{"id":"CVE-2026-23226","summary":"ksmbd: add chann_lock to protect ksmbd_chann_list xarray","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: add chann_lock to protect ksmbd_chann_list xarray\n\nksmbd_chann_list xarray lacks synchronization, allowing use-after-free in\nmulti-channel sessions (between lookup_chann_list() and ksmbd_chann_del).\n\nAdds rw_semaphore chann_lock to struct ksmbd_session and protects\nall xa_load/xa_store/xa_erase accesses.","modified":"2026-05-15T11:53:27.844435951Z","published":"2026-02-18T14:53:29.562Z","related":["CGA-8h28-vxgj-w94v","openSUSE-SU-2026:10387-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23226.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/36ef605c0395b94b826a8c8d6f2697071173de6e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4c2ca31608521895dd742a43beca4b4d29762345"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4f3a06cc57976cafa8c6f716646be6c79a99e485"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e4a8a96a93d08570e0405cfd989a8a07e5b6ff33"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23226.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23226"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.3.0"},{"fixed":"6.12.77"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.11"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.1"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23226.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}