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avcodec/tta: Limit decoder to 16 channels 

libtta 2.3 has a limit of 6 channels, so 16 is substantially above the "official" already

Fixes: OOM
Fixes: 15249/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TTA_fuzzer-5643988125614080

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 2019-06-28 20:02:32 +02:00
parent 936ca7f101
commit 17209e48e2
1 changed files with 1 additions and 1 deletions
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2
libavcodec/tta.c
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@ -163,7 +163,7 @@ static av_cold int tta_decode_init(AVCodecContext * avctx)
s->data_length = get_bits_long(&gb, 32);
skip_bits_long(&gb, 32); // CRC32 of header
if (s->channels == 0) {
if (s->channels == 0 || s->channels > 16) {
av_log(avctx, AV_LOG_ERROR, "Invalid number of channels\n");
return AVERROR_INVALIDDATA;
} else if (avctx->sample_rate == 0) {