Commit 8a644916 authored by Michael Niedermayer's avatar Michael Niedermayer

avcodec_decode_audio4: check got_frame_ptr before handling initial skip

Fixes out of array accesses

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: 's avatarMichael Niedermayer <>
parent 47619e41
......@@ -1831,7 +1831,7 @@ int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
av_log(avctx, AV_LOG_DEBUG, "skip %d samples due to side data\n",
if (avctx->internal->skip_samples) {
if (avctx->internal->skip_samples && *got_frame_ptr) {
if(frame->nb_samples <= avctx->internal->skip_samples){
*got_frame_ptr = 0;
avctx->internal->skip_samples -= frame->nb_samples;
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