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flashsv2_prime: check block before using it.

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Fixes null pointer dereference

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-12-15 00:19:20 +01:00
parent 02d6d05339
commit b6671787db
1 changed files with 3 additions and 0 deletions
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libavcodec/flashsv.c
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@ -126,6 +126,9 @@ static int flashsv2_prime(FlashSVContext *s, uint8_t *src, int size)
z_stream zs;
int zret; // Zlib return code
if (!src)
return AVERROR_INVALIDDATA;
zs.zalloc = NULL;
zs.zfree = NULL;
zs.opaque = NULL;