CVE-2026-64151: Linux Kernel

High severity, CVSS 8.4. EPSS: 0.2% chance of exploitation in the next 30 days.

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

• Linux Linux Kernel: from 6.19, before 7.0.11 (fixed in 7.0.11); version 7.1 only

Published 2026-07-19. Last modified 2026-08-17.