{"id":"CVE-2026-90166","summary":"smb/server: fix null-ptr-deref in ksmbd_ipc_tree_connect_request()","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","modified":"2026-09-19T03:47:25.081045371Z","published":"2026-09-17T16:06:55.863Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90166.json"},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9"},{"fixed":"4eb74a34ea401abfbbd5991076715dae3de938df"},{"fixed":"8461f27902727ad434375caf13a0100aafc0340f"},{"fixed":"7065d3648b1a48d2c49da3d6364dd3c4d503b10c"},{"fixed":"d2ccf905f47d2344270749f4dfa905afcd3edeb0"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90166.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","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"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90166.json"}}],"schema_version":"1.9.0"}