{
  "cveId": "CVE-2026-99106",
  "url": "https://patchblox.com/security/cve/CVE-2026-99106",
  "summary": "CVE-2026-99106 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-99106, released November 3, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "drm/amdgpu: free the userptr ranges when a CS fails after parser_bos",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  drm/amdgpu: free the userptr ranges when a CS fails after parser_bos  amdgpu_cs_parser_bos() allocates an HMM range for every userptr entry of the BO list and looks up the user pages. Those ranges are only freed when amdgpu_cs_parser_bos() itself fails or when amdgpu_cs_submit() checks them under the notifier lock. If amdgpu_cs_patch_jobs(), amdgpu_cs_vm_handling(), amdgpu_cs_sync_rings() or the early part of amdgpu_cs_submit() fails, nothing frees them: neither amdgpu_cs_parser_fini() nor amdgpu_bo_list_free() touch e-\u003Erange.  Each such CS then leaks the range, its hmm_pfns array (8 bytes per page of the userptr BO) and the BO reference the range holds. An IB on a ring that patches the CS in place (e.g. VCN) with an unmapped va_start fails in amdgpu_cs_patch_ibs() and takes this path.  Free the ranges on those error paths. Ranges amdgpu_cs_submit() already dropped are NULL, so freeing them again is a no-op.  (cherry picked from commit c52a9542ed7cfd527feb938bd0accada2ac8d267)",
  "published": "2026-10-28T11:17:29Z",
  "severity": "Low",
  "cvss": 3.3,
  "epss": 0.00176,
  "epssPercentile": 0.07143,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-99106",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.115-2",
      "fix": "DEBIAN-CVE-2026-99106",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-99106",
      "released": "2026-11-03T18:58:21Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.13-1",
      "fix": "DEBIAN-CVE-2026-99106",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-99106",
      "released": "2026-11-03T18:58:21Z"
    }
  ],
  "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"
  }
}