VULNERABILITY INTELLIGENCE
CVE-2026-64151
CVSS score8.4 HIGH
EPSS probability0.16%
CISA KEVNot currently listed
Published2026-07-19
Last modified2026-08-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
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.
Weakness classification
- nvd@nist.gov: NVD-CWE-noinfo