iommu/vt-d: Use device rbtree in iopf reporting path

{
  "id": "9128ec69faf83e21d1841431b70118f606e121400d2520cba33a87ba6bd4e02f",
  "url": "https://osv.dev/vulnerability/CVE-2024-35843",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "iommu/vt-d: Use device rbtree in iopf reporting path",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Use device rbtree in iopf reporting path The existing I/O page fault handler currently locates the PCI device by calling pci_get_domain_bus_and_slot(). This function searches the list of all PCI devices until the desired device is found. To improve lookup efficiency, replace it with device_rbtree_find() to search the device within the probed device rbtree. The I/O page fault is initiated by the device, which does not have any synchronization mechanism with the software to ensure that the device stays in the probed device tree. Theoretically, a device could be released by the IOMMU subsystem after device_rbtree_find() and before iopf_get_dev_fault_param(), which would cause a use-after-free problem. Add a mutex to synchronize the I/O page fault reporting path and the IOMMU release device path. This lock doesn't introduce any performance overhead, as the conflict between I/O page fault reporting and device releasing is very rare.",
    "evidence": "osv:CVE-2024-35843",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.8.2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2024-35843",
      "aliases": [
        "CVE-2024-35843"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "06f4b8d09dbabec631ed7b033f5d5413d86c7134"
                },
                {
                  "fixed": "3d39238991e745c5df85785604f037f35d9d1b15"
                },
                {
                  "fixed": "def054b01a867822254e1dda13d587f5c7a99e2a"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-35843.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.1.0"
                },
                {
                  "fixed": "6.8.2"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-35843.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:47.177227119Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/3d39238991e745c5df85785604f037f35d9d1b15",
        "https://git.kernel.org/stable/c/def054b01a867822254e1dda13d587f5c7a99e2a",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/35xxx/CVE-2024-35843.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-35843",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/35xxx/CVE-2024-35843.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-35843",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 514990,
  "published_at": "2024-05-17T14:40:10.747+00:00"
}