{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "f0281c1d3732d1ec084fa1e06d1767d33e1a570e"
            },
            {
              "fixed": "21dbc9f4d0bdd3b22f91beabc7840064bf11594f"
            },
            {
              "fixed": "e283009151d3d131447c2edda500199c5fda5f72"
            },
            {
              "fixed": "aea934a221ec6a867221e5b765f65f1857befd53"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.16.0"
            },
            {
              "fixed": "6.18.55"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98604.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\novpn: replace bind when learning local endpoint\n\nstruct ovpn_bind is published through peer-\u003ebind with RCU, but local\nendpoint learning updates bind-\u003elocal in place under peer-\u003elock. UDP TX\nreads the field without that lock. In particular, a concurrent IPv6\nupdate can therefore result in a torn address read.\n\nUse ovpn_peer_reset_sockaddr to publish a replacement bind when learning\na new local endpoint, just as a remote endpoint change does. Preserve\nthe current remote address and reset the dst cache only after the new\nbind has been published successfully.\n\nTrack remote endpoint changes separately so that float notification and\ntransport-address rehashing remain limited to actual peer floats.",
  "id": "CVE-2026-98604",
  "modified": "2026-10-20T02:30:29.135873085Z",
  "published": "2026-10-18T15:19:17.227Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/21dbc9f4d0bdd3b22f91beabc7840064bf11594f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/aea934a221ec6a867221e5b765f65f1857befd53"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e283009151d3d131447c2edda500199c5fda5f72"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98604.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98604"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "ovpn: replace bind when learning local endpoint"
}