[FFmpeg-devel] [PATCH 05/10] avcodec/vvc/thread: Check frame to be non NULL

[Michael Niedermayer]

Fixes: NULL pointer dereference
Fixes: 71303/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VVC_fuzzer-4875859050168320

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/vvc/thread.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libavcodec/vvc/thread.c b/libavcodec/vvc/thread.c
index 86a7753c6a4..2bf9adc462e 100644
--- a/libavcodec/vvc/thread.c
+++ b/libavcodec/vvc/thread.c
@@ -837,7 +837,8 @@ int ff_vvc_frame_wait(VVCContext *s, VVCFrameContext *fc)
         ff_cond_wait(&ft->cond, &ft->lock);
 
     ff_mutex_unlock(&ft->lock);
-    ff_vvc_report_frame_finished(fc->ref);
+    if (fc->ref)
+        ff_vvc_report_frame_finished(fc->ref);
 
 #ifdef VVC_THREAD_DEBUG
     av_log(s->avctx, AV_LOG_DEBUG, "frame %5d done\r\n", (int)fc->decode_order);
-- 
2.46.1