CVE-2023-4155 is a medium-severity vulnerability in the Linux kernel's KVM AMD Secure Encrypted Virtualization (SEV) feature, affecting various Fedora and Red Hat Enterprise Linux distributions. A KVM guest configured with SEV-ES or SEV-SNP and multiple vCPUs can trigger a double fetch race condition, leading to a recursive VMGEXIT handler invocation. This can result in a stack overflow, causing a denial of service or potential guest-to-host escape in kernels without stack guard pages. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
All Versions ImpactedCPE match | cpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:* | ||
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* | ||
8.0CPE matchmatch criteria | cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* | ||
9.0CPE matchmatch criteria | cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* | ||
37CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:N/A:H
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No media coverage found for this CVE.
The average CVE in this peer group has 0.4 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.