netdev - RE: [Intel-wired-lan] [PATCH 2/7] i40e: Use scnprintf() for avoiding potential buffer overflow

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Date:   Mon, 16 Mar 2020 20:32:12 +0000
From:   "Bowers, AndrewX" <andrewx.bowers@...el.com>
To:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
CC:     "intel-wired-lan@...ts.osuosl.org" <intel-wired-lan@...ts.osuosl.org>
Subject: RE: [Intel-wired-lan] [PATCH 2/7] i40e: Use scnprintf() for avoiding
 potential buffer overflow

-----Original Message-----
From: Intel-wired-lan <intel-wired-lan-bounces@...osl.org> On Behalf Of Takashi Iwai
Sent: Wednesday, March 11, 2020 1:38 AM
To: netdev@...r.kernel.org
Cc: intel-wired-lan@...ts.osuosl.org; David S . Miller <davem@...emloft.net>
Subject: [Intel-wired-lan] [PATCH 2/7] i40e: Use scnprintf() for avoiding potential buffer overflow

Since snprintf() returns the would-be-output size instead of the actual output size, the succeeding calls may go beyond the given buffer limit.  Fix it by replacing with scnprintf().

Cc: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Cc: intel-wired-lan@...ts.osuosl.org
Signed-off-by: Takashi Iwai <tiwai@...e.de>
---
 drivers/net/ethernet/intel/i40e/i40e_main.c | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

Tested-by: Andrew Bowers <andrewx.bowers@...el.com>