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avcodec/vvc/refs: Check content_ref in set_pict_type()

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Fixes: 390565846/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VVC_fuzzer-4990028521996288
Fixes: Null pointer dereference

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
2025-02-02 22:17:21 +01:00
committed by Nuo Mi
parent 3698570442
commit a50d36b5fd
1 changed files with 1 additions and 1 deletions
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libavcodec/vvc/refs.c
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@ -186,7 +186,7 @@ static void set_pict_type(AVFrame *frame, const VVCContext *s, const VVCFrameCon
const CodedBitstreamFragment *current = &s->current_frame; const CodedBitstreamFragment *current = &s->current_frame;
for (int i = 0; i < current->nb_units && !has_b; i++) { for (int i = 0; i < current->nb_units && !has_b; i++) {
const CodedBitstreamUnit *unit = current->units + i; const CodedBitstreamUnit *unit = current->units + i;
if (unit->type <= VVC_RSV_IRAP_11) { if (unit->content_ref && unit->type <= VVC_RSV_IRAP_11) {
const H266RawSliceHeader *rsh = unit->content_ref; const H266RawSliceHeader *rsh = unit->content_ref;
has_inter |= !IS_I(rsh); has_inter |= !IS_I(rsh);
has_b |= IS_B(rsh); has_b |= IS_B(rsh);