[FFmpeg-cvslog] avformat/ipmovie: Free packets allocated in header reading

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Mon Feb  1 19:47:16 2021 +0100| [712d3ac539f30239b764d8621829dc9dc913da61] | committer: Michael Niedermayer

avformat/ipmovie: Free packets allocated in header reading

Fixes: memleaks
Fixes: 29905/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-5679700745781248

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=712d3ac539f30239b764d8621829dc9dc913da61
---

 libavformat/ipmovie.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/libavformat/ipmovie.c b/libavformat/ipmovie.c
index 137c857700..3234d591da 100644
--- a/libavformat/ipmovie.c
+++ b/libavformat/ipmovie.c
@@ -661,8 +661,10 @@ static int ipmovie_read_header(AVFormatContext *s)
         ipmovie->palette[i] = 0xFFU << 24;
 
     /* process the first chunk which should be CHUNK_INIT_VIDEO */
-    if (process_ipmovie_chunk(ipmovie, pb, &pkt) != CHUNK_INIT_VIDEO)
+    if (process_ipmovie_chunk(ipmovie, pb, &pkt) != CHUNK_INIT_VIDEO) {
+        av_packet_unref(&pkt);
         return AVERROR_INVALIDDATA;
+    }
 
     /* peek ahead to the next chunk-- if it is an init audio chunk, process
      * it; if it is the first video chunk, this is a silent file */
@@ -674,8 +676,10 @@ static int ipmovie_read_header(AVFormatContext *s)
 
     if (chunk_type == CHUNK_VIDEO)
         ipmovie->audio_type = AV_CODEC_ID_NONE;  /* no audio */
-    else if (process_ipmovie_chunk(ipmovie, pb, &pkt) != CHUNK_INIT_AUDIO)
+    else if (process_ipmovie_chunk(ipmovie, pb, &pkt) != CHUNK_INIT_AUDIO) {
+        av_packet_unref(&pkt);
         return AVERROR_INVALIDDATA;
+    }
 
     /* initialize the stream decoders */
     st = avformat_new_stream(s, NULL);