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| author | Laurent Aimar <fenrir@videolan.org> | 2011-10-01 00:45:05 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2011-10-01 02:41:40 +0200 |
| commit | 4a7876c6e4e62e94d51e364ba99aae4da7671238 (patch) | |
| tree | 51214a9dc16c72d8862915fa0946ca5fd3100720 /libavcodec/qdm2.c | |
| parent | 491eaf35ae1f9b619441314bec33766e31580184 (diff) | |
| download | ffmpeg-4a7876c6e4e62e94d51e364ba99aae4da7671238.tar.gz | |
Check for out of bound writes in the QDM2 decoder.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/qdm2.c')
| -rw-r--r-- | libavcodec/qdm2.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libavcodec/qdm2.c b/libavcodec/qdm2.c index 2827746722..0b74c167a9 100644 --- a/libavcodec/qdm2.c +++ b/libavcodec/qdm2.c @@ -1800,6 +1800,8 @@ static av_cold int qdm2_decode_init(AVCodecContext *avctx) avctx->channels = s->nb_channels = s->channels = AV_RB32(extradata); extradata += 4; + if (s->channels > MPA_MAX_CHANNELS) + return AVERROR_INVALIDDATA; avctx->sample_rate = AV_RB32(extradata); extradata += 4; @@ -1821,6 +1823,8 @@ static av_cold int qdm2_decode_init(AVCodecContext *avctx) // something like max decodable tones s->group_order = av_log2(s->group_size) + 1; s->frame_size = s->group_size / 16; // 16 iterations per super block + if (s->frame_size > FF_ARRAY_ELEMS(s->output_buffer) / 2) + return AVERROR_INVALIDDATA; s->sub_sampling = s->fft_order - 7; s->frequency_range = 255 / (1 << (2 - s->sub_sampling)); |