{
  "cveId": "CVE-2026-6426",
  "url": "https://patchblox.com/security/cve/CVE-2026-6426",
  "summary": "CVE-2026-6426 is fixed in qemu on 1 platform by DEBIAN-CVE-2026-6426 (version 1:11.1.2\u002Bds-2), released August 10, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "qemu: A type mismatch vulnerability was found in QEMU\u0027s vhost inflight migration VMState handling",
  "description": "A type mismatch vulnerability was found in QEMU\u0027s vhost inflight migration VMState handling. The destination buffer size is stored as a uint64_t but read by the VMS_VBUFFER load path as a signed int32_t. On little-endian hosts, a crafted incoming migration state with bit 31 set causes the value to be interpreted as negative and then implicitly converted to a very large size_t, leading qemu_get_buffer() to copy migration-stream data beyond the bounds of the mmap-backed inflight region.  This can result in a crash of the QEMU process or memory corruption. Exploitation requires control of the migration producer or write access to the migration channel, combined with a destination configured to use vhost inflight migration.",
  "published": "2026-08-10T22:17:10Z",
  "severity": "medium",
  "cvss": 4.4,
  "cvssVector": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00394,
  "epssPercentile": 0.33878,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "qemu",
      "release": "Debian 14",
      "fixedVersion": "1:11.1.2\u002Bds-2",
      "fix": "DEBIAN-CVE-2026-6426",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-6426",
      "released": "2026-08-10T22:17:10Z"
    }
  ],
  "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"
  }
}