Use-after-free in 3rd Gen AMD EPYC Processors and 4th Gen AMD EPYC Processors - CVE-2023-20519
Published: December 8, 2023
Vulnerability identifier: #VU84018
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2023-20519
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: AMD
Affected software:
3rd Gen AMD EPYC Processors
4th Gen AMD EPYC Processors
3rd Gen AMD EPYC Processors
4th 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 use-after-free error in the management of an SNP guest context page. A malicious hypervisor can masquerade as the guest's migration agent and perform a denial of service (DoS) attack.
How to mitigate CVE-2023-20519
Install updates from vendor's website.