CVE-2023-52442: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 29.6% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate session id and tree id in compound request `smb2_get_msg()` in smb2_get_ksmbd_tcon() and smb2_check_user_session() will always return the first request smb2 header in a compound request. if `SMB2_TREE_CONNECT_HE` is the first command in compound request, will return 0, i.e. The tree id check is skipped. This patch use ksmbd_req_buf_next() to get current command in compound.

Affected products

• Linux Linux Kernel: from 5.15, before 5.15.145 (fixed in 5.15.145); from 5.16, before 6.1.53 (fixed in 6.1.53); from 6.2, before 6.4.16 (fixed in 6.4.16); version 6.5 only

Published 2024-02-21. Last modified 2026-08-04.