{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2025-40253",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2025-40253"
  ],
  "published": "2025-12-04T16:09:50Z",
  "summary": "s390/ctcm: Fix double-kfree",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/ctcm: Fix double-kfree\n\nThe function 'mpc_rcvd_sweep_req(mpcginfo)' is called conditionally\nfrom function 'ctcmpc_unpack_skb'. It frees passed mpcginfo.\nAfter that a call to function 'kfree' in function 'ctcmpc_unpack_skb'\nfrees it again.\n\nRemove 'kfree' call in function 'mpc_rcvd_sweep_req(mpcginfo)'.\n\nBug detected by the clang static analyzer.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.159",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-40253"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/06f1dd1de0d33dbfbd2e1fc9fc57d8895f730de2"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/6bf8ccaabce8cebb6cb1f255c93d0acdfe95c17a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7616e2eee679746d526c7f5befd4eedb995935b5"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/43096dab8cc60fc39133205fd149a54d3acebea8"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3b177b2ded563df16f6d5920671ffcfe5915d472"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b9dbfb1b5699f9f1e4991f96741bdf9047147589"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7ff76f8dc6b550f8d16487bf3cebc278be720b5c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/da02a1824884d6c84c5e5b5ac373b0c9e3288ec2"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-05T12:19:11Z"
  }
}