{
  "cveId": "CVE-2026-98177",
  "url": "https://patchblox.com/security/cve/CVE-2026-98177",
  "summary": "CVE-2026-98177 is fixed in linux on 1 platform by DEBIAN-CVE-2026-98177 (version 7.2.8-1), released October 6, 2026. It is not reported as exploited. Patch Radar priority: Urgent.",
  "title": "drm/amdkfd: Avoid integer underflow in EOP ring size calculation.",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  drm/amdkfd: Avoid integer underflow in EOP ring size calculation.  The low 6 bits of cp_hqd_eop_control store the base-2 logarithm of the EOP ring size. This was calculated as  order_base_2(q-\u003Eeop_ring_buffer_size / 4) - 1  But order_base_2 can in theory return 0, so this could underflow (although in practice the ring buffer size cannot be less than 4096).  Change this to  order_base_2(q-\u003Eeop_ring_buffer_size / 8)  using properties of logarithms.  Also add to the above comment to make the mathematics more clear.  (cherry picked from commit f0f43fcf8b2b3a924cad9444340921c96ed5f634)",
  "published": "2026-10-06T09:17:59Z",
  "severity": "Critical",
  "cvss": 9.8,
  "epss": 0.00166,
  "epssPercentile": 0.05858,
  "priority": "Urgent",
  "priorityTier": 2,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-98177",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.8-1",
      "fix": "DEBIAN-CVE-2026-98177",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-98177",
      "released": "2026-10-06T21:56:27Z"
    }
  ],
  "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"
  }
}