{
  "cveId": "CVE-2026-98713",
  "url": "https://patchblox.com/security/cve/CVE-2026-98713",
  "summary": "CVE-2026-98713 is fixed in 39 products on 1 platform, first by DEBIAN-CVE-2026-98713, released October 19, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "KVM: arm64: Apply the fine-grained UNDEFs without FEAT_FGT",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  KVM: arm64: Apply the fine-grained UNDEFs without FEAT_FGT  FGUs don\u0027t actually require hardware support, so don\u0027t gate fgt trap config insertion on FGT. This is the only action required to allow FGUs always, as kvm_calculate_traps() already computes the FGU bits with or without FEAT_FGT.  This also fixes a spurious WARN when a TLBI OS is run on a guest in vEL1 without FEAT_TLBIOS on non FEAT_FGT hardware. In this configuration the course-grained HCR_EL2.TTLBOS trap reaches the handler handle_tlbi_el1(), which expects an EL1 TLBI only from vEL2. With FGUs enabled the UNDEF will be injected without needing the specific handler.  [oliver: Take Wei-Lin\u0027s suggested changelog]",
  "published": "2026-10-18T16:17:24Z",
  "severity": "important",
  "epss": 0.00168,
  "epssPercentile": 0.06126,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-98713",
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  ],
  "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"
  }
}