CVE-2022-46395: arm avalon_gpu_kernel_driver Use After Free

Vulnerability summary

CVE-2022-46395 is a high (CVSS 8.8) Use After Free vulnerability in arm avalon_gpu_kernel_driver. EPSS estimates a 2.70% chance of exploitation in the next 30 days, higher than 85.7% of scored vulnerabilities.

Timeline

1. 06-03-2023
   PublishedVulnerability first disclosed.
2. 27-11-2024
   Last modifiedVulnerability information updated.

Description

An issue was discovered in the Arm Mali GPU Kernel Driver. A non-privileged user can make improper GPU processing operations to gain access to already freed memory. This affects Midgard r0p0 through r32p0, Bifrost r0p0 through r41p0 before r42p0, Valhall r19p0 through r41p0 before r42p0, and Avalon r41p0 before r42p0.

• 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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.