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| author | Michael Niedermayer <michael@niedermayer.cc> | 2018-06-05 03:17:24 +0300 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-07-10 02:52:56 +0300 |
| commit | ce4cb475a3714def0ad80a5ad74f2c9c90683f88 (patch) | |
| tree | cfd266ba0426b930986d684c2df414744d802788 /libavcodec/mjpegdec.c | |
| parent | ea0734e3f011964e12da5f7d8dacf4a86670cbf0 (diff) | |
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>
Diffstat (limited to 'libavcodec/mjpegdec.c')
| -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 2e101225b6..e061742ad2 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) { |