSS estimates a 1.10% chance of exploitation in the next 30 days, higher than 65.1% of scored vulnerabilities.

Timeline

1. 01-10-2023
   PublishedVulnerability first disclosed.
2. 03-10-2023
   Added to CISA KEVArm Mali GPU Kernel Driver Use-After-Free Vulnerability
3. 24-10-2023
   CISA remediation dueApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
4. 21-10-2025
   Last modifiedVulnerability information updated.

Description

A local non-privileged user can make improper GPU memory processing operations to gain access to already freed memory.

• CWE-416Use After FreeThe product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.