{"api_version":"1","generated_at":"2026-07-20T14:41:59+00:00","cve":"CVE-2026-64151","urls":{"html":"https://cve.report/CVE-2026-64151","api":"https://cve.report/api/cve/CVE-2026-64151.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64151","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64151"},"summary":{"title":"iommupt: Check for missing PAGE_SIZE in the pgsize_bitmap","description":"In the Linux kernel, the following vulnerability has been resolved:\n\niommupt: Check for missing PAGE_SIZE in the pgsize_bitmap\n\nSashiko pointed out that the driver could drop PAGE_SIZE from the\npgsize_bitmap. That is technically allowed but nothing does it, and\nsuch an iommu_domain would not be used with the DMA API today.\n\nStill, it is against the design and it is trivial to fix up. Lift\nthe PT_WARN_ON to the if branch and just skip the fast path.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-19 16:17:57","updated_at":"2026-07-19 16:17:57"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/00850f41da24423587abd6124a790dd4f12bcef3","name":"https://git.kernel.org/stable/c/00850f41da24423587abd6124a790dd4f12bcef3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8ef3f77c440005c7f04229a75976bfc078364247","name":"https://git.kernel.org/stable/c/8ef3f77c440005c7f04229a75976bfc078364247","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64151","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64151","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected dcd6a011a8d523a114af2360a8753de5bd60c139 00850f41da24423587abd6124a790dd4f12bcef3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected dcd6a011a8d523a114af2360a8753de5bd60c139 8ef3f77c440005c7f04229a75976bfc078364247 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.19","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.11 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/iommu/generic_pt/iommu_pt.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"00850f41da24423587abd6124a790dd4f12bcef3","status":"affected","version":"dcd6a011a8d523a114af2360a8753de5bd60c139","versionType":"git"},{"lessThan":"8ef3f77c440005c7f04229a75976bfc078364247","status":"affected","version":"dcd6a011a8d523a114af2360a8753de5bd60c139","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/iommu/generic_pt/iommu_pt.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.19"},{"lessThan":"6.19","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.11","versionStartIncluding":"6.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"6.19","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\niommupt: Check for missing PAGE_SIZE in the pgsize_bitmap\n\nSashiko pointed out that the driver could drop PAGE_SIZE from the\npgsize_bitmap. That is technically allowed but nothing does it, and\nsuch an iommu_domain would not be used with the DMA API today.\n\nStill, it is against the design and it is trivial to fix up. Lift\nthe PT_WARN_ON to the if branch and just skip the fast path."}],"providerMetadata":{"dateUpdated":"2026-07-19T15:40:40.643Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/00850f41da24423587abd6124a790dd4f12bcef3"},{"url":"https://git.kernel.org/stable/c/8ef3f77c440005c7f04229a75976bfc078364247"}],"title":"iommupt: Check for missing PAGE_SIZE in the pgsize_bitmap","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64151","datePublished":"2026-07-19T15:40:40.643Z","dateReserved":"2026-07-19T07:54:57.037Z","dateUpdated":"2026-07-19T15:40:40.643Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-19 16:17:57","lastModifiedDate":"2026-07-19 16:17:57","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64151","Ordinal":"1","Title":"iommupt: Check for missing PAGE_SIZE in the pgsize_bitmap","CVE":"CVE-2026-64151","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64151","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\niommupt: Check for missing PAGE_SIZE in the pgsize_bitmap\n\nSashiko pointed out that the driver could drop PAGE_SIZE from the\npgsize_bitmap. That is technically allowed but nothing does it, and\nsuch an iommu_domain would not be used with the DMA API today.\n\nStill, it is against the design and it is trivial to fix up. Lift\nthe PT_WARN_ON to the if branch and just skip the fast path.","Type":"Description","Title":"iommupt: Check for missing PAGE_SIZE in the pgsize_bitmap"}]}}}