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CVE PROGRAM SOURCE RECORD8.4 High

CVE-2026-64151

iommupt: Check for missing PAGE_SIZE in the pgsize_bitmap

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: iommupt: Check for missing PAGE_SIZE in the pgsize_bitmap Sashiko pointed out that the driver could drop PAGE_SIZE from the pgsize_bitmap. That is technically allowed but nothing does it, and such an iommu_domain would not be used with the DMA API today. Still, it is against the design and it is trivial to fix up. Lift the PT_WARN_ON to the if branch and just skip the fast path.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • dcd6a011a8d523a114af2360a8753de5bd60c139 to < 00850f41da24423587abd6124a790dd4f12bcef3affected
  • dcd6a011a8d523a114af2360a8753de5bd60c139 to < 8ef3f77c440005c7f04229a75976bfc078364247affected

Linux Linux

Default version status: affected

  • 6.19affected
  • 0 to < 6.19unaffected
  • 7.0.11 to ≤ 7.0.*unaffected
  • 7.1 to ≤ *unaffected

References