{"id":"CVE-2026-89451","summary":"iommu/sva: Set handle-\u003edev before the SVA handle is visible","details":"In the Linux kernel, the following vulnerability has been resolved:\n\niommu/sva: Set handle-\u003edev 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-\u003edev 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-\u003edev-\u003eiommu_group.\n\nInitialize handle-\u003edev before releasing iommu_sva_lock so any visible SVA\nhandle is fully initialized.","modified":"2026-09-13T03:47:18.076094643Z","published":"2026-09-11T19:43:16.730Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89451.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/37a96a30617a4c96f048a5874c00509bc4fe4d85"},{"type":"WEB","url":"https://git.kernel.org/stable/c/530f8f9c3546cb3ebee1b135375aaee08a073ebb"},{"type":"WEB","url":"https://git.kernel.org/stable/c/968e9a1f71140c86dc4092f6b361e997923f3813"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bcffb1c75da8fc9d51168ff9f09d471c26507912"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89451.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89451"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"be51b1d6bbff48c7d1943a8ff1e5a55777807f6e"},{"fixed":"bcffb1c75da8fc9d51168ff9f09d471c26507912"},{"fixed":"968e9a1f71140c86dc4092f6b361e997923f3813"},{"fixed":"37a96a30617a4c96f048a5874c00509bc4fe4d85"},{"fixed":"530f8f9c3546cb3ebee1b135375aaee08a073ebb"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89451.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.12.109"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.50"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89451.json"}}],"schema_version":"1.9.0"}