ghsa-c7q5-6cjw-qjwq
Vulnerability from github
Published
2025-12-04 18:30
Modified
2025-12-07 00:30
Details

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

s390/ctcm: Fix double-kfree

The function 'mpc_rcvd_sweep_req(mpcginfo)' is called conditionally from function 'ctcmpc_unpack_skb'. It frees passed mpcginfo. After that a call to function 'kfree' in function 'ctcmpc_unpack_skb' frees it again.

Remove 'kfree' call in function 'mpc_rcvd_sweep_req(mpcginfo)'.

Bug detected by the clang static analyzer.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-40253"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-04T16:16:18Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/ctcm: Fix double-kfree\n\nThe function \u0027mpc_rcvd_sweep_req(mpcginfo)\u0027 is called conditionally\nfrom function \u0027ctcmpc_unpack_skb\u0027. It frees passed mpcginfo.\nAfter that a call to function \u0027kfree\u0027 in function \u0027ctcmpc_unpack_skb\u0027\nfrees it again.\n\nRemove \u0027kfree\u0027 call in function \u0027mpc_rcvd_sweep_req(mpcginfo)\u0027.\n\nBug detected by the clang static analyzer.",
  "id": "GHSA-c7q5-6cjw-qjwq",
  "modified": "2025-12-07T00:30:56Z",
  "published": "2025-12-04T18:30:53Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40253"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/06f1dd1de0d33dbfbd2e1fc9fc57d8895f730de2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3b177b2ded563df16f6d5920671ffcfe5915d472"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/43096dab8cc60fc39133205fd149a54d3acebea8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6bf8ccaabce8cebb6cb1f255c93d0acdfe95c17a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7616e2eee679746d526c7f5befd4eedb995935b5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7ff76f8dc6b550f8d16487bf3cebc278be720b5c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b9dbfb1b5699f9f1e4991f96741bdf9047147589"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/da02a1824884d6c84c5e5b5ac373b0c9e3288ec2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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