{
  "cveId": "CVE-2026-31409",
  "url": "https://patchblox.com/security/cve/CVE-2026-31409",
  "summary": "CVE-2026-31409 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-31409, released April 6, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  ksmbd: unset conn-\u003Ebinding on failed binding req...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  ksmbd: unset conn-\u003Ebinding on failed binding request  When a multichannel SMB2_SESSION_SETUP request with SMB2_SESSION_REQ_FLAG_BINDING fails ksmbd sets conn-\u003Ebinding = true but never clears it on the error path. This leaves the connection in a binding state where all subsequent ksmbd_session_lookup_all() calls fall back to the global sessions table. This fix it by clearing conn-\u003Ebinding = false in the error path.",
  "published": "2026-04-06T08:16:38Z",
  "severity": "high",
  "cvss": 8.8,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00462,
  "epssPercentile": 0.40282,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.170-1",
      "fix": "DEBIAN-CVE-2026-31409",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-31409",
      "released": "2026-04-06T08:16:38Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.85-1",
      "fix": "DEBIAN-CVE-2026-31409",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-31409",
      "released": "2026-04-06T08:16:38Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.19.10-1",
      "fix": "DEBIAN-CVE-2026-31409",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-31409",
      "released": "2026-04-06T08:16:38Z"
    }
  ],
  "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"
  }
}