CVE-2021-26351 Denial of service in Athlon™ Series
Insufficient DRAM address validation in AMD SMU allows DMA to invalid addresses, causing denial of service on Athlon and Ryzen 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-2021-26351?
CVE-2021-26351 is a medium-severity denial of service vulnerability in AMD Athlon™ Series, published on 12 May 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Insufficient DRAM address validation in System Management Unit (SMU) may result in a DMA (Direct Memory Access) read/write from/to invalid DRAM address that could result in denial of service.
Weakness: CWE-20
Which versions are affected by CVE-2021-26351?
It affects 49 products.
Products include Amd Ryzen 3 3100 Firmware, Amd Ryzen 3 3300g Firmware, Amd Ryzen 3 3300x Firmware, Amd Ryzen 3 5125c Firmware, Amd Ryzen 3 5400u Firmware, Amd Ryzen 3 5425c Firmware and 43 more.
How do I fix CVE-2021-26351?
No fix has been published for CVE-2021-26351 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-2021-26351 being exploited?
There is no known exploitation of CVE-2021-26351 in the wild and no public exploit code.
Other vulnerabilities in AMD Athlon™ Series
Sources
Also known as GHSA-5pj8-h4rh-gp3h.