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authorDan Carpenter <dan.carpenter@oracle.com>2017-11-17 17:21:49 +0100
committerBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>2017-11-17 17:21:49 +0100
commit5f215d252496543ba22299bccef5062d30d63cfe (patch)
treea991f9862eb12e91ded049f2059a894f4eeb785d /drivers/video
parent5fa1f45de8fd697d9f23050e20dd65c0998e6107 (diff)
downloadlinux-5f215d252496543ba22299bccef5062d30d63cfe.tar.bz2
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 <dan.carpenter@oracle.com> Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Diffstat (limited to 'drivers/video')
-rw-r--r--drivers/video/fbdev/omap2/omapfb/omapfb-main.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/video/fbdev/omap2/omapfb/omapfb-main.c b/drivers/video/fbdev/omap2/omapfb/omapfb-main.c
index 1d7c012f09db..e08e5664e330 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;