diff options
| author | Michael Niedermayer <michael@niedermayer.cc> | 2018-06-05 02:17:24 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-10-23 01:44:40 +0200 |
| commit | 0c645bd73c7a80d7fbe4b21e4487520d7dd280b4 (patch) | |
| tree | 615af4fe9d393d23a94381ca164b2130e999d1e7 | |
| parent | aee71463fb2f1224e273d4f612ee7d6d63206219 (diff) | |
| download | ffmpeg-0c645bd73c7a80d7fbe4b21e4487520d7dd280b4.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 2ce351ddbc..713526be4c 100644 --- a/libavcodec/mjpegdec.c +++ b/libavcodec/mjpegdec.c @@ -1002,7 +1002,7 @@ 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) { |