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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-06-05 18:22:51 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-06-11 13:49:54 +0200 |
| commit | d7a2311a2c5be1e861c3df618d295e7eced8e84b (patch) | |
| tree | 4de7e59fa78ff9c283bef14ffca0ab0d0d2e37d4 /libavcodec/movtextdec.c | |
| parent | d3747f44315e2c6a07fcb85c973b863dd1a6614a (diff) | |
| download | ffmpeg-d7a2311a2c5be1e861c3df618d295e7eced8e84b.tar.gz | |
avcodec/movtextdec: Fix shift overflows in mov_text_init()
Fixes: left shift of 243 by 24 places cannot be represented in type 'int'
Fixes: 22716/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MOVTEXT_fuzzer-5704263425851392
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec/movtextdec.c')
| -rw-r--r-- | libavcodec/movtextdec.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/libavcodec/movtextdec.c b/libavcodec/movtextdec.c index 4b4da5e0d9..4a21dbf36d 100644 --- a/libavcodec/movtextdec.c +++ b/libavcodec/movtextdec.c @@ -492,10 +492,10 @@ static int mov_text_init(AVCodecContext *avctx) { return ff_ass_subtitle_header_full(avctx, m->frame_width, m->frame_height, m->d.font, m->d.fontsize, - (255 - m->d.alpha) << 24 | RGB_TO_BGR(m->d.color), - (255 - m->d.alpha) << 24 | RGB_TO_BGR(m->d.color), - (255 - m->d.back_alpha) << 24 | RGB_TO_BGR(m->d.back_color), - (255 - m->d.back_alpha) << 24 | RGB_TO_BGR(m->d.back_color), + (255U - m->d.alpha) << 24 | RGB_TO_BGR(m->d.color), + (255U - m->d.alpha) << 24 | RGB_TO_BGR(m->d.color), + (255U - m->d.back_alpha) << 24 | RGB_TO_BGR(m->d.back_color), + (255U - m->d.back_alpha) << 24 | RGB_TO_BGR(m->d.back_color), m->d.bold, m->d.italic, m->d.underline, ASS_DEFAULT_BORDERSTYLE, m->d.alignment); } else |