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| author | Andreas Cadhalpun <andreas.cadhalpun@googlemail.com> | 2015-04-16 14:49:08 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2015-04-25 15:06:54 +0200 |
| commit | 65b257b21c7f4398458fe17af3c99e8a0d717a0c (patch) | |
| tree | 006ec41bfd32bbef86024cdbccc46ce0588cebdd | |
| parent | 164ababc623884c862d01e98824c19f91919f0be (diff) | |
| download | ffmpeg-65b257b21c7f4398458fe17af3c99e8a0d717a0c.tar.gz | |
msrledec: use signed pixel_ptr in msrle_decode_pal4
This fixes segmentation faults, when pic->linesize[0] is negative.
In that case 'line * pic->linesize[0] + pixel_ptr' is treated as
unsigned and wraps around.
This reverts commit 7d78a964.
The problem was introduced in commit f7e1367f, which should obsolete
that commit.
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit ae6fd7300b4e9f81d3b5ba201096ffe7cccf26fb)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | libavcodec/msrledec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/msrledec.c b/libavcodec/msrledec.c index deb6f86523..200221a0ee 100644 --- a/libavcodec/msrledec.c +++ b/libavcodec/msrledec.c @@ -36,7 +36,7 @@ static int msrle_decode_pal4(AVCodecContext *avctx, AVPicture *pic, unsigned char rle_code; unsigned char extra_byte, odd_pixel; unsigned char stream_byte; - unsigned int pixel_ptr = 0; + int pixel_ptr = 0; int line = avctx->height - 1; int i; |