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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-05-24 19:40:42 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-06-02 01:14:38 +0200 |
| commit | 38fd2a33b93c658765f7f1e64d594dc7cb6280de (patch) | |
| tree | ac55c1e2ad78cdc022e3bea912474905619d86dd | |
| parent | 861c05b286f2f4cf6c5a621977e3957bb6c30ad9 (diff) | |
| download | ffmpeg-38fd2a33b93c658765f7f1e64d594dc7cb6280de.tar.gz | |
avcodec/jpeg2000dec: Check tile offsets
Fixes: runtime error: signed integer overflow: 4096 - -2147483648 cannot be represented in type 'int'
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 89325417e7b33f4b08171d9d609c48662d96b2d3)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/jpeg2000dec.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/libavcodec/jpeg2000dec.c b/libavcodec/jpeg2000dec.c index e9f5f51af3..b320c41c3a 100644 --- a/libavcodec/jpeg2000dec.c +++ b/libavcodec/jpeg2000dec.c @@ -298,6 +298,14 @@ static int get_siz(Jpeg2000DecoderContext *s) return AVERROR_PATCHWELCOME; } + if (s->tile_offset_x < 0 || s->tile_offset_y < 0 || + s->image_offset_x < s->tile_offset_x || + s->image_offset_y < s->tile_offset_y) { + av_log(s->avctx, AV_LOG_ERROR, "Tile offsets are invalid\n", + s->ncomponents); + return AVERROR_INVALIDDATA; + } + s->ncomponents = ncomponents; if (s->tile_width <= 0 || s->tile_height <= 0) { |