Browse Source

qdm2: Check data block size for bytes to bits overflow.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind

CC: libav-stable@libav.org
tags/n0.11
Alex Converse 13 years ago
parent
commit
dac56d9ce0
1 changed files with 4 additions and 0 deletions
  1. +4
    -0
      libavcodec/qdm2.c

+ 4
- 0
libavcodec/qdm2.c View File

@@ -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


Loading…
Cancel
Save