linux-kernel - Re: [Suggestion] drivers/staging/tidspbridge: strcpy and strncpy, src length checking issue.

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Date:	Sat, 05 Jan 2013 19:24:26 +0800
From:	Chen Gang <gang.chen@...anux.com>
To:	Omar Ramirez Luna <omar.ramirez@...itl.com>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [Suggestion] drivers/staging/tidspbridge: strcpy and strncpy,
 src length checking issue.

于 2013年01月05日 19:17, Omar Ramirez Luna 写道:
> Hi,
> 
> On Thu, Dec 13, 2012 at 9:50 PM, Chen Gang <gang.chen@...anux.com> wrote:
>>   in drivers/staging/tidspbridge/rmgr/proc.c:
>>
>>     if strlen(drv_datap->base_img) == size, will pass checking (line 397)
>>     the size is the full length of exec_file (line 382, line 468..469)
>>     strcpy causes issue: src len is strlen(drv_datap->base_img) + '\0'. (line 400)
> 
> Good catch.
> 
>>     strncpy seems also has issue: need use size instead of strlen(iva_img) + 1. (line 402..403)
> 
> This code is not used, it is best to remove it.
> 

  thank you.

  :-)

gchen


> Cheers,
> 
> Omar
> 
> 


-- 
Chen Gang

Asianux Corporation
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