| CVE | CVE-2023-4155 |
| CVE Title | |
| Published Date | 2023-09-13T17:15Z |
| Modified Date | 2023-09-19T17:18Z |
| CWE Type | CWE-367 |
| CVSS 3.x | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H |
| 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`). |
| References | |
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| Reference URL | https://access.redhat.com/security/cve/CVE-2023-4155 |
| Reference Description | MISC https://access.redhat.com/security/cve/CVE-2023-4155 |
| Reference URL | https://bugzilla.redhat.com/show_bug.cgi?id=2213802 |
| Reference Description | MISC https://bugzilla.redhat.com/show_bug.cgi?id=2213802 |
| Tags | Third Party Advisory |
| Sources | NIST MITRE |
