From 6f4d72392d76b8f78f646805ba2be995b3f77992 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Thu, 11 Jun 2009 11:04:11 -0300 Subject: [PATCH] V4L/DVB (11959): se401: Fix unsafe use of sprintf with identical source/destination Closes-bug: http://bugzilla.kernel.org/show_bug.cgi?id=13435 Signed-off-by: Alan Cox Signed-off-by: Douglas Schilling Landgraf Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/se401.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/media/video/se401.c b/drivers/media/video/se401.c index 5990ab38a12..08129a830d6 100644 --- a/drivers/media/video/se401.c +++ b/drivers/media/video/se401.c @@ -1244,17 +1244,18 @@ static int se401_init(struct usb_se401 *se401, int button) int i=0, rc; unsigned char cp[0x40]; char temp[200]; + int slen; /* led on */ se401_sndctrl(1, se401, SE401_REQ_LED_CONTROL, 1, NULL, 0); /* get camera descriptor */ rc=se401_sndctrl(0, se401, SE401_REQ_GET_CAMERA_DESCRIPTOR, 0, cp, sizeof(cp)); - if (cp[1]!=0x41) { + if (cp[1] != 0x41) { err("Wrong descriptor type"); return 1; } - sprintf (temp, "ExtraFeatures: %d", cp[3]); + slen = snprintf(temp, 200, "ExtraFeatures: %d", cp[3]); se401->sizes=cp[4]+cp[5]*256; se401->width=kmalloc(se401->sizes*sizeof(int), GFP_KERNEL); @@ -1269,9 +1270,10 @@ static int se401_init(struct usb_se401 *se401, int button) se401->width[i]=cp[6+i*4+0]+cp[6+i*4+1]*256; se401->height[i]=cp[6+i*4+2]+cp[6+i*4+3]*256; } - sprintf (temp, "%s Sizes:", temp); + slen += snprintf (temp + slen, 200 - slen, " Sizes:"); for (i=0; isizes; i++) { - sprintf(temp, "%s %dx%d", temp, se401->width[i], se401->height[i]); + slen += snprintf(temp + slen, 200 - slen, + " %dx%d", se401->width[i], se401->height[i]); } dev_info(&se401->dev->dev, "%s\n", temp); se401->maxframesize=se401->width[se401->sizes-1]*se401->height[se401->sizes-1]*3; -- 2.11.4.GIT