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dvdsubdec: validate offset2 similar to offset1

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If it is negative, it causes segmentation faults in decode_rle.

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
(cherry picked from commit f621749d1181987b3f815c6766ea66d6c5d55198)
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
This commit is contained in:
Andreas Cadhalpun 2015-11-10 22:14:39 +01:00
parent 4dc7e2dd82
commit d5009d6b6d
1 changed files with 1 additions and 1 deletions
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2
libavcodec/dvdsubdec.c
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@ -346,7 +346,7 @@ static int decode_dvd_subtitles(DVDSubContext *ctx, AVSubtitle *sub_header,
} }
} }
the_end: the_end:
if (offset1 >= 0) { if (offset1 >= 0 && offset2 >= 0) {
int w, h; int w, h;
uint8_t *bitmap; uint8_t *bitmap;