{
  "cveId": "CVE-2026-68083",
  "url": "https://patchblox.com/security/cve/CVE-2026-68083",
  "summary": "CVE-2026-68083 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-68083, released August 11, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "ksmbd: fix path resolution in ksmbd_vfs_kern_path_create",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  ksmbd: fix path resolution in ksmbd_vfs_kern_path_create  The SMB2 open lookup is rooted at the share with LOOKUP_BENEATH, but the create/mkdir/hardlink sink is not: ksmbd_vfs_kern_path_create() builds an absolute path with convert_to_unix_name() and resolves it from AT_FDCWD via start_creating_path(), so a \u0022..\u0022 component is walked from the real filesystem root and escapes the export.  An authenticated client races a missing path component so the rooted open lookup returns -ENOENT (taking the create branch) while the same component is present (a directory) when the create walk runs; the create then resolves \u0022..\u0022 out of the share.  Root the create walk at the share like the lookup and rename paths already are: resolve the parent with vfs_path_parent_lookup(..., LOOKUP_BENEATH, \u0026share_conf-\u003Evfs_path) and create the final component with start_creating_noperm(). convert_to_unix_name() then has no callers and is removed.",
  "published": "2026-08-10T12:17:20Z",
  "severity": "Moderate",
  "cvss": 9.1,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H",
  "epss": 0.00479,
  "epssPercentile": 0.41577,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-68083",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.100-1",
      "fix": "DEBIAN-CVE-2026-68083",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-68083",
      "released": "2026-08-11T16:03:09Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.1.5-1",
      "fix": "DEBIAN-CVE-2026-68083",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-68083",
      "released": "2026-08-11T16:03:09Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}