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avcodec/pngdec: check for stream end in png_decode_idat()

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Fix infinite loop
Fix Ticket2978

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-09-25 02:08:04 +02:00
parent bb4b041df3
commit 65bf9a44d7
1 changed files with 2 additions and 0 deletions
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2
libavcodec/pngdec.c
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@ -381,6 +381,8 @@ static int png_decode_idat(PNGDecContext *s, int length)
s->zstream.avail_out = s->crow_size; s->zstream.avail_out = s->crow_size;
s->zstream.next_out = s->crow_buf; s->zstream.next_out = s->crow_buf;
} }
if (ret == Z_STREAM_END)
break;
} }
return 0; return 0;
} }