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parser: fix large overreads

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-10-03 16:06:23 +02:00
parent 1e2e2c8095
commit 6a697b42d0
1 changed files with 1 additions and 0 deletions
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libavcodec/parser.c
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@ -261,6 +261,7 @@ int ff_combine_frame(ParseContext *pc, int next, const uint8_t **buf, int *buf_s
if(!new_buffer) if(!new_buffer)
return AVERROR(ENOMEM); return AVERROR(ENOMEM);
pc->buffer = new_buffer; pc->buffer = new_buffer;
if(FF_INPUT_BUFFER_PADDING_SIZE > -next)
memcpy(&pc->buffer[pc->index], *buf, next + FF_INPUT_BUFFER_PADDING_SIZE ); memcpy(&pc->buffer[pc->index], *buf, next + FF_INPUT_BUFFER_PADDING_SIZE );
pc->index = 0; pc->index = 0;
*buf= pc->buffer; *buf= pc->buffer;