{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "7c01dbfc8a1c5f8b8e4a7907ab06db1449d478d0"
            },
            {
              "fixed": "1b034f2429ce6b45ce74dc266175d277acafc5c4"
            },
            {
              "fixed": "90cc8b2add29b57288025b51c70bc647e7cccb12"
            },
            {
              "fixed": "efc54fb13d79117a825fef17364315a58682c7ec"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.15.0"
            },
            {
              "fixed": "6.18.19"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43447.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\niavf: fix PTP use-after-free during reset\n\nCommit 7c01dbfc8a1c5f (\"iavf: periodically cache PHC time\") introduced a\nworker to cache PHC time, but failed to stop it during reset or disable.\n\nThis creates a race condition where `iavf_reset_task()` or\n`iavf_disable_vf()` free adapter resources (AQ) while the worker is still\nrunning. If the worker triggers `iavf_queue_ptp_cmd()` during teardown, it\naccesses freed memory/locks, leading to a crash.\n\nFix this by calling `iavf_ptp_release()` before tearing down the adapter.\nThis ensures `ptp_clock_unregister()` synchronously cancels the worker and\ncleans up the chardev before the backing resources are destroyed.",
  "id": "CVE-2026-43447",
  "modified": "2026-07-15T01:49:02.114619444Z",
  "published": "2026-05-08T14:22:13.988Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1b034f2429ce6b45ce74dc266175d277acafc5c4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/90cc8b2add29b57288025b51c70bc647e7cccb12"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/efc54fb13d79117a825fef17364315a58682c7ec"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43447.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43447"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "iavf: fix PTP use-after-free during reset"
}