{"api_version":"1","generated_at":"2026-09-07T19:49:53+00:00","cve":"CVE-2026-80894","urls":{"html":"https://cve.report/CVE-2026-80894","api":"https://cve.report/api/cve/CVE-2026-80894.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-80894","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-80894"},"summary":{"title":"iommufd: Fix wrong hwpt passed to iommufd_auto_response_faults on replace","description":"In the Linux kernel, the following vulnerability has been resolved:\n\niommufd: Fix wrong hwpt passed to iommufd_auto_response_faults on replace\n\niommufd_hwpt_replace_device() calls:\n\n\tiommufd_auto_response_faults(hwpt, old_handle);\n\npassing the *new* hwpt together with the handle of\nthe device's *old* domain. This should be a parameter mismatch:\n\n1. Semantically, iommufd_auto_response_faults(x, handle) scans\n   x->fault's deliver list and response xarray for groups matching\n   \"handle\". A group is queued under the hwpt that was attached at\n   fault-delivery time. old_handle is fetched *before* the domain switch,\n   so its group lives on old->fault, not on the new hwpt->fault.\n\n2. Historically, the first argument was \"old\". The routine was\n   introduced by commit b7d8833677ba (\"iommufd: Fault-capable hwpt\n   attach/detach/replace\") as __fault_domain_replace_dev() in\n   fault.c, correctly calling iommufd_auto_response_faults(old, curr).\n   Commit fb21b1568ada (\"iommufd: Make attach_handle generic than\n   fault specific\") moved this into iommufd_hwpt_replace_device() in\n   device.c and swapped it to \"hwpt\". This should be a refactor regression,\n   not an intentional change.\n\nFix this by passing \"old\" instead.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-04 18:17:57","updated_at":"2026-09-04 18:17:57"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/ba5c0f28a26e7d9be1e0997f8920dd638e2782fd","name":"https://git.kernel.org/stable/c/ba5c0f28a26e7d9be1e0997f8920dd638e2782fd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8eb077025279304268bd58657f0af3d388822b21","name":"https://git.kernel.org/stable/c/8eb077025279304268bd58657f0af3d388822b21","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/564ac339c0f8bada4e77a57a92bab9d3df635e07","name":"https://git.kernel.org/stable/c/564ac339c0f8bada4e77a57a92bab9d3df635e07","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/adb87155b67f9759ff010c0a99559f5bffa45dcf","name":"https://git.kernel.org/stable/c/adb87155b67f9759ff010c0a99559f5bffa45dcf","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80894","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80894","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6d11543bf37abdf60b8e6022a62fccfb82a5fe2e adb87155b67f9759ff010c0a99559f5bffa45dcf git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected fb21b1568adaa76af7a8c853f37c60fba8b28661 564ac339c0f8bada4e77a57a92bab9d3df635e07 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected fb21b1568adaa76af7a8c853f37c60fba8b28661 8eb077025279304268bd58657f0af3d388822b21 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected fb21b1568adaa76af7a8c853f37c60fba8b28661 ba5c0f28a26e7d9be1e0997f8920dd638e2782fd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1e0216b6a58c79b5ee91c78706d5f560e4d1f56f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4b23c4b991eb90cc7bca42e9f81142feedd4bb56 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.12.24 6.12.105 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.13.12 6.14 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.14.3 6.15 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.15","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.15 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.105 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.44 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.8 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"80894","cve":"CVE-2026-80894","epss":"0.001680000","percentile":"0.063210000","score_date":"2026-09-06","updated_at":"2026-09-07 00:06:16"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/iommu/iommufd/device.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"adb87155b67f9759ff010c0a99559f5bffa45dcf","status":"affected","version":"6d11543bf37abdf60b8e6022a62fccfb82a5fe2e","versionType":"git"},{"lessThan":"564ac339c0f8bada4e77a57a92bab9d3df635e07","status":"affected","version":"fb21b1568adaa76af7a8c853f37c60fba8b28661","versionType":"git"},{"lessThan":"8eb077025279304268bd58657f0af3d388822b21","status":"affected","version":"fb21b1568adaa76af7a8c853f37c60fba8b28661","versionType":"git"},{"lessThan":"ba5c0f28a26e7d9be1e0997f8920dd638e2782fd","status":"affected","version":"fb21b1568adaa76af7a8c853f37c60fba8b28661","versionType":"git"},{"status":"affected","version":"1e0216b6a58c79b5ee91c78706d5f560e4d1f56f","versionType":"git"},{"status":"affected","version":"4b23c4b991eb90cc7bca42e9f81142feedd4bb56","versionType":"git"},{"lessThan":"6.12.105","status":"affected","version":"6.12.24","versionType":"semver"},{"lessThan":"6.14","status":"affected","version":"6.13.12","versionType":"semver"},{"lessThan":"6.15","status":"affected","version":"6.14.3","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/iommu/iommufd/device.