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NVD Vulnerability Details :

CVE-2026-64151

Received

Source-416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published At-19 Jul, 2026 | 16:17

Updated At-20 Jul, 2026 | 15:17

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.

Date Added	Due Date	Vulnerability Name	Required Action
	N/A

Metrics

Type	Version	Base score	Base severity	Vector
Secondary	3.1	8.4	HIGH	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

Type: Secondary

Version: 3.1

Base score: 8.4

Base severity: HIGH

Vector:

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

References

Hyperlink	Source	Resource
https://git.kernel.org/stable/c/00850f41da24423587abd6124a790dd4f12bcef3	416baaa9-dc9f-4396-8d5f-8c081fb06d67	N/A
https://git.kernel.org/stable/c/8ef3f77c440005c7f04229a75976bfc078364247	416baaa9-dc9f-4396-8d5f-8c081fb06d67	N/A

Hyperlink: https://git.kernel.org/stable/c/00850f41da24423587abd6124a790dd4f12bcef3

Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Resource: N/A

Hyperlink: https://git.kernel.org/stable/c/8ef3f77c440005c7f04229a75976bfc078364247

Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Resource: N/A

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