Description

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.

Classification

CVE ID: CVE-2023-52442

Affected Products

Vendor: Linux

Product: Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.06% (probability of being exploited)

EPSS Percentile: 28.94% (scored less or equal to compared to others)

EPSS Date: 2025-02-03 (when was this score calculated)

References

https://git.kernel.org/stable/c/017d85c94f02090a87f4a473dbe0d6ee0da72693
https://git.kernel.org/stable/c/becb5191d1d5fdfca0198a2e37457bbbf4fe266f
https://git.kernel.org/stable/c/4c2b350b2e269e3fd17bbfa42de1b42775b777ac
https://git.kernel.org/stable/c/3df0411e132ee74a87aa13142dfd2b190275332e

Timeline