{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-64591",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-07-19T15:36:31.798Z",
        "datePublished": "2026-08-06T07:13:48.490Z",
        "dateUpdated": "2026-08-17T04:58:12.761Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-17T04:58:12.761Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/vt-d: Avoid WARNING in sva unbind path\n\nThe Intel IOMMU driver allows SVA on devices even if they do not support\nPCI/PRI. Commit 39c20c4e83b9 (\"iommu/vt-d: Only handle IOPF for SVA when\nPRI is supported\") modified the SVA bind path to allow this configuration\nby skipping IOPF enablement when PRI is missing. However, it failed to\nupdate the unbind path.\n\nThis creates an imbalance: the unbind path attempts to disable IOPF for\na device that never had it enabled, triggering a WARNING in\nintel_iommu_disable_iopf():\n\n WARNING: drivers/iommu/intel/iommu.c:3475 at intel_iommu_disable_iopf+0x4f/0x90d\n Call Trace:\n  <TASK>\n  blocking_domain_set_dev_pasid+0x50/0x70\n  iommu_detach_device_pasid+0x89/0xc0\n  iommu_sva_unbind_device+0x73/0x150\n  xe_vm_close_and_put+0x4d2/0x1200 [xe]\n\nFix this by bypassing IOPF operations for SVA domains on non-PRI hardware\nin both the bind and unbind paths."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/iommu/intel/iommu.h",
                        "drivers/iommu/intel/svm.c"
                    ],
                    "versions": [
                        {
                            "version": "ee312bb1052e45cbccaf6abac1012db9ca43150a",
                            "lessThan": "bb354384f40bb087e7c44f0f0743a23fc945f91d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "39c20c4e83b9f78988541d829aa34668904e54a0",
                            "lessThan": "477f8dec3b5ae54e8ef3c33bdd2257e47896512e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "39c20c4e83b9f78988541d829aa34668904e54a0",
                            "lessThan": "534b5f98ab7319d8004bbc7dab6481462243e883",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "46461dabb95239aa05e31e247cd21151b8406642",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6.18.20",
                            "lessThan": "6.18.39",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.10",
                            "lessThan": "6.20",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/iommu/intel/iommu.h",
                        "drivers/iommu/intel/svm.c"
                    ],
                    "versions": [
                        {
                            "version": "7.0",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "7.0",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.39",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.4",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "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": "6.18.20",
                                    "versionEndExcluding": "6.18.39"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "7.0",
                                    "versionEndExcluding": "7.1.4"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "7.0",
                                    "versionEndExcluding": "7.2"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.19.10"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/bb354384f40bb087e7c44f0f0743a23fc945f91d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/477f8dec3b5ae54e8ef3c33bdd2257e47896512e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/534b5f98ab7319d8004bbc7dab6481462243e883"
                }
            ],
            "title": "iommu/vt-d: Avoid WARNING in sva unbind path",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}