Fixes: out of array read Fixes: 17617/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_HCOM_fuzzer-5674970478280704
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/hcom.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/libavcodec/hcom.c b/libavcodec/hcom.c index bce9e80aa5..0559b050c3 100644 --- a/libavcodec/hcom.c +++ b/libavcodec/hcom.c @@ -52,7 +52,8 @@ static av_cold int hcom_init(AVCodecContext *avctx) if (avctx->extradata_size <= 7) return AVERROR_INVALIDDATA; s->dict_entries = AV_RB16(avctx->extradata); - if (avctx->extradata_size < s->dict_entries * 4 + 7) + if (avctx->extradata_size < s->dict_entries * 4 + 7 || + s->dict_entries == 0) return AVERROR_INVALIDDATA; s->delta_compression = AV_RB32(avctx->extradata + 2); s->sample = s->first_sample = avctx->extradata[avctx->extradata_size - 1]; -- 2.23.0 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
