CVE-2021-26384 Memory corruption in Athlon™ Series
A malformed SMI command in AMD processors can cause out-of-bounds memory access, potentially leading to resource loss or code execution.
- 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-2021-26384?
CVE-2021-26384 is a high-severity memory corruption vulnerability in AMD Athlon™ Series, published on 14 Jul 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A malformed SMI (System Management Interface) command may allow an attacker to establish a corrupted SMI Trigger Info data structure, potentially leading to out-of-bounds memory reads and writes when triggering an SMI resulting in a potential loss of resources.
Which versions are affected by CVE-2021-26384?
It affects 52 products.
Products include Amd Athlon Gold 3150u Firmware, Amd Athlon Silver 3050u Firmware, Amd Ryzen 3 2200u Firmware, Amd Ryzen 3 2300u Firmware, Amd Ryzen 3 3200u Firmware, Amd Ryzen 3 3250u Firmware and 46 more.
How do I fix CVE-2021-26384?
No fix has been published for CVE-2021-26384 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-2021-26384 being exploited?
There is no known exploitation of CVE-2021-26384 in the wild and no public exploit code.
Other vulnerabilities in AMD Athlon™ Series
Sources
Also known as GHSA-cqhp-pw9h-ff47.