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`).
Metrics
Affected Vendors & Products
Advisories
| Source | ID | Title |
|---|---|---|
Debian DSA |
DSA-5492-1 | linux security update |
EUVD |
EUVD-2023-54035 | 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`). |
Ubuntu USN |
USN-6343-1 | Linux kernel (OEM) vulnerabilities |
Ubuntu USN |
USN-6412-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-6416-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-6416-2 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-6416-3 | Linux kernel (Raspberry Pi) vulnerabilities |
Ubuntu USN |
USN-6445-1 | Linux kernel (Intel IoTG) vulnerabilities |
Ubuntu USN |
USN-6445-2 | Linux kernel (Intel IoTG) vulnerabilities |
Ubuntu USN |
USN-6466-1 | Linux kernel (NVIDIA) vulnerabilities |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Tue, 04 Mar 2025 03:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2025-02-27T20:52:55.595Z
Reserved: 2023-08-04T14:48:29.732Z
Link: CVE-2023-4155
Updated: 2024-08-02T07:17:12.158Z
Status : Modified
Published: 2023-09-13T17:15:10.143
Modified: 2024-11-21T08:34:30.017
Link: CVE-2023-4155
OpenCVE Enrichment
No data.
Debian DSA
EUVD
Ubuntu USN