{"api_version":"1","generated_at":"2026-07-20T14:41:58+00:00","cve":"CVE-2026-64152","urls":{"html":"https://cve.report/CVE-2026-64152","api":"https://cve.report/api/cve/CVE-2026-64152.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64152","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64152"},"summary":{"title":"iommu: Handle unmap error when iommu_debug is enabled","description":"In the Linux kernel, the following vulnerability has been resolved:\n\niommu: Handle unmap error when iommu_debug is enabled\n\nSashiko noticed a latent bug where the map error flow called iommu_unmap()\nwhich calls iommu_debug_unmap_begin()/iommu_debug_unmap_end() however\nsince this is an error path the map flow never actually established the\noriginal iommu_debug_map() it will malfunction.\n\nLift the unmap error handling into iommu_map_nosync() and reorder it so\nthe trace_map()/iommu_debug_map() records the partial mapping and then\nimmediately unmaps it. This avoid creating the unbalanced tracking and\nprovides saner tracing instead of a unmap unmatched to any map.","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/0735c54804c709d1b292f3b6947cfb560b2ce552","name":"https://git.kernel.org/stable/c/0735c54804c709d1b292f3b6947cfb560b2ce552","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0cd028806efc148a75d4acf711d21db335a89661","name":"https://git.kernel.org/stable/c/0cd028806efc148a75d4acf711d21db335a89661","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64152","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64152","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ccc21213f013834b484cdcc738e282f963fcfc97 0cd028806efc148a75d4acf711d21db335a89661 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ccc21213f013834b484cdcc738e282f963fcfc97 0735c54804c709d1b292f3b6947cfb560b2ce552 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7.0","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 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/iommu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"0cd028806efc148a75d4acf711d21db335a89661","status":"affected","version":"ccc21213f013834b484cdcc738e282f963fcfc97","versionType":"git"},{"lessThan":"0735c54804c709d1b292f3b6947cfb560b2ce552","status":"affected","version":"ccc21213f013834b484cdcc738e282f963fcfc97","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/iommu/iommu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"7.0"},{"lessThan":"7.0","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":"7.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"7.0","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\niommu: Handle unmap error when iommu_debug is enabled\n\nSashiko noticed a latent bug where the map error flow called iommu_unmap()\nwhich calls iommu_debug_unmap_begin()/iommu_debug_unmap_end() however\nsince this is an error path the map flow never actually established the\noriginal iommu_debug_map() it will malfunction.\n\nLift the unmap error handling into iommu_map_nosync() and reorder it so\nthe trace_map()/iommu_debug_map() records the partial mapping and then\nimmediately unmaps it. This avoid creating the unbalanced tracking and\nprovides saner tracing instead of a unmap unmatched to any map."}],"providerMetadata":{"dateUpdated":"2026-07-19T15:40:41.354Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/0cd028806efc148a75d4acf711d21db335a89661"},{"url":"https://git.kernel.org/stable/c/0735c54804c709d1b292f3b6947cfb560b2ce552"}],"title":"iommu: Handle unmap error when iommu_debug is enabled","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64152","datePublished":"2026-07-19T15:40:41.354Z","dateReserved":"2026-07-19T07:54:57.037Z","dateUpdated":"2026-07-19T15:40:41.354Z","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":"64152","Ordinal":"1","Title":"iommu: Handle unmap error when iommu_debug is enabled","CVE":"CVE-2026-64152","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64152","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\niommu: Handle unmap error when iommu_debug is enabled\n\nSashiko noticed a latent bug where the map error flow called iommu_unmap()\nwhich calls iommu_debug_unmap_begin()/iommu_debug_unmap_end() however\nsince this is an error path the map flow never actually established the\noriginal iommu_debug_map() it will malfunction.\n\nLift the unmap error handling into iommu_map_nosync() and reorder it so\nthe trace_map()/iommu_debug_map() records the partial mapping and then\nimmediately unmaps it. This avoid creating the unbalanced tracking and\nprovides saner tracing instead of a unmap unmatched to any map.","Type":"Description","Title":"iommu: Handle unmap error when iommu_debug is enabled"}]}}}