ntb: ntb_hw_switchtec: Fix use after free vulnerability in switchtec_ntb_remove due to race condition

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  "url": "https://osv.dev/vulnerability/CVE-2024-50059",
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  "payload": {
    "kind": "advisory",
    "title": "ntb: ntb_hw_switchtec: Fix use after free vulnerability in switchtec_ntb_remove due to race condition",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: ntb: ntb_hw_switchtec: Fix use after free vulnerability in switchtec_ntb_remove due to race condition In the switchtec_ntb_add function, it can call switchtec_ntb_init_sndev function, then &sndev->check_link_status_work is bound with check_link_status_work. switchtec_ntb_link_notification may be called to start the work. If we remove the module which will call switchtec_ntb_remove to make cleanup, it will free sndev through kfree(sndev), while the work mentioned above will be used. The sequence of operations that may lead to a UAF bug is as follows: CPU0 CPU1 | check_link_status_work switchtec_ntb_remove | kfree(sndev); | | if (sndev->link_force_down) | // use sndev Fix it by ensuring that the work is canceled before proceeding with the cleanup in switchtec_ntb_remove.",
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      "modified": "2026-10-28T02:30:31.457756248Z",
      "provider": "osv",
      "references": [
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        "https://git.kernel.org/stable/c/3ae45be8492460a35b5aebf6acac1f1d32708946",
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        "https://git.kernel.org/stable/c/92728fceefdaa2a0a3aae675f86193b006eeaa43",
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        "https://git.kernel.org/stable/c/e51aded92d42784313ba16c12f4f88cc4f973bbb",
        "https://git.kernel.org/stable/c/fa840ba4bd9f3bad7f104e5b32028ee73af8b3dd",
        "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html",
        "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/50xxx/CVE-2024-50059.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-50059",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
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  "source_id": "core-osv",
  "document_id": 498366,
  "published_at": "2024-10-21T19:39:49.079+00:00"
}