Re: [PATCH 2/6] ksmbd: fix wrong UserName check in session_user

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2023-05-06 12:10 GMT+09:00, Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>:
> On (23/05/06 00:11), Namjae Jeon wrote:
>> The offset of UserName is related to the address of security
>> buffer. To ensure the validaty of UserName, we need to compare name_off
>> + name_len with secbuf_len instead of auth_msg_len.
>>
>> [   27.096243]
>> ==================================================================
>> [   27.096890] BUG: KASAN: slab-out-of-bounds in
>> smb_strndup_from_utf16+0x188/0x350
>> [   27.097609] Read of size 2 at addr ffff888005e3b542 by task
>> kworker/0:0/7
>> ...
>> [   27.099950] Call Trace:
>> [   27.100194]  <TASK>
>> [   27.100397]  dump_stack_lvl+0x33/0x50
>> [   27.100752]  print_report+0xcc/0x620
>> [   27.102305]  kasan_report+0xae/0xe0
>> [   27.103072]  kasan_check_range+0x35/0x1b0
>> [   27.103757]  smb_strndup_from_utf16+0x188/0x350
>> [   27.105474]  smb2_sess_setup+0xaf8/0x19c0
>> [   27.107935]  handle_ksmbd_work+0x274/0x810
>> [   27.108315]  process_one_work+0x419/0x760
>> [   27.108689]  worker_thread+0x2a2/0x6f0
>> [   27.109385]  kthread+0x160/0x190
>> [   27.110129]  ret_from_fork+0x1f/0x30
>> [   27.110454]  </TASK>
>>
>> Signed-off-by: Pumpkin <cc85nod@xxxxxxxxx>
>
> Do we still have a requirement that there should be a real name in SoB?
Hi 張智諺,

I will update SoB if you tell me your english real name.

Thanks.
>




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