{
  "cveId": "CVE-2026-98176",
  "url": "https://patchblox.com/security/cve/CVE-2026-98176",
  "summary": "CVE-2026-98176 is fixed in linux on 1 platform by DEBIAN-CVE-2026-98176 (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 with ffs in EOP ring size calc",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  drm/amdkfd: Avoid integer underflow with ffs in EOP ring size calc  The low 6 bits of cp_hqd_eop_control store the base-2 logarithm of the EOP ring size. This was calculated as  ffs(q-\u003Eeop_ring_buffer_size / sizeof(unsigned int)) - 1 - 1  But ffs can in theory return 1 or 0, so this could underflow (although in practice the ring buffer size cannot be less than 4096).  Change this to  ffs(q-\u003Eeop_ring_buffer_size / sizeof(unsigned int) / 4)  using properties of logarithms.  (cherry picked from commit 4f18c56630383c14bfc6b2d65f88f2f895d2121a)",
  "published": "2026-10-06T09:17:59Z",
  "severity": "Critical",
  "cvss": 9.8,
  "epss": 0.00166,
  "epssPercentile": 0.05862,
  "priority": "Urgent",
  "priorityTier": 2,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-98176",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.8-1",
      "fix": "DEBIAN-CVE-2026-98176",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-98176",
      "released": "2026-10-06T21:56:27Z"
    }
  ],
  "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"
  }
}