{
  "cveId": "CVE-2026-62437",
  "url": "https://patchblox.com/security/cve/CVE-2026-62437",
  "summary": "CVE-2026-62437 is fixed in 15 products on 1 platform, first by SUSE-SU-2026:4090-1, released September 8, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "xen: When guests are terminated, various pieces of cleanup need carrying out",
  "description": "When guests are terminated, various pieces of cleanup need carrying out. The cleaning up of PCI devices which were assigned to guests, and the associated removal of tracking structures for IRQs used by the devices occurs relatively early in the process.  Unfortunately after that point the guest about to be terminated could cause its device model (DM) to re-establish such tracking structures, by having it bind one or more IRQs anew.  While some of those tracking structures would still be cleaned up later on, at least one would not be.",
  "published": "2026-09-08T12:26:56Z",
  "severity": "medium",
  "cvss": 6.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
  "epss": 0.00095,
  "epssPercentile": 0.00616,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "xen",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "4.17.7\u002B13-g2445b30a44-0\u002Bdeb12u1",
      "fix": "DEBIAN-CVE-2026-62437",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-62437",
      "released": "2026-09-08T13:17:19Z"
    },
    {
      "platform": "linux",
      "product": "xen",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "4.20.4\u002B39-gf1e1321c87-0\u002Bdeb13u1",
      "fix": "DEBIAN-CVE-2026-62437",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-62437",
      "released": "2026-09-08T13:17:19Z"
    },
    {
      "platform": "linux",
      "product": "xen",
      "release": "Debian 14",
      "fixedVersion": "4.20.4\u002B39-gf1e1321c87-1",
      "fix": "DEBIAN-CVE-2026-62437",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-62437",
      "released": "2026-09-08T13:17:19Z"
    },
    {
      "platform": "linux",
      "product": "xen",
      "release": "Fedora 43",
      "fixedVersion": "4.20.4-2.fc43",
      "fix": "FEDORA-2026-A9EA805BC1",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-a9ea805bc1",
      "released": "2026-09-17T20:19:07Z"
    },
    {
      "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"
    },
    {
      "platform": "linux",
      "product": "xen-debuginfo",
      "release": "Fedora 43",
      "fixedVersion": "4.20.4-2.fc43",
      "fix": "FEDORA-2026-A9EA805BC1",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-a9ea805bc1",
      "released": "2026-09-17T20:19:07Z"
    },
    {
      "platform": "linux",
      "product": "xen-debugsource",
      "release": "Fedora 43",
      "fixedVersion": "4.20.4-2.fc43",
      "fix": "FEDORA-2026-A9EA805BC1",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-a9ea805bc1",
      "released": "2026-09-17T20:19:07Z"
    },
    {
      "platform": "linux",
      "product": "xen-devel",
      "release": "Fedora 43",
      "fixedVersion": "4.20.4-2.fc43",
      "fix": "FEDORA-2026-A9EA805BC1",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-a9ea805bc1",
      "released": "2026-09-17T20:19:07Z"
    },
    {
      "platform": "linux",
      "product": "xen-doc",
      "release": "Fedora 43",
      "fixedVersion": "4.20.4-2.fc43",
      "fix": "FEDORA-2026-A9EA805BC1",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-a9ea805bc1",
      "released": "2026-09-17T20:19:07Z"
    },
    {
      "platform": "linux",
      "product": "xen-hypervisor",
      "release": "Fedora 43",
      "fixedVersion": "4.20.4-2.fc43",
      "fix": "FEDORA-2026-A9EA805BC1",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-a9ea805bc1",
      "released": "2026-09-17T20:19:07Z"
    },
    {
      "platform": "linux",
      "product": "xen-libs",
      "release": "Fedora 43",
      "fixedVersion": "4.20.4-2.fc43",
      "fix": "FEDORA-2026-A9EA805BC1",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-a9ea805bc1",
      "released": "2026-09-17T20:19:07Z"
    },
    {
      "platform": "linux",
      "product": "xen-libs-debuginfo",
      "release": "Fedora 43",
      "fixedVersion": "4.20.4-2.fc43",
      "fix": "FEDORA-2026-A9EA805BC1",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-a9ea805bc1",
      "released": "2026-09-17T20:19:07Z"
    },
    {
      "platform": "linux",
      "product": "xen-licenses",
      "release": "Fedora 43",
      "fixedVersion": "4.20.4-2.fc43",
      "fix": "FEDORA-2026-A9EA805BC1",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-a9ea805bc1",
      "released": "2026-09-17T20:19:07Z"
    },
    {
      "platform": "linux",
      "product": "xen-ocaml",
      "release": "Fedora 43",
      "fixedVersion": "4.20.4-2.fc43",
      "fix": "FEDORA-2026-A9EA805BC1",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-a9ea805bc1",
      "released": "2026-09-17T20:19:07Z"
    },
    {
      "platform": "linux",
      "product": "xen-ocaml-debuginfo",
      "release": "Fedora 43",
      "fixedVersion": "4.20.4-2.fc43",
      "fix": "FEDORA-2026-A9EA805BC1",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-a9ea805bc1",
      "released": "2026-09-17T20:19:07Z"
    },
    {
      "platform": "linux",
      "product": "xen-ocaml-devel",
      "release": "Fedora 43",
      "fixedVersion": "4.20.4-2.fc43",
      "fix": "FEDORA-2026-A9EA805BC1",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-a9ea805bc1",
      "released": "2026-09-17T20:19:07Z"
    },
    {
      "platform": "linux",
      "product": "xen-ocaml-devel-debuginfo",
      "release": "Fedora 43",
      "fixedVersion": "4.20.4-2.fc43",
      "fix": "FEDORA-2026-A9EA805BC1",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-a9ea805bc1",
      "released": "2026-09-17T20:19:07Z"
    },
    {
      "platform": "linux",
      "product": "xen-runtime",
      "release": "Fedora 43",
      "fixedVersion": "4.20.4-2.fc43",
      "fix": "FEDORA-2026-A9EA805BC1",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-a9ea805bc1",
      "released": "2026-09-17T20:19:07Z"
    },
    {
      "platform": "linux",
      "product": "xen-runtime-debuginfo",
      "release": "Fedora 43",
      "fixedVersion": "4.20.4-2.fc43",
      "fix": "FEDORA-2026-A9EA805BC1",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-a9ea805bc1",
      "released": "2026-09-17T20:19:07Z"
    }
  ],
  "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"
  }
}