CVE-2021-26391 Security feature bypass in AMD Radeon RX 5000 Series & PRO W5000 Series
An attacker with privileges can bypass signature verification to execute arbitrary code in Trusted Applications or the kernel on AMD Radeon GPUs.
- 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-2021-26391?
CVE-2021-26391 is a high-severity vulnerability in Amd Radeon Software, published on 9 Nov 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Insufficient verification of multiple header signatures while loading a Trusted Application (TA) may allow an attacker with privileges to gain code execution in that TA or the OS/kernel.
Weakness: CWE-347
Which versions are affected by CVE-2021-26391?
It affects 26 products.
Products include Amd Enterprise Driver, Amd Radeon Pro Software, Amd Radeon Rx Vega 56 Firmware, Amd Radeon Rx Vega 64 Firmware, Amd Radeon Software, Amd Ryzen 3 5300g Firmware and 20 more.
How do I fix CVE-2021-26391?
No fix has been published for CVE-2021-26391 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-26391 being exploited?
There is no known exploitation of CVE-2021-26391 in the wild and no public exploit code.
Other vulnerabilities in Amd Radeon Software
Sources
Also known as GHSA-cm49-fh74-75ch.