CVE-2025-37777 Information

Description

In the Linux kernel the following vulnerability has been resolved:

ksmbd: fix use-after-free in __smb2_lease_break_noti()

Move tcp_transport free to ksmbd_conn_free. If ksmbd connection is referenced when ksmbd server thread terminates It will not be freed but conn->tcp_transport is freed. __smb2_lease_break_noti can be performed asynchronously when the connection is disconnected. __smb2_lease_break_noti calls ksmbd_conn_write which can cause use-after-free when conn->ksmbd_transport is already freed.

Reference

https://git.kernel.org/stable/c/21a4e47578d44c6b37c4fc4aba8ed7cc8dbb13de https://git.kernel.org/stable/c/e59796fc80603bcd8569d4d2e10b213c1918edb4