{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9"
            },
            {
              "fixed": "4eb74a34ea401abfbbd5991076715dae3de938df"
            },
            {
              "fixed": "8461f27902727ad434375caf13a0100aafc0340f"
            },
            {
              "fixed": "7065d3648b1a48d2c49da3d6364dd3c4d503b10c"
            },
            {
              "fixed": "d2ccf905f47d2344270749f4dfa905afcd3edeb0"
            }
          ],
          "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": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.52"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90166.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb/server: fix null-ptr-deref in ksmbd_ipc_tree_connect_request()\n\nSee the procedure below:\n\n  ksmbd_tree_conn_connect\n    ksmbd_share_config_get\n      share-\u003ename = kstrdup() // fail\n      if (!test_share_config_flag(share, KSMBD_SHARE_FLAG_PIPE)) // false\n      // do not check `share-\u003ename`\n    ksmbd_ipc_tree_connect_request\n      strlen(share-\u003ename) // null-ptr-deref",
  "id": "CVE-2026-90166",
  "modified": "2026-09-19T03:30:57.571722738Z",
  "published": "2026-09-17T16:06:55.863Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4eb74a34ea401abfbbd5991076715dae3de938df"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7065d3648b1a48d2c49da3d6364dd3c4d503b10c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8461f27902727ad434375caf13a0100aafc0340f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d2ccf905f47d2344270749f4dfa905afcd3edeb0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90166.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90166"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "smb/server: fix null-ptr-deref in ksmbd_ipc_tree_connect_request()"
}