From 028cc42a1638e6f93a857f11c2568d1c3a51e612 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Wed, 12 Dec 2012 14:27:46 +0100 Subject: [PATCH] read_gab2_sub: fix null pointer dereference Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer --- libavformat/avidec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavformat/avidec.c b/libavformat/avidec.c index 974071cdda..7436b63cfb 100644 --- a/libavformat/avidec.c +++ b/libavformat/avidec.c @@ -817,7 +817,7 @@ static int avi_read_header(AVFormatContext *s) } static int read_gab2_sub(AVStream *st, AVPacket *pkt) { - if (!strcmp(pkt->data, "GAB2") && AV_RL16(pkt->data+5) == 2) { + if (pkt->data && !strcmp(pkt->data, "GAB2") && AV_RL16(pkt->data+5) == 2) { uint8_t desc[256]; int score = AVPROBE_SCORE_MAX / 2, ret; AVIStream *ast = st->priv_data;