Use-after-free in ARM products - CVE-2021-29256
Published: July 5, 2023
Vulnerability identifier: #VU77971
CSH Severity: High
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber
CVE-ID: CVE-2021-29256
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
The vulnerability is being exploited in the wild
Vulnerable software:
Midgard GPU Kernel Driver
Bifrost GPU Kernel Driver
Valhall GPU Kernel Driver
Midgard GPU Kernel Driver
Bifrost GPU Kernel Driver
Valhall GPU Kernel Driver
Software vendor:
ARM
ARM
Description
The vulnerability allows a local application to escalate privileges on the system.
The vulnerability exists due to improper operations on GPU memory. A local application can trigger a use-after-free error and execute arbitrary code with elevated privileges.
Remediation
Install update from vendor's website.