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| author | Michael Niedermayer <michaelni@gmx.at> | 2013-05-21 21:36:32 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2013-05-21 21:44:34 +0200 |
| commit | 069ede29811685ed7b2cf958471eee455aab2077 (patch) | |
| tree | 5e57c193affc793ae77b7c38ebae339327e7ccc9 /libavcodec/jpeg2000dec.c | |
| parent | 78c7bff04ac5180b47e739edbe015ff6b11bf0b9 (diff) | |
| download | ffmpeg-069ede29811685ed7b2cf958471eee455aab2077.tar.gz | |
jpeg2000dec: Check ncomponents and tile dimensions
Fixes various problems
Code ported from j2kdec
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/jpeg2000dec.c')
| -rw-r--r-- | libavcodec/jpeg2000dec.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/libavcodec/jpeg2000dec.c b/libavcodec/jpeg2000dec.c index f7e6b6e8ab..60489be0a3 100644 --- a/libavcodec/jpeg2000dec.c +++ b/libavcodec/jpeg2000dec.c @@ -176,6 +176,13 @@ static int get_siz(Jpeg2000DecoderContext *s) s->tile_offset_y = bytestream_get_be32(&s->buf); // YT0Siz s->ncomponents = bytestream_get_be16(&s->buf); // CSiz + if(s->ncomponents <= 0 || s->ncomponents > 4) { + av_log(s->avctx, AV_LOG_ERROR, "unsupported/invalid ncomponents: %d\n", s->ncomponents); + return AVERROR(EINVAL); + } + if(s->tile_width<=0 || s->tile_height<=0) + return AVERROR(EINVAL); + if (s->buf_end - s->buf < 2 * s->ncomponents) return AVERROR(EINVAL); |