CVE-2026-45918 ovpn: tcp - don't deref NULL sk_socket member after tcp_close()

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/ovpn/tcp.c"
    ],
    "versions": [
      {
        "version": "11851cbd60ea1e5abbd97619d69845ead99303d6",
        "lessThan": "f998b2c4bec487063a586695159f9a1856e81c56",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "11851cbd60ea1e5abbd97619d69845ead99303d6",
        "lessThan": "b9142cf4e066c825ec68752a7dcaceda700bbe26",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "11851cbd60ea1e5abbd97619d69845ead99303d6",
        "lessThan": "94560267d6c41b1ff3fafbab726e3f8a55a6af34",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/ovpn/tcp.c"
    ],
    "versions": [
      {
        "version": "6.16",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.16",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.14",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.19.4",
        "lessThanOrEqual": "6.19.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]