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avpriv_mpeg4audio_get_config: check init_get_bits() return code.

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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 2013-01-27 21:17:32 +01:00
parent 96f452ac64
commit deefdf9788
1 changed files with 1 additions and 3 deletions
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4
libavcodec/mpeg4audio.c
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@ -84,10 +84,8 @@ int avpriv_mpeg4audio_get_config(MPEG4AudioConfig *c, const uint8_t *buf,
GetBitContext gb;
int specific_config_bitindex;
if(bit_size<=0)
if (bit_size <= 0 || init_get_bits(&gb, buf, bit_size) < 0)
return AVERROR_INVALIDDATA;
init_get_bits(&gb, buf, bit_size);
c->object_type = get_object_type(&gb);
c->sample_rate = get_sample_rate(&gb, &c->sampling_index);
c->chan_config = get_bits(&gb, 4);