{
  "cveId": "CVE-2021-46952",
  "url": "https://patchblox.com/security/cve/CVE-2021-46952",
  "summary": "CVE-2021-46952 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-46952, released February 27, 2024. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  NFS: fs_context: validate UDP retrans to prevent...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  NFS: fs_context: validate UDP retrans to prevent shift out-of-bounds  Fix shift out-of-bounds in xprt_calc_majortimeo(). This is caused by a garbage timeout (retrans) mount option being passed to nfs mount, in this case from syzkaller.  If the protocol is XPRT_TRANSPORT_UDP, then \u0027retrans\u0027 is a shift value for a 64-bit long integer, so \u0027retrans\u0027 cannot be \u003E= 64. If it is \u003E= 64, fail the mount and return an error.",
  "published": "2024-02-27T19:04:06Z",
  "severity": "high",
  "cvss": 7.1,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
  "epss": 0.00281,
  "epssPercentile": 0.20746,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.10.38-1",
      "fix": "DEBIAN-CVE-2021-46952",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-46952",
      "released": "2024-02-27T19:04:06Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.10.38-1",
      "fix": "DEBIAN-CVE-2021-46952",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-46952",
      "released": "2024-02-27T19:04:06Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.10.38-1",
      "fix": "DEBIAN-CVE-2021-46952",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-46952",
      "released": "2024-02-27T19:04:06Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}