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smackerdemux: Allocate padding for extradata

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Fixes slight overread.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-04-22 11:23:58 +02:00
parent f7c67536fe
commit 2a59abf1a8
1 changed files with 1 additions and 1 deletions
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2
libavformat/smacker.c
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@ -203,7 +203,7 @@ static int smacker_read_header(AVFormatContext *s)
/* load trees to extradata, they will be unpacked by decoder */
st->codec->extradata = av_malloc(smk->treesize + 16);
st->codec->extradata = av_malloc(smk->treesize + 16 + FF_INPUT_BUFFER_PADDING_SIZE);
st->codec->extradata_size = smk->treesize + 16;
if(!st->codec->extradata){
av_log(s, AV_LOG_ERROR, "Cannot allocate %i bytes of extradata\n", smk->treesize + 16);