iavf: fix PTP use-after-free during reset_CVE-2026-43447

{
    "lastseen": "",
    "description": "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.",
    "published": "2026-05-08T14:22:13.988Z",
    "modified": "2026-05-11T06:34:36.012Z",
    "type": "cve",
    "title": "iavf: fix PTP use-after-free during reset",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/1b034f2429ce6b45ce74dc266175d277acafc5c4\nhttps://git.kernel.org/stable/c/90cc8b2add29b57288025b51c70bc647e7cccb12\nhttps://git.kernel.org/stable/c/efc54fb13d79117a825fef17364315a58682c7ec",
    "id": "CVE-2026-43447",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux 7c01dbfc8a1c5f8b8e4a7907ab06db1449d478d0\nLinux Linux 7c01dbfc8a1c5f8b8e4a7907ab06db1449d478d0\nLinux Linux 7c01dbfc8a1c5f8b8e4a7907ab06db1449d478d0\nLinux Linux 6.15",
    "sourceHref": "",
    "cvss": {
        "score": 7.8,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
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        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
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        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
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            "baseScore": 0,
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            "privilegesRequired": "",
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            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Linux",
    "version": "7c01dbfc8a1c5f8b8e4a7907ab06db1449d478d0",
    "vendor": "Linux",
    "ai_description": "",
    "ai_severity": "",
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    "ai_score": 0
}