CVE-2026-46071
MEDIUM
MEDIUM
Priority: 0.01
BB Relevance:
36/100
Published: 2026-05-27
Modified: 2026-10-30
First seen: 2026-10-30
Status: active
Attack Surface
Low Complexity
No Interaction
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
None
I:
None
A:
High
Description
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().
Affected Software (8)
| Vendor | Product | Version |
|---|---|---|
| Linux | Linux | d20c796ca3709801f8a7fa36e8770a3dd8ebd34e < b7fefb393a926bdfe445c63b4091185ed7da2733 |
| Linux | Linux | d20c796ca3709801f8a7fa36e8770a3dd8ebd34e < 165b08d2d1346dce5ed43db65e10f3194b9ae2fe |
| Linux | Linux | d20c796ca3709801f8a7fa36e8770a3dd8ebd34e < 11d347b7edf5093d69aca72317300798a32bfd6b |
| Linux | Linux | d20c796ca3709801f8a7fa36e8770a3dd8ebd34e < a3f0981a5a0e0bd51ad74cc7d9eed32294b24002 |
| Linux | Linux | d20c796ca3709801f8a7fa36e8770a3dd8ebd34e < 9efe23568806d1cd06f7d146f9b3037b8d585a9f |
| Linux | Linux | d20c796ca3709801f8a7fa36e8770a3dd8ebd34e < b53ab5167a81537777ac780bbd93d32613aa3bda |
| Linux | Linux | 5.19 |
| linux | linux_kernel | 5.19 – 6.18.27 |