{
  "cveId": "CVE-2025-27466",
  "url": "https://patchblox.com/security/cve/CVE-2025-27466",
  "summary": "CVE-2025-27466 is fixed in xen on 1 platform, first by SUSE-SU-2025:03172-1, released September 11, 2025. It is not reported as exploited. Patch Radar priority: Urgent.",
  "title": "xen: This update for xen fixes the following issues:\n\nSecurity issues fixed:    \n    \n- CVE-2025-27466: NULL pointer deref...",
  "description": "This update for xen fixes the following issues:\n\nSecurity issues fixed:    \n    \n- CVE-2025-27466: NULL pointer dereference in the Viridian interface when updating the reference TSC area (bsc#1248807).\n- CVE-2025-58142: NULL pointer dereference in the Viridian interface due to assumption that the SIM page is mapped when\n  a synthetic timer message has to be delivered (bsc#1248807).\n- CVE-2025-58143: information leak and reference counter underflow in the Viridian interface due to race in the mapping\n  of the reference TSC page (bsc#1248807).\n\nOther issues fixed:\n    \n- efi: Call FreePages() only if needed (bsc#1027519).\n- x86/hpet: do local APIC EOI after interrupt processing (bsc#1027519).\n- x86/hvm/ioreq: Fix condition in hvm_alloc_legacy_ioreq_gfn() (bsc#1027519).\n- x86/idle: Fix the C6 eoi_errata[] list to include NEHALEM_EX (bsc#1027519).\n- x86/iommu: setup MMCFG ahead of IOMMU (bsc#1027519).\n- x86/mce: Adjustments to intel_init_ppin() (bsc#1027519).\n- x86/mkelf32: pad load segment to 2Mb boundary (bsc#1027519).",
  "published": "2025-09-11T12:54:02Z",
  "severity": "critical",
  "cvss": 9.8,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00488,
  "epssPercentile": 0.42253,
  "priority": "Urgent",
  "priorityTier": 2,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "xen",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "4.17.5\u002B72-g01140da4e8-1",
      "fix": "DEBIAN-CVE-2025-27466",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-27466",
      "released": "2025-09-11T14:15:41Z"
    },
    {
      "platform": "linux",
      "product": "xen",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "4.20.2\u002B7-g1badcf5035-0\u002Bdeb13u1",
      "fix": "DEBIAN-CVE-2025-27466",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-27466",
      "released": "2025-09-11T14:15:41Z"
    },
    {
      "platform": "linux",
      "product": "xen",
      "release": "Debian 14",
      "fixedVersion": "4.20.2\u002B7-g1badcf5035-1",
      "fix": "DEBIAN-CVE-2025-27466",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-27466",
      "released": "2025-09-11T14:15:41Z"
    },
    {
      "platform": "linux",
      "product": "xen",
      "release": "opensuse-leap 15.6",
      "fixedVersion": "4.18.5_08-150600.3.34.2",
      "fix": "SUSE-SU-2026:0012-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-0012-1",
      "released": "2026-01-05T10:31:27Z"
    },
    {
      "platform": "linux",
      "product": "xen",
      "release": "sles 15.6",
      "fixedVersion": "4.18.5_08-150600.3.34.2",
      "fix": "SUSE-SU-2026:0012-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-0012-1",
      "released": "2026-01-05T10:31:27Z"
    },
    {
      "platform": "linux",
      "product": "xen",
      "release": "sles 15.7",
      "fixedVersion": "4.20.1_04-150700.3.11.1",
      "fix": "SUSE-SU-2025:03172-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2025-03172-1",
      "released": "2025-09-11T12:54:02Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}