{
  "cveId": "CVE-2022-42324",
  "url": "https://patchblox.com/security/cve/CVE-2022-42324",
  "summary": "CVE-2022-42324 is fixed in xen on 1 platform, first by DEBIAN-CVE-2022-42324, released November 1, 2022. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "xen: Oxenstored 32-\u003E31 bit integer truncation issues Integers in Ocaml are 63 or 31 bits of signed precision",
  "description": "Oxenstored 32-\u003E31 bit integer truncation issues Integers in Ocaml are 63 or 31 bits of signed precision. The Ocaml Xenbus library takes a C uint32_t out of the ring and casts it directly to an Ocaml integer. In 64-bit Ocaml builds this is fine, but in 32-bit builds, it truncates off the most significant bit, and then creates unsigned/signed confusion in the remainder. This in turn can feed a negative value into logic not expecting a negative value, resulting in unexpected exceptions being thrown. The unexpected exception is not handled suitably, creating a busy-loop trying (and failing) to take the bad packet out of the xenstore ring.",
  "published": "2022-11-01T13:15:12Z",
  "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": 0.00297,
  "epssPercentile": 0.22532,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "xen",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "4.16.2\u002B90-g0d39a6d1ae-1",
      "fix": "DEBIAN-CVE-2022-42324",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-42324",
      "released": "2022-11-01T13:15:12Z"
    },
    {
      "platform": "linux",
      "product": "xen",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "4.16.2\u002B90-g0d39a6d1ae-1",
      "fix": "DEBIAN-CVE-2022-42324",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-42324",
      "released": "2022-11-01T13:15:12Z"
    },
    {
      "platform": "linux",
      "product": "xen",
      "release": "Debian 14",
      "fixedVersion": "4.16.2\u002B90-g0d39a6d1ae-1",
      "fix": "DEBIAN-CVE-2022-42324",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-42324",
      "released": "2022-11-01T13:15:12Z"
    }
  ],
  "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"
  }
}