CVE-2026-64151

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.

Score
CVSS 3.1 8.4 High
Status
Analyzed - 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-07-19
Last modified
2026-08-05

Affected products

References

 
 
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