CVE-2021-26377 Integer overflow in AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics
A malicious userspace process can trigger an integer overflow in the AMD Trusted OS, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-26377?
CVE-2021-26377 is a medium-severity vulnerability in AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics, published on 6 Sep 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Insufficient parameter validation while allocating process space in the Trusted OS (TOS) may allow for a malicious userspace process to trigger an integer overflow, leading to a potential denial of service.
Weakness: CWE-190
Which versions are affected by CVE-2021-26377?
How do I fix CVE-2021-26377?
No fix has been published for CVE-2021-26377 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-26377 being exploited?
There is no known exploitation of CVE-2021-26377 in the wild and no public exploit code.
Sources
Also known as GHSA-hj42-9vr8-7fj2.