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high7.8

CVE-2026-45862

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 fresh…

Impact

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.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 5.4.237 before 5.5
from 5.10.175 before 5.10.252
from 5.15.103 before 5.15.202
from 6.1.16 before 6.1.165
from 6.2.3 before 6.6.128
from 6.7 before 6.12.75

Weakness classification

CWE-362

References