{
  "cveId": "CVE-2026-93106",
  "url": "https://patchblox.com/security/cve/CVE-2026-93106",
  "summary": "CVE-2026-93106 is fixed in linux on 1 platform by DEBIAN-CVE-2026-93106 (version 7.2.6-1), released September 23, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "crash_dump: release keyring reference at the correct time",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  crash_dump: release keyring reference at the correct time  restore_dm_crypt_keys_to_thread_keyring() gets a reference to the user keyring before restoring the saved dm-crypt keys.  The same keyring reference is then passed to add_key_to_keyring() for each saved key, but add_key_to_keyring() drops that reference on every call. This is only balanced when exactly one key is restored. With multiple keys, the keyring reference is dropped too many times and may trigger a refcount underflow or use-after-free.  When more than five keys are restored, a refcount underflow/use-after-free warning can be triggered.  The early error paths after lookup_user_key() also return without dropping the keyring reference.  Keep ownership of the keyring reference in restore_dm_crypt_keys_to_thread_keyring(), drop it once on all exit paths, and make add_key_to_keyring() only use the reference without consuming it.",
  "published": "2026-09-17T17:18:04Z",
  "severity": "",
  "epss": 0.00206,
  "epssPercentile": 0.10796,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-93106",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.6-1",
      "fix": "DEBIAN-CVE-2026-93106",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-93106",
      "released": "2026-09-23T19:19:02Z"
    }
  ],
  "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"
  }
}