{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "00cfd77b9063dcdf3628a7087faba60de85a9cc8"
            },
            {
              "fixed": "9426265e157dd77ec237c795901ed4dea6d69b5c"
            },
            {
              "fixed": "b41dd76f3b9735096c21d3e799a2b9fe36498d57"
            },
            {
              "fixed": "acd3d3562315c99f3c0db16f0fcc5f0306638982"
            },
            {
              "fixed": "25e37407442b8766ec2cf52fb4e31b5c3d3aeeae"
            },
            {
              "fixed": "9634cb35af17019baec21ca648516ce376fa10e6"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.10.0"
            },
            {
              "fixed": "6.6.142"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.92"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.30"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46158.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: pm: ADD_ADDR rtx: always decrease sk refcount\n\nWhen an ADD_ADDR is retransmitted, the sk is held in sk_reset_timer().\nIt should then be released in all cases at the end.\n\nSome (unlikely) checks were returning directly instead of calling\nsock_put() to decrease the refcount. Jump to a new 'exit' label to call\n__sock_put() (which will become sock_put() in the next commit) to fix\nthis potential leak.\n\nWhile at it, drop the '!msk' check which cannot happen because it is\nnever reset, and explicitly mark the remaining one as \"unlikely\".",
  "id": "CVE-2026-46158",
  "modified": "2026-07-15T01:48:55.910096295Z",
  "published": "2026-05-28T09:36:13.821Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/25e37407442b8766ec2cf52fb4e31b5c3d3aeeae"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9426265e157dd77ec237c795901ed4dea6d69b5c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9634cb35af17019baec21ca648516ce376fa10e6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/acd3d3562315c99f3c0db16f0fcc5f0306638982"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b41dd76f3b9735096c21d3e799a2b9fe36498d57"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46158.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46158"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "mptcp: pm: ADD_ADDR rtx: always decrease sk refcount"
}