{
  "cveId": "CVE-2026-98449",
  "url": "https://patchblox.com/security/cve/CVE-2026-98449",
  "summary": "CVE-2026-98449 is fixed in linux on 1 platform by DEBIAN-CVE-2026-98449 (version 7.2.9-1), released October 19, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "smb: client: delete compound mids on send failure before unlock",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  smb: client: delete compound mids on send failure before unlock  When sending a compound request fails, smb_send_rqst() kicks off a reconnect. compound_send_recv() still has those mids on pending_mid_q, but it unlocks the server without removing them first.  During reconnect, cifs_abort_connection() walks pending_mid_q and runs each mid callback. With no response yet, those callbacks return credits and drop in_flight. Then compound_send_recv()\u0027s send-error path returns the same credits again. in_flight ends up decremented twice and smb2_add_credits() WARNs.  syzbot hits this during SMB2_negotiate when the socket send fails.  cifs_call_async() already calls delete_mid() before unlock on send failure. Do the same for compound chains and set cancelled_mid[] so the out: path does not delete them again.",
  "published": "2026-10-18T16:16:55Z",
  "severity": "Moderate",
  "cvss": 4.2,
  "epss": 0.00173,
  "epssPercentile": 0.06816,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-98449",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.9-1",
      "fix": "DEBIAN-CVE-2026-98449",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-98449",
      "released": "2026-10-19T16:27:52Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}