CVE-2021-46757 Memory corruption in AMD Ryzen™ Embedded 5000
A malicious Trusted Application can exploit insufficient memory checks in AMD Secure OS to read or write kernel memory, leading to privilege escalation.
- 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-2021-46757?
CVE-2021-46757 is a high-severity memory corruption vulnerability in AMD Ryzen™ Embedded 5000, published on 13 Feb 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Insufficient checking of memory buffer in ASP Secure OS may allow an attacker with a malicious TA to read/write to the ASP Secure OS kernel virtual address space potentially leading to privilege escalation.
Weakness: CWE-119
Which versions are affected by CVE-2021-46757?
It affects 10 products.
Products include Amd Ryzen Embedded 5600e Firmware, Amd Ryzen Embedded 5800e Firmware, Amd Ryzen Embedded 5900e Firmware, Amd Ryzen Embedded 5950e Firmware, Amd Ryzen Embedded R2312 Firmware, Amd Ryzen Embedded R2314 Firmware and 4 more.
How do I fix CVE-2021-46757?
No fix has been published for CVE-2021-46757 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-2021-46757 being exploited?
There is no known exploitation of CVE-2021-46757 in the wild and no public exploit code.
Sources
Also known as GHSA-5fqp-6xx2-943w.