CVE-2026-45862
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
27/05/2026
Last modified:
30/05/2026
Description
In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
iommu/vt-d: Flush cache for PASID table before using it<br />
<br />
When writing the address of a freshly allocated zero-initialized PASID<br />
table to a PASID directory entry, do that after the CPU cache flush for<br />
this PASID table, not before it, to avoid the time window when this<br />
PASID table may be already used by non-coherent IOMMU hardware while<br />
its contents in RAM is still some random old data, not zero-initialized.
Impact
Base Score 3.x
7.80
Severity 3.x
HIGH
References to Advisories, Solutions, and Tools
- https://git.kernel.org/stable/c/0616137b70e6d9a547d4b60df8e1b64e36d83661
- https://git.kernel.org/stable/c/22d169bdd2849fe6bd18c2643742e1c02be6451c
- https://git.kernel.org/stable/c/36244dfd3853f7bf89d03b8e90d56b23ce7fbc16
- https://git.kernel.org/stable/c/36990407cdd257473607e33802d00e978af2759e
- https://git.kernel.org/stable/c/5962c30a6f05ea1ab73f039e235bb30716243517
- https://git.kernel.org/stable/c/c93f23375d8c410954b0df825e814b632fd62b9d
- https://git.kernel.org/stable/c/cd75e77125c8a51754ca4cd60b4ca083ed735d1d
- https://git.kernel.org/stable/c/d15cda135148ea7ba929cfdbcf208182bc29a7aa