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.15"},{"lessThan":"6.15","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.105","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.44","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.8","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.105","versionStartIncluding":"6.12.24","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.44","versionStartIncluding":"6.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.8","versionStartIncluding":"6.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","versionStartIncluding":"6.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14.3","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\niommufd: Fix wrong hwpt passed to iommufd_auto_response_faults on replace\n\niommufd_hwpt_replace_device() calls:\n\n\tiommufd_auto_response_faults(hwpt, old_handle);\n\npassing the *new* hwpt together with the handle of\nthe device's *old* domain. This should be a parameter mismatch:\n\n1. Semantically, iommufd_auto_response_faults(x, handle) scans\n   x->fault's deliver list and response xarray for groups matching\n   \"handle\". A group is queued under the hwpt that was attached at\n   fault-delivery time. old_handle is fetched *before* the domain switch,\n   so its group lives on old->fault, not on the new hwpt->fault.\n\n2. Historically, the first argument was \"old\". The routine was\n   introduced by commit b7d8833677ba (\"iommufd: Fault-capable hwpt\n   attach/detach/replace\") as __fault_domain_replace_dev() in\n   fault.c, correctly calling iommufd_auto_response_faults(old, curr).\n   Commit fb21b1568ada (\"iommufd: Make attach_handle generic than\n   fault specific\") moved this into iommufd_hwpt_replace_device() in\n   device.c and swapped it to \"hwpt\". This should be a refactor regression,\n   not an intentional change.\n\nFix this by passing \"old\" instead."}],"providerMetadata":{"dateUpdated":"2026-09-04T17:11:10.093Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/adb87155b67f9759ff010c0a99559f5bffa45dcf"},{"url":"https://git.kernel.org/stable/c/564ac339c0f8bada4e77a57a92bab9d3df635e07"},{"url":"https://git.kernel.org/stable/c/8eb077025279304268bd58657f0af3d388822b21"},{"url":"https://git.kernel.org/stable/c/ba5c0f28a26e7d9be1e0997f8920dd638e2782fd"}],"title":"iommufd: Fix wrong hwpt passed to iommufd_auto_response_faults on replace","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-80894","datePublished":"2026-09-04T17:11:10.093Z","dateReserved":"2026-08-26T14:34:25.800Z","dateUpdated":"2026-09-04T17:11:10.093Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-04 18:17:57","lastModifiedDate":"2026-09-04 18:17:57","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"80894","Ordinal":"1","Title":"iommufd: Fix wrong hwpt passed to iommufd_auto_response_faults o","CVE":"CVE-2026-80894","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"80894","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\niommufd: Fix wrong hwpt passed to iommufd_auto_response_faults on replace\n\niommufd_hwpt_replace_device() calls:\n\n\tiommufd_auto_response_faults(hwpt, old_handle);\n\npassing the *new* hwpt together with the handle of\nthe device's *old* domain. This should be a parameter mismatch:\n\n1. Semantically, iommufd_auto_response_faults(x, handle) scans\n   x->fault's deliver list and response xarray for groups matching\n   \"handle\". A group is queued under the hwpt that was attached at\n   fault-delivery time. old_handle is fetched *before* the domain switch,\n   so its group lives on old->fault, not on the new hwpt->fault.\n\n2. Historically, the first argument was \"old\". The routine was\n   introduced by commit b7d8833677ba (\"iommufd: Fault-capable hwpt\n   attach/detach/replace\") as __fault_domain_replace_dev() in\n   fault.c, correctly calling iommufd_auto_response_faults(old, curr).\n   Commit fb21b1568ada (\"iommufd: Make attach_handle generic than\n   fault specific\") moved this into iommufd_hwpt_replace_device() in\n   device.c and swapped it to \"hwpt\". This should be a refactor regression,\n   not an intentional change.\n\nFix this by passing \"old\" instead.","Type":"Description","Title":"iommufd: Fix wrong hwpt passed to iommufd_auto_response_faults o"}]}}}