CVE-2026-64151
- Source
- https://cve.org/CVERecord?id=CVE-2026-64151
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-64151.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2026-64151
- Downstream
- Published
- 2026-07-19T15:40:40Z
- Modified
- 2026-08-19T03:31:13Z
- Severity
-
- 8.4 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N CVSS Calculator
- Summary
- iommupt: Check for missing PAGE_SIZE in the pgsize_bitmap
- Details
-
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.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64151.json" }- References
-
- https://git.kernel.org/stable/c/00850f41da24423587abd6124a790dd4f12bcef3
- https://git.kernel.org/stable/c/8ef3f77c440005c7f04229a75976bfc078364247
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64151.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-64151
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git