diff options
| author | Michael Niedermayer <michael@niedermayer.cc> | 2018-06-05 02:17:24 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-07-08 19:45:47 +0200 |
| commit | e520692e14af5ec6ca04cc680b0beb65a673894f (patch) | |
| tree | 3cd1f61745096f8a717f1692e7abebbb6410863f | |
| parent | 89c2b515794accc4e331ed0ad07082b7a6ca8d10 (diff) | |
| download | ffmpeg-e520692e14af5ec6ca04cc680b0beb65a673894f.tar.gz | |
avcodec/mjpegdec: Fix integer overflow in ljpeg_decode_rgb_scan()
Fixes: signed integer overflow: 32768 + 2147450880 cannot be represented in type 'int'
Fixes: 7885/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_THP_fuzzer-5298834394578944
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 936f4a2c2e14ec753e8835f2e820b4cd9aec9a56)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/mjpegdec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/mjpegdec.c b/libavcodec/mjpegdec.c index 4daa909aa3..e4a057bc8f 100644 --- a/libavcodec/mjpegdec.c +++ b/libavcodec/mjpegdec.c @@ -1008,7 +1008,7 @@ static int ljpeg_decode_rgb_scan(MJpegDecodeContext *s, int nb_components, int p return -1; left[i] = buffer[mb_x][i] = - mask & (pred + (dc * (1 << point_transform))); + mask & (pred + (unsigned)(dc * (1 << point_transform))); } if (s->restart_interval && !--s->restart_count) { |