HighFix available
iommu/vt-d: Flush cache for PASID table before using it
Type: advisorySources: OSV
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.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.252, 5.15.202, 6.1.165, 6.12.75, 6.18.14, 6.19.4, 6.6.128
- CVEs
- CVE-2026-45862
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 17:36 UTC · Revision 1
Source evidence
iommu/vt-d: Flush cache for PASID table before using it
core-osv · Original sourcePublished 27 May 2026, 12:15 UTC
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.
osv:CVE-2026-45862
Kernel
Fixed versions: 5.10.252, 5.15.202, 6.1.165, 6.6.128, 6.12.75, 6.18.14, 6.19.4
Complete source record
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