tcp: fix TIME_WAIT socket reference leak on PSP policy failure

{
  "id": "839a31e22aacaaa4c2e743adfc4f105e5a58502d3274f3bd4c29ecbca264f4d1",
  "url": "https://osv.dev/vulnerability/CVE-2026-68379",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "tcp: fix TIME_WAIT socket reference leak on PSP policy failure",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: tcp: fix TIME_WAIT socket reference leak on PSP policy failure Release the TIME_WAIT socket reference and jump to discard_it upon PSP policy failure in both IPv4 and IPv6 receive paths. This prevents a memory leak of tcp_tw_bucket structures.",
    "evidence": "osv:CVE-2026-68379",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.18.42",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.1.6",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-68379",
      "aliases": [
        "CVE-2026-68379"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                {
                  "fixed": "e666af5dcc905ba694745963174d232deb478c55"
                },
                {
                  "fixed": "374742a961becbbfc7fbfd1382d978a05e492741"
                },
                {
                  "fixed": "2c1931a81122c3cdc4c89448fe0442c69e21c0d5"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68379.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.18.0"
                },
                {
                  "fixed": "6.18.42"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "7.1.6"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68379.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:30.754273405Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/2c1931a81122c3cdc4c89448fe0442c69e21c0d5",
        "https://git.kernel.org/stable/c/374742a961becbbfc7fbfd1382d978a05e492741",
        "https://git.kernel.org/stable/c/e666af5dcc905ba694745963174d232deb478c55",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68379.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-68379",
        "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/2026/68xxx/CVE-2026-68379.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-68379",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 497809,
  "published_at": "2026-08-10T12:03:57.537+00:00"
}