{"id":"CVE-2026-89451","revision":"e325899b63fb4d45bf4d19deea295fd2","records":[{"revision":"e325899b63fb4d45bf4d19deea295fd2","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89451","aliases":[],"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":0,"publishedAt":"2026-09-11T19:43:16.73+00:00","modifiedAt":"2026-10-21T12:47:29.668+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/iommu/iommu-sva.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"be51b1d6bbff48c7d1943a8ff1e5a55777807f6e\",\n                            \"lessThan\": \"c4c71368bc5c5b3840590d39b4cfa12d733cadf4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"be51b1d6bbff48c7d1943a8ff1e5a55777807f6e\",\n                            \"lessThan\": \"bcffb1c75da8fc9d51168ff9f09d471c26507912\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"be51b1d6bbff48c7d1943a8ff1e5a55777807f6e\",\n                            \"lessThan\": \"968e9a1f71140c86dc4092f6b361e997923f3813\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"be51b1d6bbff48c7d1943a8ff1e5a55777807f6e\",\n                            \"lessThan\": \"37a96a30617a4c96f048a5874c00509bc4fe4d85\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"be51b1d6bbff48c7d1943a8ff1e5a55777807f6e\",\n                            \"lessThan\": \"530f8f9c3546cb3ebee1b135375aaee08a073ebb\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/iommu/iommu-sva.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.2\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.160\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.109\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.50\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.4\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/c4c71368bc5c5b3840590d39b4cfa12d733cadf4","https://git.kernel.org/stable/c/bcffb1c75da8fc9d51168ff9f09d471c26507912","https://git.kernel.org/stable/c/968e9a1f71140c86dc4092f6b361e997923f3813","https://git.kernel.org/stable/c/37a96a30617a4c96f048a5874c00509bc4fe4d85","https://git.kernel.org/stable/c/530f8f9c3546cb3ebee1b135375aaee08a073ebb"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89451","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89451","identifiers":["CVE-2026-89451"]},"retained":false,"historicalAffected":[]}],"coverage":[]}