{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-89453",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-11T19:38:34.706Z",
        "datePublished": "2026-09-11T19:43:18.068Z",
        "dateUpdated": "2026-10-19T08:47:02.825Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T08:47:02.825Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/amd: Put PCI device after handling PPR faults\n\niommu_call_iopf_notifier() looks up the requester with\npci_get_domain_bus_and_slot(), which returns a PCI device with its\nreference count incremented.\n\nNeither the successful iommu_report_device_fault() path nor the abort\npath drops that reference, so every handled PPR request leaks a PCI\ndevice reference.\n\nThis is the same ownership rule that was fixed for the old iommu_v2\nppr_notifier() path by commit 6cf0981c2233 (\"iommu/amd: Fix pci device\nrefcount leak in ppr_notifier()\"), but iommu_call_iopf_notifier() was\nadded later as a separate PPR/IOPF notifier path.\n\nDrop the PCI device reference after handling the PPR entry."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/iommu/amd/ppr.c"
                    ],
                    "versions": [
                        {
                            "version": "978d626b8f1a239acc635323d731c77eae54eb61",
                            "lessThan": "1de4443f85e4405af00153cdf8ba73ff12a65036",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "978d626b8f1a239acc635323d731c77eae54eb61",
                            "lessThan": "cfc5c1b2caa176dfd40b873a6ff07b11da34cc3e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "978d626b8f1a239acc635323d731c77eae54eb61",
                            "lessThan": "d1470e16c1977e6c94fadf6048deafaa4d150fec",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "978d626b8f1a239acc635323d731c77eae54eb61",
                            "lessThan": "af3b69b16383fbc8fe5f61b5b0150d2e41ede71f",
                            "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/amd/ppr.c"
                    ],
                    "versions": [
                        {
                            "version": "6.10",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.10",
                            "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": "6.10",
                                    "versionEndExcluding": "6.12.109"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.10",
                                    "versionEndExcluding": "6.18.50"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.10",
                                    "versionEndExcluding": "7.2.4"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.10",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/1de4443f85e4405af00153cdf8ba73ff12a65036"
                },
                {
                    "url": "https://git.kernel.org/stable/c/cfc5c1b2caa176dfd40b873a6ff07b11da34cc3e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d1470e16c1977e6c94fadf6048deafaa4d150fec"
                },
                {
                    "url": "https://git.kernel.org/stable/c/af3b69b16383fbc8fe5f61b5b0150d2e41ede71f"
                }
            ],
            "title": "iommu/amd: Put PCI device after handling PPR faults",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}