CVE-2021-26362 Privilege escalation in Athlon™ Series

High 7.1 Published 12 May 2022 Updated 16 Sep 2024

A malicious application can issue malformed system calls to map sensitive SMN registers, compromising integrity and availability on AMD processors.

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-2021-26362?

CVE-2021-26362 is a high-severity 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 issue a malformed system call which results in mapping sensitive System Management Network (SMN) registers leading to a loss of integrity and availability.

Which versions are affected by CVE-2021-26362?

It affects 36 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 30 more.

How do I fix CVE-2021-26362?

No fix has been published for CVE-2021-26362 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-26362 being exploited?

There is no known exploitation of CVE-2021-26362 in the wild and no public exploit code.

All Amd Radeon Software vulnerabilities

Sources

Also known as GHSA-frvj-25f8-q983.