Updated: 2024-11-22 05:30:08.37415
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`).
| Links | NIST | CIRCL | RHEL | Ubuntu |
| Severity | Score | |
|---|---|---|
| CVSS Version 2.x | 0 | |
| CVSS Version 3.x | MEDIUM | 5.6 |
| OS name | Project name | Version | Score | Severity | Status | Errata | Last updated | Statement |
|---|---|---|---|---|---|---|---|---|
| AlmaLinux 9.2 ESU | kernel | 5.14.0 | 5.6 | MEDIUM | Ignored | 2024-06-25 11:29:35 | ||
| AlmaLinux 9.2 FIPS | kernel | 5.14.0 | 5.6 | MEDIUM | Ignored | 2023-11-21 04:11:43 | ||
| CentOS 6 ELS | kernel | 2.6.32 | 5.6 | MEDIUM | Ignored | 2023-10-27 11:06:45 | ||
| CentOS 7 ELS | kernel | 3.10.0 | 5.6 | MEDIUM | Ignored | 2023-10-27 11:06:44 | ||
| CentOS 8.4 ELS | kernel | 4.18.0 | 5.6 | MEDIUM | Ignored | 2024-06-24 11:33:00 | ||
| CentOS 8.5 ELS | kernel | 4.18.0 | 5.6 | MEDIUM | Ignored | 2024-06-24 11:33:00 | ||
| CentOS Stream 8 ELS | kernel | 4.18.0 | 5.6 | MEDIUM | Ignored | 2024-06-24 11:20:01 | ||
| CloudLinux 6 ELS | kernel | 2.6.32 | 5.6 | MEDIUM | Ignored | 2023-10-27 11:06:45 | ||
| CloudLinux 7 ELS | kernel | 3.10.0 | 5.6 | MEDIUM | Ignored | 2024-10-03 10:51:59 | ||
| Oracle Linux 6 ELS | kernel | 2.6.32 | 5.6 | MEDIUM | Ignored | 2023-10-27 11:06:44 |