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avcodec/decode: Also consider channels in max_samples check

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Fixes: Timeout (109sec -> 0.6sec)
Fixes: 18309/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_INTERPLAY_ACM_fuzzer-6226598168100864

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 2019-10-18 22:24:04 +02:00
parent 17603094d5
commit 20fad71247
1 changed files with 1 additions and 1 deletions
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libavcodec/decode.c
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@ -1925,7 +1925,7 @@ static int get_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
return AVERROR(EINVAL);
}
} else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
if (frame->nb_samples > avctx->max_samples) {
if (frame->nb_samples * avctx->channels > avctx->max_samples) {
av_log(avctx, AV_LOG_ERROR, "samples per frame %d, exceeds max_samples %"PRId64"\n", frame->nb_samples, avctx->max_samples);
return AVERROR(EINVAL);
}