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smacker: pad the extradata allocation

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Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
(cherry picked from commit 4c22baf65363433f8c20efd1022b4ba2d8cf2288)

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
This commit is contained in:
Kostya Shishkov
2013-06-12 14:28:07 +02:00
committed by Luca Barbato
parent 5e6122ddad
commit 71b8ef938c
1 changed files with 2 additions and 1 deletions
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3
libavformat/smacker.c
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@@ -210,7 +210,8 @@ 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_mallocz(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);