HarborGuard / CVE
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HIGHCVE-2026-45862Published Modified CNA Linux

CVE-2026-45862: iommu/vt-d: Flush cache for PASID table before using it

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.

Metrics

CVSS v3.1
7.8
Severity
HIGH
Fixed in
0
Affected Products
2

Fix available

00616137b70e6d9a547d4b60df8e1b64e36d8366122d169bdd2849fe6bd18c2643742e1c02be6451c36244dfd3853f7bf89d03b8e90d56b23ce7fbc1636990407cdd257473607e33802d00e978af2759e5.55.10.2525.15.2025962c30a6f05ea1ab73f039e235bb307162435176.1.1656.36.6.1286.12.756.18.146.19.47.0c93f23375d8c410954b0df825e814b632fd62b9dcd75e77125c8a51754ca4cd60b4ca083ed735d1dd15cda135148ea7ba929cfdbcf208182bc29a7aa
Affected packages
  • Linux / Linux
    < cd75e77125c8a51754ca4cd60b4ca083ed735d1d (from 7e00b52c8cdd9d3a985d63d72ecae7bde6314883) · < 0616137b70e6d9a547d4b60df8e1b64e36d83661 (from 5c65f097124770c3e5b9b83ed1a8b68c119bc7b5) · < 36990407cdd257473607e33802d00e978af2759e (from 2bed9455db7cc0ab7ece6b3d846472097b52855a) · < c93f23375d8c410954b0df825e814b632fd62b9d (from 194b3348bdbb7db65375c72f3f774aee4cc6614e) · < 5962c30a6f05ea1ab73f039e235bb30716243517 (from 194b3348bdbb7db65375c72f3f774aee4cc6614e) · < 36244dfd3853f7bf89d03b8e90d56b23ce7fbc16 (from 194b3348bdbb7db65375c72f3f774aee4cc6614e)
  • Linux / Linux
    6.3
    Fixed in 0, 5.10.252, 5.15.202, 6.1.165, 6.6.128, 6.12.75, 6.18.14, 6.19.4, 7.0
CVSS Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
References