devlink: fix net namespace reference leak in reload

{
  "id": "b2d1f1b4c5a92028150696f63c9941113ae924f7684d21ca2de4818f0369de75",
  "url": "https://osv.dev/vulnerability/CVE-2026-74718",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "devlink: fix net namespace reference leak in reload",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: devlink: fix net namespace reference leak in reload devlink_nl_reload_doit() calls devlink_netns_get(), which returns a net with a held reference. When the requested namespace differs from the current one and the reload action is not DRIVER_REINIT, the function returns -EOPNOTSUPP without releasing the reference. Add the missing put_net() on this error path.",
    "evidence": "osv:CVE-2026-74718",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.6.152",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.104",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.45",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.1.9",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-74718",
      "aliases": [
        "CVE-2026-74718"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "2edd92570441dd33246210042dc167319a5cf7e3"
                },
                {
                  "fixed": "7b6552e53426ea0539c667bbc5a524fdf7feae6f"
                },
                {
                  "fixed": "bf0797b92be591ac71d7c0f610e695caca3c72c9"
                },
                {
                  "fixed": "7b02c6d2a3cd2cd669f5c16685779f84328ae60c"
                },
                {
                  "fixed": "eda60c85b4f4c7d66b7141a5fe020b1a7f395341"
                },
                {
                  "fixed": "1c4dac9bf1d2ac31da63b794bdec697777cbd0fd"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74718.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.3.0"
                },
                {
                  "fixed": "6.6.152"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.104"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.18.45"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "7.1.9"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74718.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:51.484245002Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/1c4dac9bf1d2ac31da63b794bdec697777cbd0fd",
        "https://git.kernel.org/stable/c/7b02c6d2a3cd2cd669f5c16685779f84328ae60c",
        "https://git.kernel.org/stable/c/7b6552e53426ea0539c667bbc5a524fdf7feae6f",
        "https://git.kernel.org/stable/c/bf0797b92be591ac71d7c0f610e695caca3c72c9",
        "https://git.kernel.org/stable/c/eda60c85b4f4c7d66b7141a5fe020b1a7f395341",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74718.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-74718",
        "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/2026/74xxx/CVE-2026-74718.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-74718",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 520368,
  "published_at": "2026-08-22T15:33:12.106+00:00"
}