CVE-2026-46071
KVM: nSVM: Avoid clearing VMCB_LBR in vmcb12
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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().
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | May 27, 2026 |
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Free · No credit card · 60 sec setup
Affected Versions
Linux / Linux
d20c796ca3709801f8a7fa36e8770a3dd8ebd34e < a3f0981a5a0e0bd51ad74cc7d9eed32294b24002 d20c796ca3709801f8a7fa36e8770a3dd8ebd34e < 9efe23568806d1cd06f7d146f9b3037b8d585a9f d20c796ca3709801f8a7fa36e8770a3dd8ebd34e < b53ab5167a81537777ac780bbd93d32613aa3bda
Linux / Linux
5.19