{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-89451",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-11T19:38:34.706Z",
        "datePublished": "2026-09-11T19:43:16.730Z",
        "dateUpdated": "2026-10-21T12:47:29.668Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-21T12:47:29.668Z"
            },
            "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."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/iommu/iommu-sva.c"
                    ],
                    "versions": [
                        {
                            "version": "be51b1d6bbff48c7d1943a8ff1e5a55777807f6e",
                            "lessThan": "c4c71368bc5c5b3840590d39b4cfa12d733cadf4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "be51b1d6bbff48c7d1943a8ff1e5a55777807f6e",
                            "lessThan": "bcffb1c75da8fc9d51168ff9f09d471c26507912",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "be51b1d6bbff48c7d1943a8ff1e5a55777807f6e",
                            "lessThan": "968e9a1f71140c86dc4092f6b361e997923f3813",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "be51b1d6bbff48c7d1943a8ff1e5a55777807f6e",
                            "lessThan": "37a96a30617a4c96f048a5874c00509bc4fe4d85",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "be51b1d6bbff48c7d1943a8ff1e5a55777807f6e",
                            "lessThan": "530f8f9c3546cb3ebee1b135375aaee08a073ebb",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/iommu/iommu-sva.c"
                    ],
                    "versions": [
                        {
                            "version": "6.2",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.2",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.160",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.109",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.50",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.4",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.2",
                                    "versionEndExcluding": "6.6.160"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.2",
                                    "versionEndExcluding": "6.12.109"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.2",
                                    "versionEndExcluding": "6.18.50"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.2",
                                    "versionEndExcluding": "7.2.4"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.2",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/c4c71368bc5c5b3840590d39b4cfa12d733cadf4"
                },
                {
                    "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"
            }
        }
    }
}