{
  "cveId": "CVE-2021-47248",
  "url": "https://patchblox.com/security/cve/CVE-2021-47248",
  "summary": "CVE-2021-47248 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-47248, released May 21, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  udp: fix race between close() and udp_abort()  K...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  udp: fix race between close() and udp_abort()  Kaustubh reported and diagnosed a panic in udp_lib_lookup(). The root cause is udp_abort() racing with close(). Both racing functions acquire the socket lock, but udp{v6}_destroy_sock() release it before performing destructive actions.  We can\u0027t easily extend the socket lock scope to avoid the race, instead use the SOCK_DEAD flag to prevent udp_abort from doing any action when the critical race happens.  Diagnosed-and-tested-by: Kaustubh Pandey \u003Ckapandey@codeaurora.org\u003E",
  "published": "2024-05-21T15:15:13Z",
  "severity": "medium",
  "cvss": 4.7,
  "cvssVector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.0019,
  "epssPercentile": 0.08719,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.10.46-1",
      "fix": "DEBIAN-CVE-2021-47248",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47248",
      "released": "2024-05-21T15:15:13Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.10.46-1",
      "fix": "DEBIAN-CVE-2021-47248",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47248",
      "released": "2024-05-21T15:15:13Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.10.46-1",
      "fix": "DEBIAN-CVE-2021-47248",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47248",
      "released": "2024-05-21T15:15:13Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}