CVE-2026-46071
- Source
- https://cve.org/CVERecord?id=CVE-2026-46071
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-46071.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2026-46071
- Downstream
- Related
- Published
- 2026-05-27T12:57:57Z
- Modified
- 2026-08-12T03:30:50Z
- Summary
- KVM: nSVM: Avoid clearing VMCB_LBR in vmcb12
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
KVM: nSVM: Avoid clearing VMCB_LBR in vmcb12
svm_copy_lbrs() always marks VMCB_LBR dirty in the destination VMCB. However, nested_svm_vmexit() uses it to copy LBRs to vmcb12, and clearing clean bits in vmcb12 is not architecturally defined.
Move vmcb_mark_dirty() to callers and drop it for vmcb12.
This also facilitates incoming refactoring that does not pass the entire VMCB to svm_copy_lbrs().
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46071.json" }- References
-
- https://git.kernel.org/stable/c/9efe23568806d1cd06f7d146f9b3037b8d585a9f
- https://git.kernel.org/stable/c/a3f0981a5a0e0bd51ad74cc7d9eed32294b24002
- https://git.kernel.org/stable/c/b53ab5167a81537777ac780bbd93d32613aa3bda
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46071.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-46071
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git