CVE-2026-64151
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
19/07/2026
Last modified:
20/07/2026
Description
In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
iommupt: Check for missing PAGE_SIZE in the pgsize_bitmap<br />
<br />
Sashiko pointed out that the driver could drop PAGE_SIZE from the<br />
pgsize_bitmap. That is technically allowed but nothing does it, and<br />
such an iommu_domain would not be used with the DMA API today.<br />
<br />
Still, it is against the design and it is trivial to fix up. Lift<br />
the PT_WARN_ON to the if branch and just skip the fast path.
Impact
Base Score 3.x
8.40
Severity 3.x
HIGH