iommu/vt-d: Flush cache for PASID table before using it

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-45862
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-27 14:16:58 UTC
Updated2026-06-25 21:07:19 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Flush cache for PASID table before using it When writing the address of a freshly allocated zero-initialized PASID table to a PASID directory entry, do that after the CPU cache flush for this PASID table, not before it, to avoid the time window when this PASID table may be already used by non-coherent IOMMU hardware while its contents in RAM is still some random old data, not zero-initialized.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

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

EPSS: 0.000130000 probability, percentile 0.024880000 (date 2026-06-03)

Problem Types: NVD-CWE-noinfo

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.8HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
3.1CNADECLARED7.8HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS v3.1 Breakdown

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

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/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 7e00b52c8cdd9d3a985d63d72ecae7bde6314883 cd75e77125c8a51754ca4cd60b4ca083ed735d1d git Not specified
CNA Linux Linux affected 5c65f097124770c3e5b9b83ed1a8b68c119bc7b5 0616137b70e6d9a547d4b60df8e1b64e36d83661 git Not specified
CNA Linux Linux affected 2bed9455db7cc0ab7ece6b3d846472097b52855a 36990407cdd257473607e33802d00e978af2759e git Not specified
CNA Linux Linux affected 194b3348bdbb7db65375c72f3f774aee4cc6614e c93f23375d8c410954b0df825e814b632fd62b9d git Not specified
CNA Linux Linux affected 194b3348bdbb7db65375c72f3f774aee4cc6614e 5962c30a6f05ea1ab73f039e235bb30716243517 git Not specified
CNA Linux Linux affected 194b3348bdbb7db65375c72f3f774aee4cc6614e 36244dfd3853f7bf89d03b8e90d56b23ce7fbc16 git Not specified
CNA Linux Linux affected 194b3348bdbb7db65375c72f3f774aee4cc6614e d15cda135148ea7ba929cfdbcf208182bc29a7aa git Not specified
CNA Linux Linux affected 194b3348bdbb7db65375c72f3f774aee4cc6614e 22d169bdd2849fe6bd18c2643742e1c02be6451c git Not specified
CNA Linux Linux affected 1b48c70feefc499b62670521efa002ab01e05df5 git Not specified
CNA Linux Linux affected bc348a6cc8f92e9979fbfbb3c6b48fd51b4b1dbf git Not specified
CNA Linux Linux affected 5.10.175 5.10.252 semver Not specified
CNA Linux Linux affected 5.15.103 5.15.202 semver Not specified
CNA Linux Linux affected 6.1.16 6.1.165 semver Not specified
CNA Linux Linux affected 5.4.237 5.5 semver Not specified
CNA Linux Linux affected 6.2.3 6.3 semver Not specified
CNA Linux Linux affected 6.3 Not specified
CNA Linux Linux unaffected 6.3 semver Not specified
CNA Linux Linux unaffected 5.10.252 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.202 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.165 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.128 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.75 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.14 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.4 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/d15cda135148ea7ba929cfdbcf208182bc29a7aa 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/22d169bdd2849fe6bd18c2643742e1c02be6451c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/c93f23375d8c410954b0df825e814b632fd62b9d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/36244dfd3853f7bf89d03b8e90d56b23ce7fbc16 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/36990407cdd257473607e33802d00e978af2759e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/5962c30a6f05ea1ab73f039e235bb30716243517 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/cd75e77125c8a51754ca4cd60b4ca083ed735d1d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/0616137b70e6d9a547d4b60df8e1b64e36d83661 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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