CVE-2026-45862
iommu/vt-d: Flush cache for PASID table before using it
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | May 27, 2026 |
| Last Updated | May 30, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
7e00b52c8cdd9d3a985d63d72ecae7bde6314883 < cd75e77125c8a51754ca4cd60b4ca083ed735d1d 5c65f097124770c3e5b9b83ed1a8b68c119bc7b5 < 0616137b70e6d9a547d4b60df8e1b64e36d83661 2bed9455db7cc0ab7ece6b3d846472097b52855a < 36990407cdd257473607e33802d00e978af2759e 194b3348bdbb7db65375c72f3f774aee4cc6614e < c93f23375d8c410954b0df825e814b632fd62b9d 194b3348bdbb7db65375c72f3f774aee4cc6614e < 5962c30a6f05ea1ab73f039e235bb30716243517 194b3348bdbb7db65375c72f3f774aee4cc6614e < 36244dfd3853f7bf89d03b8e90d56b23ce7fbc16 194b3348bdbb7db65375c72f3f774aee4cc6614e < d15cda135148ea7ba929cfdbcf208182bc29a7aa 194b3348bdbb7db65375c72f3f774aee4cc6614e < 22d169bdd2849fe6bd18c2643742e1c02be6451c 1b48c70feefc499b62670521efa002ab01e05df5 bc348a6cc8f92e9979fbfbb3c6b48fd51b4b1dbf 5.10.175 < 5.10.252 5.15.103 < 5.15.202 6.1.16 < 6.1.165 5.4.237 < 5.5 6.2.3 < 6.3
Linux / Linux
6.3
References
git.kernel.org: https://git.kernel.org/stable/c/cd75e77125c8a51754ca4cd60b4ca083ed735d1d git.kernel.org: https://git.kernel.org/stable/c/0616137b70e6d9a547d4b60df8e1b64e36d83661 git.kernel.org: https://git.kernel.org/stable/c/36990407cdd257473607e33802d00e978af2759e git.kernel.org: https://git.kernel.org/stable/c/c93f23375d8c410954b0df825e814b632fd62b9d git.kernel.org: https://git.kernel.org/stable/c/5962c30a6f05ea1ab73f039e235bb30716243517 git.kernel.org: https://git.kernel.org/stable/c/36244dfd3853f7bf89d03b8e90d56b23ce7fbc16 git.kernel.org: https://git.kernel.org/stable/c/d15cda135148ea7ba929cfdbcf208182bc29a7aa git.kernel.org: https://git.kernel.org/stable/c/22d169bdd2849fe6bd18c2643742e1c02be6451c