iommupt: Check for missing PAGE_SIZE in the pgsize_bitmap
Summary
| CVE | CVE-2026-64151 |
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| State | PUBLISHED |
|---|
| Assigner | Linux |
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| Source Priority | CVE Program / NVD first with legacy fallback |
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| Published | 2026-07-19 16:17:57 UTC |
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| Updated | 2026-07-19 16:17:57 UTC |
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| 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. |
|---|
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|
| CNA |
Linux |
Linux |
affected dcd6a011a8d523a114af2360a8753de5bd60c139 00850f41da24423587abd6124a790dd4f12bcef3 git |
Not specified |
| CNA |
Linux |
Linux |
affected dcd6a011a8d523a114af2360a8753de5bd60c139 8ef3f77c440005c7f04229a75976bfc078364247 git |
Not specified |
| CNA |
Linux |
Linux |
affected 6.19 |
Not specified |
| CNA |
Linux |
Linux |
unaffected 6.19 semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 7.0.11 7.0.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 7.1 * original_commit_for_fix |
Not specified |
References
| Reference | Source | Link | Tags |
|---|
| git.kernel.org/stable/c/00850f41da24423587abd6124a790dd4f12bcef3 |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/8ef3f77c440005c7f04229a75976bfc078364247 |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| CVE Program record |
CVE.ORG |
www.cve.org |
canonical |
| NVD vulnerability detail |
NVD |
nvd.nist.gov |
canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.
