Out-of-bounds write in 2nd Gen AMD EPYC Processors and 3rd Gen AMD EPYC Processors - CVE-2021-46763
Published: May 10, 2023
Vulnerability identifier: #VU75986
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-46763
CWE-ID: CWE-787
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 escalate privileges on the system.
The vulnerability exists due to a boundary error in the SMU. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.
How to mitigate CVE-2021-46763
Install updates from vendor's website.