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| author | Justin Ruggles <justin.ruggles@gmail.com> | 2012-10-23 13:17:50 -0400 |
|---|---|---|
| committer | Justin Ruggles <justin.ruggles@gmail.com> | 2012-11-01 11:29:19 -0400 |
| commit | b5f628e227743fc1725a28b5b21f538a40efca82 (patch) | |
| tree | 218a7bde58a7b94a75531fdf535043bf55173d9a /libavcodec | |
| parent | 335826cf5f7169199ed0a8d3a61f697ec0438d30 (diff) | |
| download | ffmpeg-b5f628e227743fc1725a28b5b21f538a40efca82.tar.gz | |
twinvq: validate sample rate code
A large invalid value could cause undefined behavior when left-shifted
by 8 later in the function.
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/twinvq.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libavcodec/twinvq.c b/libavcodec/twinvq.c index 3159e498e7..7af370ee5a 100644 --- a/libavcodec/twinvq.c +++ b/libavcodec/twinvq.c @@ -1120,6 +1120,11 @@ static av_cold int twin_decode_init(AVCodecContext *avctx) avctx->channels = AV_RB32(avctx->extradata ) + 1; avctx->bit_rate = AV_RB32(avctx->extradata + 4) * 1000; isampf = AV_RB32(avctx->extradata + 8); + + if (isampf < 8 || isampf > 44) { + av_log(avctx, AV_LOG_ERROR, "Unsupported sample rate\n"); + return AVERROR_INVALIDDATA; + } switch (isampf) { case 44: avctx->sample_rate = 44100; break; case 22: avctx->sample_rate = 22050; break; |