{
  "cveId": "CVE-2026-42493",
  "url": "https://patchblox.com/security/cve/CVE-2026-42493",
  "summary": "CVE-2026-42493 is fixed in xen on 1 platform, first by SUSE-SU-2026:3409-1, released July 29, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "xen: Addressing certain issues, in particular related to operations which may take excessively long and therefore would ne...",
  "description": "Addressing certain issues, in particular related to operations which may take excessively long and therefore would need preemption, has turned out overly costly.  Since alternatives (HVM/PVH: HAP, PV: shim) are commonly available, the decision was to deprecate the functionality, while still retaining it for people to use at their own (security) risk.  Memory-wise small enough guests may still be okay to run.",
  "published": "2026-07-28T13:18:32Z",
  "severity": "high",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.0045,
  "epssPercentile": 0.39319,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "xen",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "4.17.7-0\u002Bdeb12u1",
      "fix": "DEBIAN-CVE-2026-42493",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-42493",
      "released": "2026-08-03T14:46:46Z"
    },
    {
      "platform": "linux",
      "product": "xen",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "4.20.3\u002B127-gc42374a105-0\u002Bdeb13u1",
      "fix": "DEBIAN-CVE-2026-42493",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-42493",
      "released": "2026-08-03T14:46:46Z"
    },
    {
      "platform": "linux",
      "product": "xen",
      "release": "Debian 14",
      "fixedVersion": "4.20.3\u002B127-gc42374a105-1",
      "fix": "DEBIAN-CVE-2026-42493",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-42493",
      "released": "2026-08-03T14:46:46Z"
    },
    {
      "platform": "linux",
      "product": "xen",
      "release": "sles 15.6",
      "fixedVersion": "4.18.5_20-150600.3.53.3",
      "fix": "SUSE-SU-2026:3409-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-3409-1",
      "released": "2026-07-29T11:18:18Z"
    },
    {
      "platform": "linux",
      "product": "xen",
      "release": "sles 15.7",
      "fixedVersion": "4.20.4_04-150700.3.46.1",
      "fix": "SUSE-SU-2026:4090-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4090-1",
      "released": "2026-09-08T12:26:56Z"
    }
  ],
  "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"
  }
}