From 5f215d252496543ba22299bccef5062d30d63cfe Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Fri, 17 Nov 2017 17:21:49 +0100 Subject: [PATCH] OMAPFB: prevent buffer underflow in omapfb_parse_vram_param() We cap the upper bound of "fbnum" but we also need to check for negatives or make the type unsigned. Signed-off-by: Dan Carpenter Cc: Tomi Valkeinen Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/video/fbdev/omap2/omapfb/omapfb-main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/video/fbdev/omap2/omapfb/omapfb-main.c b/drivers/video/fbdev/omap2/omapfb/omapfb-main.c index 1d7c012..e08e566 100644 --- a/drivers/video/fbdev/omap2/omapfb/omapfb-main.c +++ b/drivers/video/fbdev/omap2/omapfb/omapfb-main.c @@ -1477,7 +1477,7 @@ static int omapfb_alloc_fbmem_display(struct fb_info *fbi, unsigned long size, static int omapfb_parse_vram_param(const char *param, int max_entries, unsigned long *sizes, unsigned long *paddrs) { - int fbnum; + unsigned int fbnum; unsigned long size; unsigned long paddr = 0; char *p, *start; -- 2.7.4