AZL-6554
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-6554.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/AZL-6554
- Upstream
- Published
- 2021-07-22T17:15:09Z
- Modified
- 2026-04-01T05:20:35.341471Z
- Severity
-
- 7.4 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- CVE-2021-29657 affecting package kernel for versions less than 5.10.78.1-1
- Details
-
arch/x86/kvm/svm/nested.c in the Linux kernel before 5.11.12 has a use-after-free in which an AMD KVM guest can bypass access control on host OS MSRs when there are nested guests, aka CID-a58d9166a756. This occurs because of a TOCTOU race condition associated with a VMCB12 double fetch in nestedsvmvmrun.
- References