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| author | Alex Converse <alex.converse@gmail.com> | 2012-01-25 15:27:11 -0800 |
|---|---|---|
| committer | Alex Converse <alex.converse@gmail.com> | 2012-01-26 10:17:04 -0800 |
| commit | dac56d9ce01eb9963f28f26b97a81db5cbd46c1c (patch) | |
| tree | 869465ef200d78f84fcca8b13413e7f0dc3343d6 /libavcodec | |
| parent | 62271c4c9a1a4bea6c3de88019429d7f88c847ec (diff) | |
| download | ffmpeg-dac56d9ce01eb9963f28f26b97a81db5cbd46c1c.tar.gz | |
qdm2: Check data block size for bytes to bits overflow.
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Diffstat (limited to 'libavcodec')
| -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 91c47a8ec2..6acb7d8362 100644 --- a/libavcodec/qdm2.c +++ b/libavcodec/qdm2.c @@ -1819,6 +1819,10 @@ static av_cold int qdm2_decode_init(AVCodecContext *avctx) extradata += 4; s->checksum_size = AV_RB32(extradata); + if (s->checksum_size >= 1U << 28) { + av_log(avctx, AV_LOG_ERROR, "data block size too large (%u)\n", s->checksum_size); + return AVERROR_INVALIDDATA; + } s->fft_order = av_log2(s->fft_size) + 1; s->fft_frame_size = 2 * s->fft_size; // complex has two floats |