Buffer overflow in 2nd Gen AMD EPYC Processors and 3rd Gen AMD EPYC Processors - CVE-2021-26354
Published: May 9, 2023
Vulnerability identifier: #VU75923
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-26354
CWE-ID: CWE-119
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: AMD
Affected software:
2nd Gen AMD EPYC Processors
3rd Gen AMD EPYC Processors
2nd Gen AMD EPYC Processors
3rd Gen AMD EPYC Processors
Detailed vulnerability description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error in ASP. A malicious process can issue a system call from a compromised ABL, which can cause arbitrary memory values to be initialized to zero, leading to loss of integrity and a potential crash.
How to mitigate CVE-2021-26354
Install updates from vendor's website.