net: mctp: take ownership of skb in mctp_local_output

{
  "id": "64a09ba1099f29010e37c7e809a3e6f2628548a09c1b6c0d5cdacc877be449e6",
  "url": "https://osv.dev/vulnerability/CVE-2024-27418",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "net: mctp: take ownership of skb in mctp_local_output",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: net: mctp: take ownership of skb in mctp_local_output Currently, mctp_local_output only takes ownership of skb on success, and we may leak an skb if mctp_local_output fails in specific states; the skb ownership isn't transferred until the actual output routing occurs. Instead, make mctp_local_output free the skb on all error paths up to the route action, so it always consumes the passed skb.",
    "evidence": "osv:CVE-2024-27418",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.81",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.21",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.7.9",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2024-27418",
      "aliases": [
        "CVE-2024-27418"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "833ef3b91de692ef33b800bca6b1569c39dece74"
                },
                {
                  "fixed": "a3c8fa54e904b0ddb52a08cc2d8ac239054f61fd"
                },
                {
                  "fixed": "cbebc55ceacef1fc0651e80e0103cc184552fc68"
                },
                {
                  "fixed": "a639441c880ac479495e5ab37e3c29f21ae5771b"
                },
                {
                  "fixed": "3773d65ae5154ed7df404b050fd7387a36ab5ef3"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-27418.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.15.0"
                },
                {
                  "fixed": "6.1.81"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.21"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.7.9"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-27418.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:41.553823176Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/3773d65ae5154ed7df404b050fd7387a36ab5ef3",
        "https://git.kernel.org/stable/c/a3c8fa54e904b0ddb52a08cc2d8ac239054f61fd",
        "https://git.kernel.org/stable/c/a639441c880ac479495e5ab37e3c29f21ae5771b",
        "https://git.kernel.org/stable/c/cbebc55ceacef1fc0651e80e0103cc184552fc68",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/27xxx/CVE-2024-27418.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-27418",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/27xxx/CVE-2024-27418.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-27418",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 508858,
  "published_at": "2024-05-17T11:51:11.27+00:00"
}