Critical · published February 21, 2024
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.
| Product | Versions | Fixed in |
|---|---|---|
| linux/linux_kernel | ≥ 5.15, < 5.15.145 | 5.15.145 |
| linux/linux_kernel | ≥ 5.16, < 6.1.53 | 6.1.53 |
| linux/linux_kernel | ≥ 6.2, < 6.4.16 | 6.4.16 |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |