{
  "cveId": "CVE-2026-80816",
  "url": "https://patchblox.com/security/cve/CVE-2026-80816",
  "summary": "CVE-2026-80816 is fixed in linux on 1 platform by DEBIAN-CVE-2026-80816 (version 7.1.12-1), released September 5, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  ALSA: FCP: Use a private URB for the notificatio...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  ALSA: FCP: Use a private URB for the notification endpoint  fcp_init_notify() used mixer-\u003Eurb, which snd_usb_mixer_status_create() allocates for the optional UAC2 status interrupt endpoint and mixer.c kills, resubmits and frees. On a device with that endpoint, fcp_init_notify()\u0027s \u0022already set up\u0022 early return fires on the status URB and returns success without doing anything. No FCP notification URB is submitted, and cmd_done is left zeroed because it is initialised past that early return and nowhere else. fcp_init() then issues init1_opcode and wait_for_completion_timeout() would crash adding to the zeroed wait.head. fcp_cleanup_urb() would also kill and free mixer.c\u0027s status URB.  Use a separate URB in fcp_data, and initialise cmd_done in fcp_init_private() where fcp_data is allocated. fcp_init_notify() is reached again after suspend via fcp_reinit(), and the URB kill path in fcp_notify() completes cmd_done, leaving a stale count that would satisfy the next command\u0027s wait before the device ACKs. Use reinit_completion() to clear it.",
  "published": "2026-09-04T16:18:09Z",
  "severity": "",
  "epss": 0.00209,
  "epssPercentile": 0.11085,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.1.12-1",
      "fix": "DEBIAN-CVE-2026-80816",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-80816",
      "released": "2026-09-05T01:57:10Z"
    }
  ],
  "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"
  }
}