{"id":"CVE-2023-3865","summary":"ksmbd: fix out-of-bound read in smb2_write","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix out-of-bound read in smb2_write\n\nksmbd_smb2_check_message doesn't validate hdr-\u003eNextCommand. If\n-\u003eNextCommand is bigger than Offset + Length of smb2 write, It will\nallow oversized smb2 write length. It will cause OOB read in smb2_write.","modified":"2026-04-11T12:45:58.874675Z","published":"2025-08-16T13:27:56.403Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/3xxx/CVE-2023-3865.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/3813eee5154d6a4c5875cb4444cb2b63bac8947f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/58a9c41064df27632e780c5a3ae3e0e4284957d1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5fe7f7b78290638806211046a99f031ff26164e1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c86211159bc3178b891e0d60e586a32c7b6a231b"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/3xxx/CVE-2023-3865.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-3865"},{"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":"0626e6641f6b467447c81dd7678a69c66f7746cf"},{"fixed":"3813eee5154d6a4c5875cb4444cb2b63bac8947f"},{"fixed":"c86211159bc3178b891e0d60e586a32c7b6a231b"},{"fixed":"58a9c41064df27632e780c5a3ae3e0e4284957d1"},{"fixed":"5fe7f7b78290638806211046a99f031ff26164e1"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-3865.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.15.0"},{"fixed":"5.15.121"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.36"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.3.10"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-3865.json"}}],"schema_version":"1.7.5"}