[FFmpeg-devel] [PATCH 4/6] avformat/demux_utils: Avoid leaking the packet in ff_add_attached_pic()

[Michael Niedermayer]

Fixes: memleak
Fixes: 67714/clusterfuzz-testcase-minimized-ffmpeg_dem_MOV_fuzzer-5671570999476224

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
---
 libavformat/demux_utils.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavformat/demux_utils.c b/libavformat/demux_utils.c
index 86f551245be..96e6e20d1ec 100644
--- a/libavformat/demux_utils.c
+++ b/libavformat/demux_utils.c
@@ -123,9 +123,9 @@ int ff_add_attached_pic(AVFormatContext *s, AVStream *st0, AVIOContext *pb,
     if (!st && !(st = avformat_new_stream(s, NULL)))
         return AVERROR(ENOMEM);
     pkt = &st->attached_pic;
+    av_packet_unref(pkt);
     if (buf) {
         av_assert1(*buf);
-        av_packet_unref(pkt);
         pkt->buf  = *buf;
         pkt->data = (*buf)->data;
         pkt->size = (*buf)->size - AV_INPUT_BUFFER_PADDING_SIZE;
-- 
2.17.1