{"id":"CVE-2026-89453","revision":"d95713f72c274613b14a87d78ea44a8f","records":[{"revision":"d95713f72c274613b14a87d78ea44a8f","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89453","aliases":[],"title":"iommu/amd: Put PCI device after handling PPR faults","description":"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.","state":0,"publishedAt":"2026-09-11T19:43:18.068+00:00","modifiedAt":"2026-10-19T08:47:02.825+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/amd/ppr.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"978d626b8f1a239acc635323d731c77eae54eb61\",\n                            \"lessThan\": \"1de4443f85e4405af00153cdf8ba73ff12a65036\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"978d626b8f1a239acc635323d731c77eae54eb61\",\n                            \"lessThan\": \"cfc5c1b2caa176dfd40b873a6ff07b11da34cc3e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"978d626b8f1a239acc635323d731c77eae54eb61\",\n                            \"lessThan\": \"d1470e16c1977e6c94fadf6048deafaa4d150fec\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"978d626b8f1a239acc635323d731c77eae54eb61\",\n                            \"lessThan\": \"af3b69b16383fbc8fe5f61b5b0150d2e41ede71f\",\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/amd/ppr.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.10\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.10\",\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/1de4443f85e4405af00153cdf8ba73ff12a65036","https://git.kernel.org/stable/c/cfc5c1b2caa176dfd40b873a6ff07b11da34cc3e","https://git.kernel.org/stable/c/d1470e16c1977e6c94fadf6048deafaa4d150fec","https://git.kernel.org/stable/c/af3b69b16383fbc8fe5f61b5b0150d2e41ede71f"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89453","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89453","identifiers":["CVE-2026-89453"]},"retained":false,"historicalAffected":[]}],"coverage":[]}