CVE-2021-26369 Memory corruption in Athlon™ Series

High 7.8 Published 12 May 2022 Updated 16 Sep 2024

Attackers can exploit out-of-bounds memory access in AMD CPU firmware via malicious system calls to execute arbitrary code or escalate privileges.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2021-26369?

CVE-2021-26369 is a high-severity memory corruption vulnerability in Amd Radeon Software, published on 12 May 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A malicious or compromised UApp or ABL may be used by an attacker to send a malformed system call to the bootloader, resulting in out-of-bounds memory accesses.

Weakness: CWE-119

Which versions are affected by CVE-2021-26369?

It affects 50 products.

Products include Amd Athlon 3050ge Firmware, Amd Athlon 3150g Firmware, Amd Athlon 3150ge Firmware, Amd Radeon Software, Amd Ryzen 3 2200u Firmware, Amd Ryzen 3 2300u Firmware and 44 more.

How do I fix CVE-2021-26369?

No fix has been published for CVE-2021-26369 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2021-26369 being exploited?

There is no known exploitation of CVE-2021-26369 in the wild and no public exploit code.

All Amd Radeon Software vulnerabilities

Sources

Also known as GHSA-xx44-254w-m8vr.