CVE-2021-46763 Memory corruption in 2nd Gen AMD EPYC™
A privileged attacker can exploit insufficient input validation in AMD EPYC SMU to write beyond buffer bounds, compromising system integrity.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-46763?
CVE-2021-46763 is a high-severity memory corruption vulnerability in Amd Epyc 7232p Firmware, published on 9 May 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Insufficient input validation in the SMU may enable a privileged attacker to write beyond the intended bounds of a shared memory buffer potentially leading to a loss of integrity.
Weakness: CWE-787
Which versions are affected by CVE-2021-46763?
It affects 48 products.
Products include Amd Epyc 7232p Firmware, Amd Epyc 7252 Firmware, Amd Epyc 7262 Firmware, Amd Epyc 7272 Firmware, Amd Epyc 7282 Firmware, Amd Epyc 72f3 Firmware and 42 more.
How do I fix CVE-2021-46763?
No fix has been published for CVE-2021-46763 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-2021-46763 being exploited?
There is no known exploitation of CVE-2021-46763 in the wild and no public exploit code.
Other vulnerabilities in Amd Epyc 7232p Firmware
Sources
Also known as GHSA-4c6m-4p4p-3j5f.