netdev - possible off by one error in drivers/isdn/hysdn/hysdn

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Message-ID: <BLU108-W2512CBD9073AB7248051419C000@phx.gbl>
Date:	Fri, 30 Apr 2010 21:23:15 +0000
From:	d binderman <dcb314@...mail.com>
To:	<isdn@...ux-pingi.de>
CC:	<netdev@...r.kernel.org>
Subject: possible off by one error in drivers/isdn/hysdn/hysdn_proclog.c



Hello there,

I've just been looking at the Linux kernel linux-2.6.34-rc6.  I notice the
source code in file drivers/isdn/hysdn/hysdn_proclog.c, around line 115 is

        if (!(ib = kmalloc(sizeof(struct log_data) + strlen(cp), GFP_ATOMIC)))
                 return;        /* no memory */
        strcpy(ib->log_start, cp);      /* set output string */


Shouldn't that be

        if (!(ib = kmalloc(sizeof(struct log_data) + strlen(cp) + 1, GFP_ATOMIC)))
                 return;        /* no memory */
        strcpy(ib->log_start, cp);      /* set output string */

+1 for the zero byte ?

Regards

David Binderman

 		 	   		  
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