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Change History

In the Linux kernel, the following vulnerability has been resolved:

ksmbd: fix race condition between session lookup and expire

 Thread A                        +  Thread B
 ksmbd_session_lookup            |  smb2_sess_setup
   sess = xa_load                |
                                 |
                                 |    xa_erase(&conn->sessions, sess->id);
                                 |
                                 |    ksmbd_session_destroy(sess) --> kfree(sess)
           

Linux https://git.kernel.org/stable/c/18ced78b0ebccc2d16f426143dc56ab3aad666be [No types assigned]

Linux https://git.kernel.org/stable/c/53ff5cf89142b978b1a5ca8dc4d4425e6a09745f [No types assigned]

Linux https://git.kernel.org/stable/c/a2ca5fd3dbcc665e1169044fa0c9e3eba779202b [No types assigned]

Linux https://git.kernel.org/stable/c/c77fd3e25a51ac92b0f1b347a96eff6a0b4f066f [No types assigned]