CyberRota Analysis
This is a medium severity vulnerability with a CVSS score of 5.3. It affects Linux. It may lead to a denial-of-service condition.
CVE
CVE-2023-4155
Severity
MEDIUM
CVSS
5.3
EPSS
0.16%
Linux
Original NVD Description
A flaw was found in KVM AMD Secure Encrypted Virtualization (SEV) in the Linux kernel. A KVM guest using SEV-ES or SEV-SNP with multiple vCPUs can trigger a double fetch race condition vulnerability and invoke the `VMGEXIT` handler recursively. If an attacker manages to call the handler multiple times, they can trigger a stack overflow and cause a denial of service or potentially guest-to-host escape in kernel configurations without stack guard pages (`CONFIG_VMAP_STACK`).
Related CVEs
Other vulnerabilities affecting the same vendor(s)