[FFmpeg-devel] [PATCH 1/2] avcodec/vvc/vvcdec: allow vvc_decode_close() on failed open
Michael Niedermayer
michael at niedermayer.cc
Wed Feb 28 00:47:07 EET 2024
Fixes: division by 0
Fixes: 67008/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VVC_fuzzer-5873503163187200
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/vvcdec.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/libavcodec/vvc/vvcdec.c b/libavcodec/vvc/vvcdec.c
index f024cbd067..570e2aa513 100644
--- a/libavcodec/vvc/vvcdec.c
+++ b/libavcodec/vvc/vvcdec.c
@@ -950,13 +950,14 @@ static av_cold void vvc_decode_flush(AVCodecContext *avctx)
{
VVCContext *s = avctx->priv_data;
int got_output = 0;
- VVCFrameContext *last;
while (s->nb_delayed)
wait_delayed_frame(s, NULL, &got_output);
- last = get_frame_context(s, s->fcs, s->nb_frames - 1);
- ff_vvc_flush_dpb(last);
+ if (s->fcs) {
+ VVCFrameContext *last = get_frame_context(s, s->fcs, s->nb_frames - 1);
+ ff_vvc_flush_dpb(last);
+ }
s->eos = 1;
}
--
2.17.1
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