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Description

In 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.

PUBLISHED Reserved 2026-05-13 | Published 2026-05-27 | Updated 2026-05-30 | Assigner Linux




HIGH: 7.8CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Product status

Default status
unaffected

7e00b52c8cdd9d3a985d63d72ecae7bde6314883 (git) before cd75e77125c8a51754ca4cd60b4ca083ed735d1d
affected

5c65f097124770c3e5b9b83ed1a8b68c119bc7b5 (git) before 0616137b70e6d9a547d4b60df8e1b64e36d83661
affected

2bed9455db7cc0ab7ece6b3d846472097b52855a (git) before 36990407cdd257473607e33802d00e978af2759e
affected

194b3348bdbb7db65375c72f3f774aee4cc6614e (git) before c93f23375d8c410954b0df825e814b632fd62b9d
affected

194b3348bdbb7db65375c72f3f774aee4cc6614e (git) before 5962c30a6f05ea1ab73f039e235bb30716243517
affected

194b3348bdbb7db65375c72f3f774aee4cc6614e (git) before 36244dfd3853f7bf89d03b8e90d56b23ce7fbc16
affected

194b3348bdbb7db65375c72f3f774aee4cc6614e (git) before d15cda135148ea7ba929cfdbcf208182bc29a7aa
affected

194b3348bdbb7db65375c72f3f774aee4cc6614e (git) before 22d169bdd2849fe6bd18c2643742e1c02be6451c
affected

1b48c70feefc499b62670521efa002ab01e05df5 (git)
affected

bc348a6cc8f92e9979fbfbb3c6b48fd51b4b1dbf (git)
affected

5.10.175 (semver) before 5.10.252
affected

5.15.103 (semver) before 5.15.202
affected

6.1.16 (semver) before 6.1.165
affected

5.4.237 (semver) before 5.5
affected

6.2.3 (semver) before 6.3
affected

Default status
affected

6.3
affected

Any version before 6.3
unaffected

5.10.252 (semver)
unaffected

5.15.202 (semver)
unaffected

6.1.165 (semver)
unaffected

6.6.128 (semver)
unaffected

6.12.75 (semver)
unaffected

6.18.14 (semver)
unaffected

6.19.4 (semver)
unaffected

7.0 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/cd75e77125c8a51754ca4cd60b4ca083ed735d1d

git.kernel.org/...c/0616137b70e6d9a547d4b60df8e1b64e36d83661

git.kernel.org/...c/36990407cdd257473607e33802d00e978af2759e

git.kernel.org/...c/c93f23375d8c410954b0df825e814b632fd62b9d

git.kernel.org/...c/5962c30a6f05ea1ab73f039e235bb30716243517

git.kernel.org/...c/36244dfd3853f7bf89d03b8e90d56b23ce7fbc16

git.kernel.org/...c/d15cda135148ea7ba929cfdbcf208182bc29a7aa

git.kernel.org/...c/22d169bdd2849fe6bd18c2643742e1c02be6451c

cve.org (CVE-2026-45862)

nvd.nist.gov (CVE-2026-45862)

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