{"api_version":"1","generated_at":"2026-09-13T04:09:00+00:00","cve":"CVE-2026-89451","urls":{"html":"https://cve.report/CVE-2026-89451","api":"https://cve.report/api/cve/CVE-2026-89451.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-89451","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-89451"},"summary":{"title":"iommu/sva: Set handle->dev before the SVA handle is visible","description":"In the Linux kernel, the following vulnerability has been resolved:\n\niommu/sva: Set handle->dev before the SVA handle is visible\n\niommu_attach_device_pasid() installs the new SVA attach handle in the\ngroup PASID lookup before iommu_sva_bind_device() returns. A concurrent\nbind can therefore find and reuse the same handle after iommu_sva_lock is\ndropped.\n\nhandle->dev was initialized after dropping iommu_sva_lock. This leaves a\nwindow where a racing bind can return a handle whose dev pointer is still\nNULL. A subsequent iommu_sva_unbind_device() can then dereference it via\nhandle->dev->iommu_group.\n\nInitialize handle->dev before releasing iommu_sva_lock so any visible SVA\nhandle is fully initialized.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-11 20:19:25","updated_at":"2026-09-11 20:19:25"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/bcffb1c75da8fc9d51168ff9f09d471c26507912","name":"https://git.kernel.org/stable/c/bcffb1c75da8fc9d51168ff9f09d471c26507912","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/968e9a1f71140c86dc4092f6b361e997923f3813","name":"https://git.kernel.org/stable/c/968e9a1f71140c86dc4092f6b361e997923f3813","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/37a96a30617a4c96f048a5874c00509bc4fe4d85","name":"https://git.kernel.org/stable/c/37a96a30617a4c96f048a5874c00509bc4fe4d85","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/530f8f9c3546cb3ebee1b135375aaee08a073ebb","name":"https://git.kernel.org/stable/c/530f8f9c3546cb3ebee1b135375aaee08a073ebb","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89451","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89451","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected be51b1d6bbff48c7d1943a8ff1e5a55777807f6e bcffb1c75da8fc9d51168ff9f09d471c26507912 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected be51b1d6bbff48c7d1943a8ff1e5a55777807f6e 968e9a1f71140c86dc4092f6b361e997923f3813 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected be51b1d6bbff48c7d1943a8ff1e5a55777807f6e 37a96a30617a4c96f048a5874c00509bc4fe4d85 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected be51b1d6bbff48c7d1943a8ff1e5a55777807f6e 530f8f9c3546cb3ebee1b135375aaee08a073ebb git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.2","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.2 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.109 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.50 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.4 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"89451","cve":"CVE-2026-89451","epss":"0.002000000","percentile":"0.099580000","score_date":"2026-09-12","updated_at":"2026-09-13 00:08:17"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/iommu/iommu-sva.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"bcffb1c75da8fc9d51168ff9f09d471c26507912","status":"affected","version":"be51b1d6bbff48c7d1943a8ff1e5a55777807f6e","versionType":"git"},{"lessThan":"968e9a1f71140c86dc4092f6b361e997923f3813","status":"affected","version":"be51b1d6bbff48c7d1943a8ff1e5a55777807f6e","versionType":"git"},{"lessThan":"37a96a30617a4c96f048a5874c00509bc4fe4d85","status":"affected","version":"be51b1d6bbff48c7d1943a8ff1e5a55777807f6e","versionType":"git"},{"lessThan":"530f8f9c3546cb3ebee1b135375aaee08a073ebb","status":"affected","version":"be51b1d6bbff48c7d1943a8ff1e5a55777807f6e","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/iommu/iommu-sva.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.2"},{"lessThan":"6.2","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.109","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.50","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.109","versionStartIncluding":"6.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.50","versionStartIncluding":"6.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.4","versionStartIncluding":"6.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"6.2","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\niommu/sva: Set handle->dev before the SVA handle is visible\n\niommu_attach_device_pasid() installs the new SVA attach handle in the\ngroup PASID lookup before iommu_sva_bind_device() returns. A concurrent\nbind can therefore find and reuse the same handle after iommu_sva_lock is\ndropped.\n\nhandle->dev was initialized after dropping iommu_sva_lock. This leaves a\nwindow where a racing bind can return a handle whose dev pointer is still\nNULL. A subsequent iommu_sva_unbind_device() can then dereference it via\nhandle->dev->iommu_group.\n\nInitialize handle->dev before releasing iommu_sva_lock so any visible SVA\nhandle is fully initialized."}],"providerMetadata":{"dateUpdated":"2026-09-11T19:43:16.730Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/bcffb1c75da8fc9d51168ff9f09d471c26507912"},{"url":"https://git.kernel.org/stable/c/968e9a1f71140c86dc4092f6b361e997923f3813"},{"url":"https://git.kernel.org/stable/c/37a96a30617a4c96f048a5874c00509bc4fe4d85"},{"url":"https://git.kernel.org/stable/c/530f8f9c3546cb3ebee1b135375aaee08a073ebb"}],"title":"iommu/sva: Set handle->dev before the SVA handle is visible","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-89451","datePublished":"2026-09-11T19:43:16.730Z","dateReserved":"2026-09-11T19:38:34.706Z","dateUpdated":"2026-09-11T19:43:16.730Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-11 20:19:25","lastModifiedDate":"2026-09-11 20:19:25","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"89451","Ordinal":"1","Title":"iommu/sva: Set handle->dev before the SVA handle is visible","CVE":"CVE-2026-89451","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"89451","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\niommu/sva: Set handle->dev before the SVA handle is visible\n\niommu_attach_device_pasid() installs the new SVA attach handle in the\ngroup PASID lookup before iommu_sva_bind_device() returns. A concurrent\nbind can therefore find and reuse the same handle after iommu_sva_lock is\ndropped.\n\nhandle->dev was initialized after dropping iommu_sva_lock. This leaves a\nwindow where a racing bind can return a handle whose dev pointer is still\nNULL. A subsequent iommu_sva_unbind_device() can then dereference it via\nhandle->dev->iommu_group.\n\nInitialize handle->dev before releasing iommu_sva_lock so any visible SVA\nhandle is fully initialized.","Type":"Description","Title":"iommu/sva: Set handle->dev before the SVA handle is visible"}]}}}