{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "265fd1991c1db85fbabaad4946ca0e63e2ae688d"
            },
            {
              "fixed": "489d1ded01425c0fb33418172c0e4e588467526b"
            },
            {
              "fixed": "c7c884a1305aa4540eb7942a50bd356b34120e1f"
            },
            {
              "fixed": "98185b3025beeae92d1fe700d5db26b9ac4bf025"
            },
            {
              "fixed": "1c8951963d8ed357f70f59e0ad4ddce2199d2016"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.15.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68083.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix path resolution in ksmbd_vfs_kern_path_create\n\nThe SMB2 open lookup is rooted at the share with LOOKUP_BENEATH, but the\ncreate/mkdir/hardlink sink is not: ksmbd_vfs_kern_path_create() builds an\nabsolute path with convert_to_unix_name() and resolves it from AT_FDCWD\nvia start_creating_path(), so a \"..\" component is walked from the real\nfilesystem root and escapes the export.\n\nAn authenticated client races a missing path component so the rooted open\nlookup returns -ENOENT (taking the create branch) while the same component\nis present (a directory) when the create walk runs; the create then\nresolves \"..\" out of the share.\n\nRoot the create walk at the share like the lookup and rename paths already\nare: resolve the parent with vfs_path_parent_lookup(..., LOOKUP_BENEATH,\n\u0026share_conf-\u003evfs_path) and create the final component with\nstart_creating_noperm(). convert_to_unix_name() then has no callers and is\nremoved.",
  "id": "CVE-2026-68083",
  "modified": "2026-08-12T03:51:32.625265234Z",
  "published": "2026-08-10T11:41:47.153Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1c8951963d8ed357f70f59e0ad4ddce2199d2016"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/489d1ded01425c0fb33418172c0e4e588467526b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/98185b3025beeae92d1fe700d5db26b9ac4bf025"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c7c884a1305aa4540eb7942a50bd356b34120e1f"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68083.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68083"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "ksmbd: fix path resolution in ksmbd_vfs_kern_path_create"
}