From f40298444e8ca13789dc002ffb269c343aadfb87 Mon Sep 17 00:00:00 2001 From: YueHaibing Date: Fri, 8 Feb 2019 19:24:49 +0100 Subject: video: fbdev: Fix potential NULL pointer dereference There is a potential NULL pointer dereference in case fb_create_modedb() fails and returns NULL. Signed-off-by: YueHaibing Cc: Kees Cook Cc: Rob Herring Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/video/fbdev/core/fbmon.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/video') diff --git a/drivers/video/fbdev/core/fbmon.c b/drivers/video/fbdev/core/fbmon.c index dd3128990776..3558a70a6664 100644 --- a/drivers/video/fbdev/core/fbmon.c +++ b/drivers/video/fbdev/core/fbmon.c @@ -978,6 +978,8 @@ void fb_edid_to_monspecs(unsigned char *edid, struct fb_monspecs *specs) get_monspecs(edid, specs); specs->modedb = fb_create_modedb(edid, &specs->modedb_len, specs); + if (!specs->modedb) + return; /* * Workaround for buggy EDIDs that sets that the first -- cgit v1.2.3