KVM: x86: check for nEPT/nNPT in slow flush hypercalls

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-46131
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-28 10:16:28 UTC
Updated2026-06-24 17:52:24 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: KVM: x86: check for nEPT/nNPT in slow flush hypercalls Checking is_guest_mode(vcpu) is incorrect, because translate_nested_gpa() is only valid if an L2 guest is running *with nested EPT/NPT enabled*. Instead use the same condition as translate_nested_gpa() itself.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.000180000 probability, percentile 0.050080000 (date 2026-06-02)

Problem Types: NVD-CWE-noinfo

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected aee738236dca0d0870789138ec494e15d6303566 971f17f5d91045404e3914029ea57c3da90179a4 git Not specified
CNA Linux Linux affected aee738236dca0d0870789138ec494e15d6303566 45fc766bc756ff1d66f8ca026a9c4f7f764adfae git Not specified
CNA Linux Linux affected aee738236dca0d0870789138ec494e15d6303566 d6f4e217d663ede5becc2fd6cb612c749677387b git Not specified
CNA Linux Linux affected aee738236dca0d0870789138ec494e15d6303566 4c7f8436b19a2a3acc0cb6b6e3becd6796ae5c57 git Not specified
CNA Linux Linux affected aee738236dca0d0870789138ec494e15d6303566 464af6fc2b1dcc74005b7f58ee3812b17777efee git Not specified
CNA Linux Linux affected 6.2 Not specified
CNA Linux Linux unaffected 6.2 semver Not specified
CNA Linux Linux unaffected 6.6.140 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.88 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.30 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.7 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/45fc766bc756ff1d66f8ca026a9c4f7f764adfae 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/971f17f5d91045404e3914029ea57c3da90179a4 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/4c7f8436b19a2a3acc0cb6b6e3becd6796ae5c57 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/d6f4e217d663ede5becc2fd6cb612c749677387b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/464af6fc2b1dcc74005b7f58ee3812b17777efee 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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