{
  "cveId": "CVE-2026-45952",
  "url": "https://patchblox.com/security/cve/CVE-2026-45952",
  "summary": "CVE-2026-45952 is fixed in linux on 1 platform by DEBIAN-CVE-2026-45952 (version 6.18.14-1), released May 27, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  eth: fbnic: Add validation for MTU changes  Incr...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  eth: fbnic: Add validation for MTU changes  Increasing the MTU beyond the HDS threshold causes the hardware to fragment packets across multiple buffers. If a single-buffer XDP program is attached, the driver will drop all multi-frag frames. While we can\u0027t prevent a remote sender from sending non-TCP packets larger than the MTU, this will prevent users from inadvertently breaking new TCP streams.  Traditionally, drivers supported XDP with MTU less than 4Kb (packet per page). Fbnic currently prevents attaching XDP when MTU is too high. But it does not prevent increasing MTU after XDP is attached.",
  "published": "2026-05-27T14:17:11Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00126,
  "epssPercentile": 0.02323,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.18.14-1",
      "fix": "DEBIAN-CVE-2026-45952",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-45952",
      "released": "2026-05-27T17:38:13Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}