CVE-2026-46071

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().

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/11d347b7edf5093d69aca72317300798a32bfd6b
https://git.kernel.org/stable/c/165b08d2d1346dce5ed43db65e10f3194b9ae2fe
https://git.kernel.org/stable/c/9efe23568806d1cd06f7d146f9b3037b8d585a9f	Patch
https://git.kernel.org/stable/c/a3f0981a5a0e0bd51ad74cc7d9eed32294b24002	Patch
https://git.kernel.org/stable/c/b53ab5167a81537777ac780bbd93d32613aa3bda	Patch
https://git.kernel.org/stable/c/b7fefb393a926bdfe445c63b4091185ed7da2733

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

30 Oct 2026, 13:18

Type	Values Removed	Values Added
References		() https://git.kernel.org/stable/c/b7fefb393a926bdfe445c63b4091185ed7da2733 -

21 Oct 2026, 13:19

Type	Values Removed	Values Added
References		() https://git.kernel.org/stable/c/11d347b7edf5093d69aca72317300798a32bfd6b - () https://git.kernel.org/stable/c/165b08d2d1346dce5ed43db65e10f3194b9ae2fe -

Information

Published : 2026-05-27 14:17

Updated : 2026-11-06 17:17

NVD link : CVE-2026-46071

Mitre link : CVE-2026-46071

CVE.ORG link : CVE-2026-46071

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo

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