{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "978d626b8f1a239acc635323d731c77eae54eb61"
            },
            {
              "fixed": "1de4443f85e4405af00153cdf8ba73ff12a65036"
            },
            {
              "fixed": "cfc5c1b2caa176dfd40b873a6ff07b11da34cc3e"
            },
            {
              "fixed": "d1470e16c1977e6c94fadf6048deafaa4d150fec"
            },
            {
              "fixed": "af3b69b16383fbc8fe5f61b5b0150d2e41ede71f"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.10.0"
            },
            {
              "fixed": "6.12.109"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.50"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89453.json"
  },
  "details": "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.",
  "id": "CVE-2026-89453",
  "modified": "2026-09-13T03:30:59.537082532Z",
  "published": "2026-09-11T19:43:18.068Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1de4443f85e4405af00153cdf8ba73ff12a65036"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/af3b69b16383fbc8fe5f61b5b0150d2e41ede71f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cfc5c1b2caa176dfd40b873a6ff07b11da34cc3e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d1470e16c1977e6c94fadf6048deafaa4d150fec"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89453.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89453"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "iommu/amd: Put PCI device after handling PPR faults"
}