CVE-2021-26352 Denial of service in Athlon™ Series
Insufficient bound checks in AMD SMU PCIe Hot Plug table allow access to invalid memory, potentially causing a denial of service.
- 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-2021-26352?
CVE-2021-26352 is a medium-severity denial of service vulnerability in AMD Athlon™ Series, 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
Insufficient bound checks in System Management Unit (SMU) PCIe Hot Plug table may result in access/updates from/to invalid address space that could result in denial of service.
Weakness: CWE-119
Which versions are affected by CVE-2021-26352?
It affects 30 products.
Products include Amd Ryzen 3 5300g Firmware, Amd Ryzen 3 5300ge Firmware, Amd Ryzen 5 2600 Firmware, Amd Ryzen 5 2600x Firmware, Amd Ryzen 5 2700 Firmware, Amd Ryzen 5 2700x Firmware and 24 more.
How do I fix CVE-2021-26352?
No fix has been published for CVE-2021-26352 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-2021-26352 being exploited?
There is no known exploitation of CVE-2021-26352 in the wild and no public exploit code.
Sources
Also known as GHSA-x9rp-5q33-qx3p.