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| author | Alex Converse <alex.converse@gmail.com> | 2012-01-25 15:27:11 -0800 |
|---|---|---|
| committer | Reinhard Tartler <siretart@tauware.de> | 2012-02-26 09:09:26 +0100 |
| commit | e364f507183634a9134eea0e004c8ae448e54469 (patch) | |
| tree | f4f47427a8412a2d5a33d7a4c65239d290f97339 | |
| parent | 571a4cf273a84b6f7f38697b462e667d4f0fddc4 (diff) | |
| download | ffmpeg-e364f507183634a9134eea0e004c8ae448e54469.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
(cherry picked from commit dac56d9ce01eb9963f28f26b97a81db5cbd46c1c)
Signed-off-by: Reinhard Tartler <siretart@tauware.de>
| -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 |