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avcodec/vvc/vvcdec: allow vvc_decode_close() on failed open

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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@niedermayer.cc>
This commit is contained in:
Michael Niedermayer
2024-02-27 23:47:07 +01:00
committed by Nuo Mi
parent 45c612702f
commit b95c0d93ff
1 changed files with 4 additions and 3 deletions
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7
libavcodec/vvc/vvcdec.c
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@@ -950,13 +950,14 @@ static av_cold void vvc_decode_flush(AVCodecContext *avctx)
{ {
VVCContext *s = avctx->priv_data; VVCContext *s = avctx->priv_data;
int got_output = 0; int got_output = 0;
VVCFrameContext *last;
while (s->nb_delayed) while (s->nb_delayed)
wait_delayed_frame(s, NULL, &got_output); wait_delayed_frame(s, NULL, &got_output);
last = get_frame_context(s, s->fcs, s->nb_frames - 1); if (s->fcs) {
ff_vvc_flush_dpb(last); VVCFrameContext *last = get_frame_context(s, s->fcs, s->nb_frames - 1);
ff_vvc_flush_dpb(last);
}
s->eos = 1; s->eos = 1;
} }