ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Wed Mar 8 21:41:34 2017 +0100| [800d02abe041deacab5585bf41c1bc2ae5f4b922] | committer: Michael Niedermayer
avcodec/mjpegdec: Fix runtime error: left shift of negative value -127 Fixes: 733/clusterfuzz-testcase-4682158096515072 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=800d02abe041deacab5585bf41c1bc2ae5f4b922 --- libavcodec/mjpegdec.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libavcodec/mjpegdec.c b/libavcodec/mjpegdec.c index 2b5adfc..4e78e1e 100644 --- a/libavcodec/mjpegdec.c +++ b/libavcodec/mjpegdec.c @@ -1196,13 +1196,13 @@ static int ljpeg_decode_yuv_scan(MJpegDecodeContext *s, int predictor, PREDICT(pred, ptr[-linesize-1], ptr[-linesize], ptr[-1], predictor); pred &= mask; - *ptr = pred + (dc << point_transform); + *ptr = pred + ((unsigned)dc << point_transform); }else{ ptr16 = (uint16_t*)(s->picture_ptr->data[c] + 2*(linesize * (v * mb_y + y)) + 2*(h * mb_x + x)); //FIXME optimize this crap PREDICT(pred, ptr16[-linesize-1], ptr16[-linesize], ptr16[-1], predictor); pred &= mask; - *ptr16= pred + (dc << point_transform); + *ptr16= pred + ((unsigned)dc << point_transform); } if (++x == h) { _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
