ghsa-cp59-hf68-p4rg
Vulnerability from github
Published
2025-06-18 12:30
Modified
2025-06-18 12:30
Details

In the Linux kernel, the following vulnerability has been resolved:

kcm: fix strp_init() order and cleanup

strp_init() is called just a few lines above this csk->sk_user_data check, it also initializes strp->work etc., therefore, it is unnecessary to call strp_done() to cancel the freshly initialized work.

And if sk_user_data is already used by KCM, psock->strp should not be touched, particularly strp->work state, so we need to move strp_init() after the csk->sk_user_data check.

This also makes a lockdep warning reported by syzbot go away.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49957"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-06-18T11:15:22Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nkcm: fix strp_init() order and cleanup\n\nstrp_init() is called just a few lines above this csk-\u003esk_user_data\ncheck, it also initializes strp-\u003ework etc., therefore, it is\nunnecessary to call strp_done() to cancel the freshly initialized\nwork.\n\nAnd if sk_user_data is already used by KCM, psock-\u003estrp should not be\ntouched, particularly strp-\u003ework state, so we need to move strp_init()\nafter the csk-\u003esk_user_data check.\n\nThis also makes a lockdep warning reported by syzbot go away.",
  "id": "GHSA-cp59-hf68-p4rg",
  "modified": "2025-06-18T12:30:37Z",
  "published": "2025-06-18T12:30:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49957"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0946ff31d1a8778787bf6708beb20f38715267cc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1b6666964ca1de93a7bf06e122bcf3616dbd33a9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/473f394953216614087f4179e55cdf0cf616a13b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/55fb8c3baa8071c5d533a9ad48624e44e2a04ef5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8fc29ff3910f3af08a7c40a75d436b5720efe2bf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a8a0c321319ad64a5427d6172cd9c23b4d6ca1e8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f865976baa85915c7672f351b74d5974b93215f6"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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