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parser: fix large overreads

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>
This commit is contained in:
Michael Niedermayer
2012-10-03 16:06:23 +02:00
committed by Justin Ruggles
parent 41540b36a1
commit 096abfa150
1 changed files with 3 additions and 1 deletions
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4
libavcodec/parser.c
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@@ -254,7 +254,9 @@ int ff_combine_frame(ParseContext *pc, int next, const uint8_t **buf, int *buf_s
if(!new_buffer)
return AVERROR(ENOMEM);
pc->buffer = new_buffer;
memcpy(&pc->buffer[pc->index], *buf, next + FF_INPUT_BUFFER_PADDING_SIZE );
if (next > -FF_INPUT_BUFFER_PADDING_SIZE)
memcpy(&pc->buffer[pc->index], *buf,
next + FF_INPUT_BUFFER_PADDING_SIZE);
pc->index = 0;
*buf= pc->buffer;
}