CVE-2021-26325 Denial of service in 3rd Gen AMD EPYC™
Insufficient input validation in AMD EPYC firmware allows attackers to cause a denial of service via the SNP_GUEST_REQUEST command.
- 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-2021-26325?
CVE-2021-26325 is a medium-severity denial of service vulnerability in Amd Epyc 7232p Firmware, published on 16 Nov 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Insufficient input validation in the SNP_GUEST_REQUEST command may lead to a potential data abort error and a denial of service.
Weakness: CWE-20
Which versions are affected by CVE-2021-26325?
It affects 20 products.
Products include Amd Epyc 7232p Firmware, Amd Epyc 72f3 Firmware, Amd Epyc 7313 Firmware, Amd Epyc 7313p Firmware, Amd Epyc 7343 Firmware, Amd Epyc 73f3 Firmware and 14 more.
How do I fix CVE-2021-26325?
No fix has been published for CVE-2021-26325 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2021-26325 being exploited?
There is no known exploitation of CVE-2021-26325 in the wild and no public exploit code.
Other vulnerabilities in Amd Epyc 7232p Firmware
Sources
Also known as GHSA-v4mm-mqqh-4wf8.