lkml.org 
[lkml]   [2019]   [Mar]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [BUG] scsi: ses: out of bound accessing in ses_enclosure_data_process
From
Date
Would anyone please give some suggestions ?

It looks like there somethings wrong in the read-in data,

/* skip all the enclosure descriptors */
for (i = 0; i < num_enclosures && type_ptr < buf + len; i++) {
types += type_ptr[2];
type_ptr += type_ptr[3] + 4; ----> here
}
Then the typr_ptr got out of bound of the buffer.


Thanks
Jianchao

On 3/14/19 11:19 AM, jianchao.wang wrote:
> Dear all
>
> When our customer probe the lpfc devices, they encountered odd memory corruption issues,
> and we get 'out of bound' access warning at following position after open KASAN
>
> ses_enclosure_data_process
>
> for (i = 0; i < types; i++, type_ptr += 4) {
> for (j = 0; j < type_ptr[1]; j++) {
> ^^^^^^^^^^^
> out of bound
>
> With some debug log, I got following,
>
> page1 ffff88042d1aad20 len 32 types 5 type_ptr ffff88042d1aad64
>
> Would anyone please give some suggestions on this ?
>
> Thanks
> Jianchao
>

\
 
 \ /
  Last update: 2019-03-18 04:11    [W:0.053 / U:4.268 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site