CVE-2021-26324 Memory corruption in 3rd Gen AMD EPYC™
A bug in SEV-ES TMR handling may compromise memory integrity for SNP-active VMs on AMD EPYC 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-2021-26324?
CVE-2021-26324 is a high-severity memory corruption vulnerability in Amd Epyc 72f3 Firmware, 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 bug with the SEV-ES TMR may lead to a potential loss of memory integrity for SNP-active VMs.
Which versions are affected by CVE-2021-26324?
It affects 23 products.
Products include Amd Epyc 72f3 Firmware, Amd Epyc 7313 Firmware, Amd Epyc 7313p Firmware, Amd Epyc 7343 Firmware, Amd Epyc 7373x Firmware, Amd Epyc 73f3 Firmware and 17 more.
How do I fix CVE-2021-26324?
No fix has been published for CVE-2021-26324 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-2021-26324 being exploited?
There is no known exploitation of CVE-2021-26324 in the wild and no public exploit code.
Other vulnerabilities in Amd Epyc 72f3 Firmware
Sources
Also known as GHSA-r3vf-g82m-5gqf.