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| author | Michael Niedermayer <michaelni@gmx.at> | 2013-01-11 00:54:12 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2013-01-11 00:58:40 +0100 |
| commit | 2c16bf2de07c68513072bf3cc96401d2c6291a3e (patch) | |
| tree | f149cc97137b55063544447861ee34120a6e239d | |
| parent | 7e5c5fa5fc8f99be66341b95257d42fa2d1f0fbb (diff) | |
| download | ffmpeg-2c16bf2de07c68513072bf3cc96401d2c6291a3e.tar.gz | |
vorbisdec: Check bark_map_size.
This fixes potential divisions by zero and out of array accesses.
Reported-by: Dale Curtis <dalecurtis@chromium.org>
Found-by: inferno@chromium.org
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | libavcodec/vorbisdec.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libavcodec/vorbisdec.c b/libavcodec/vorbisdec.c index 45096322f7..5c072e677b 100644 --- a/libavcodec/vorbisdec.c +++ b/libavcodec/vorbisdec.c @@ -597,6 +597,10 @@ static int vorbis_parse_setup_hdr_floors(vorbis_context *vc) "Floor 0 amplitude bits is 0.\n"); return AVERROR_INVALIDDATA; } + if (floor_setup->data.t0.bark_map_size == 0) { + av_log(vc->avccontext, AV_LOG_ERROR, "Floor 0 bark map size is 0.\n"); + return AVERROR_INVALIDDATA; + } floor_setup->data.t0.amplitude_offset = get_bits(gb, 8); floor_setup->data.t0.num_books = get_bits(gb, 4) + 1; |