[FFmpeg-devel] [PATCH 2/5] avcodec/vp3: Call ff_progress_frame_unref() before ff_progress_frame_get_buffer()

[Michael Niedermayer]

Fixes: Assertion !f->f && !f->progress failed at libavcodec/decode.c:1688
Fixes: 68190/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_THEORA_fuzzer-5942090287611904

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
---
 libavcodec/vp3.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libavcodec/vp3.c b/libavcodec/vp3.c
index 2a5f68dfa8e..09527607767 100644
--- a/libavcodec/vp3.c
+++ b/libavcodec/vp3.c
@@ -2651,6 +2651,7 @@ static int vp3_decode_frame(AVCodecContext *avctx, AVFrame *frame,
     if (avctx->skip_frame >= AVDISCARD_NONKEY && !s->keyframe)
         return buf_size;
 
+    ff_progress_frame_unref(&s->current_frame);
     ret = ff_progress_frame_get_buffer(avctx, &s->current_frame,
                                        AV_GET_BUFFER_FLAG_REF);
     if (ret < 0) {
-- 
2.43.2