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j2kdec: Check curtileno for validity

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2011-12-24 05:06:20 +01:00
parent 3132999fdb
commit 3eedf9f716
1 changed files with 4 additions and 0 deletions
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4
libavcodec/j2kdec.c
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@ -427,6 +427,10 @@ static uint8_t get_sot(J2kDecoderContext *s)
return AVERROR(EINVAL);
s->curtileno = bytestream_get_be16(&s->buf); ///< Isot
if((unsigned)s->curtileno >= s->numXtiles * s->numYtiles){
s->curtileno=0;
return AVERROR(EINVAL);
}
s->buf += 4; ///< Psot (ignored)