CVE-2021-26390 Memory corruption in Athlon™ Series
A malicious application can corrupt arbitrary memory via the bootloader, compromising data integrity on AMD Athlon and Ryzen processors.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-26390?
CVE-2021-26390 is a medium-severity memory corruption vulnerability in AMD Athlon™ Series, published on 10 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 coerce the bootloader into corrupting arbitrary memory potentially leading to loss of integrity of data.
Which versions are affected by CVE-2021-26390?
It affects 37 products.
Products include Amd Athlon 300u Firmware, Amd Ryzen 3 3200u Firmware, Amd Ryzen 3 3300u Firmware, Amd Ryzen 3 5300g Firmware, Amd Ryzen 3 5300ge Firmware, Amd Ryzen 5 2600 Firmware and 31 more.
How do I fix CVE-2021-26390?
No fix has been published for CVE-2021-26390 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-2021-26390 being exploited?
There is no known exploitation of CVE-2021-26390 in the wild and no public exploit code.
Sources
Also known as GHSA-rrm7-mqj7-wfrw.