CVE-2026-45862

HIGH

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

Title source: cna
STIX 2.1

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.

Scores

CVSS v3 7.8
EPSS 0.0015
EPSS Percentile 4.5%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Details

Status published
Products (33)
linux/Kernel < 5.10.252linux
linux/Kernel 5.11.0 - 5.15.202linux
linux/Kernel 5.16.0 - 6.1.165linux
linux/Kernel 6.13.0 - 6.19.4linux
linux/Kernel 6.2.0 - 6.6.128linux
linux/Kernel 6.3.0 - 6.12.75linux
linux/Kernel 6.7.0 - 6.18.14linux
Linux/Linux < 6.3
Linux/Linux 194b3348bdbb7db65375c72f3f774aee4cc6614e - 22d169bdd2849fe6bd18c2643742e1c02be6451c
Linux/Linux 194b3348bdbb7db65375c72f3f774aee4cc6614e - 36244dfd3853f7bf89d03b8e90d56b23ce7fbc16
... and 23 more
Published May 27, 2026
Tracked Since May 27, 2026