Re: [PATCH 02/14] cx18: avoid going past input/audio array

[Andy Walls]

On April 28, 2015 11:43:41 AM EDT, Mauro Carvalho Chehab 
 wrote:
>As reported by smatch:
>   drivers/media/pci/cx18/cx18-driver.c:807 cx18_init_struct2() error:
>buffer overflow 'cx->card->video_inputs' 6 <= 6
>
>That happens because nof_inputs and nof_audio_inputs can be initialized
>as CX18_CARD_MAX_VIDEO_INPUTS, instead of CX18_CARD_MAX_VIDEO_INPUTS -
>1.
>
>Signed-off-by: Mauro Carvalho Chehab 
>
>diff --git a/drivers/media/pci/cx18/cx18-driver.c
>b/drivers/media/pci/cx18/cx18-driver.c
>index 83f5074706f9..260e462d91b4 100644
>--- a/drivers/media/pci/cx18/cx18-driver.c
>+++ b/drivers/media/pci/cx18/cx18-driver.c
>@@ -786,11 +786,11 @@ static void cx18_init_struct2(struct cx18 *cx)
> {
>   int i;
> 
>-  for (i = 0; i < CX18_CARD_MAX_VIDEO_INPUTS; i++)
>+  for (i = 0; i < CX18_CARD_MAX_VIDEO_INPUTS - 1; i++)
>   if (cx->card->video_inputs[i].video_type == 0)
>   break;
>   cx->nof_inputs = i;
>-  for (i = 0; i < CX18_CARD_MAX_AUDIO_INPUTS; i++)
>+  for (i = 0; i < CX18_CARD_MAX_AUDIO_INPUTS - 1; i++)
>   if (cx->card->audio_inputs[i].audio_type == 0)
>   break;
>   cx->nof_audio_inputs = i;

Acked-by: Andy Walls 
--
To unsubscribe from this list: send the line "unsubscribe linux-media" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[PATCH 02/14] cx18: avoid going past input/audio array

[Mauro Carvalho Chehab]

As reported by smatch:
drivers/media/pci/cx18/cx18-driver.c:807 cx18_init_struct2() error: 
buffer overflow 'cx->card->video_inputs' 6 <= 6

That happens because nof_inputs and nof_audio_inputs can be initialized
as CX18_CARD_MAX_VIDEO_INPUTS, instead of CX18_CARD_MAX_VIDEO_INPUTS - 1.

Signed-off-by: Mauro Carvalho Chehab 

diff --git a/drivers/media/pci/cx18/cx18-driver.c 
b/drivers/media/pci/cx18/cx18-driver.c
index 83f5074706f9..260e462d91b4 100644
--- a/drivers/media/pci/cx18/cx18-driver.c
+++ b/drivers/media/pci/cx18/cx18-driver.c
@@ -786,11 +786,11 @@ static void cx18_init_struct2(struct cx18 *cx)
 {
int i;
 
-   for (i = 0; i < CX18_CARD_MAX_VIDEO_INPUTS; i++)
+   for (i = 0; i < CX18_CARD_MAX_VIDEO_INPUTS - 1; i++)
if (cx->card->video_inputs[i].video_type == 0)
break;
cx->nof_inputs = i;
-   for (i = 0; i < CX18_CARD_MAX_AUDIO_INPUTS; i++)
+   for (i = 0; i < CX18_CARD_MAX_AUDIO_INPUTS - 1; i++)
if (cx->card->audio_inputs[i].audio_type == 0)
break;
cx->nof_audio_inputs = i;
-- 
2.1.0

--
To unsubscribe from this list: send the line "unsubscribe linux-media" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html