CVE-2021-46760 Memory corruption in 3rd Gen AMD Ryzen™ Threadripper™ Processors “Castle Peak” HEDT
A malicious application can trigger an out-of-bounds memory access in the bootloader, potentially leaking sensitive information or executing code on AMD Threadripper systems.
- 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-2021-46760?
CVE-2021-46760 is a critical memory corruption vulnerability in 3rd Gen AMD Ryzen™ Threadripper™ Processors “Castle Peak” HEDT, published on 9 May 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A malicious or compromised UApp or ABL can send a malformed system call to the bootloader, which may result in an out-of-bounds memory access that may potentially lead to an attacker leaking sensitive information or achieving code execution.
Which versions are affected by CVE-2021-46760?
It affects 7 products.
Products include Amd Ryzen 3945wx Firmware, Amd Ryzen 3955wx Firmware, Amd Ryzen 3960x Firmware, Amd Ryzen 3970x Firmware, Amd Ryzen 3975wx Firmware, Amd Ryzen 3990x Firmware and 1 more.
How do I fix CVE-2021-46760?
No fix has been published for CVE-2021-46760 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-2021-46760 being exploited?
There is no known exploitation of CVE-2021-46760 in the wild and no public exploit code.
Sources
Also known as GHSA-qh8v-25c7-7m9h.