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avcodec/msmpeg4dec: initialize dir_ptr in error cases

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Fixes use of uinitialized memory
Fixes: msan_uninit-mem_7f01b8799186_7278_msnaudio.asf
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-12-15 13:22:57 +01:00
parent 81230e2612
commit 61edda9a4a
1 changed files with 2 additions and 0 deletions
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2
libavcodec/msmpeg4dec.c
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@ -588,6 +588,7 @@ static int msmpeg4_decode_dc(MpegEncContext * s, int n, int *dir_ptr)
}
if (level < 0) {
av_log(s->avctx, AV_LOG_ERROR, "illegal dc vlc\n");
*dir_ptr = 0;
return -1;
}
level-=256;
@ -599,6 +600,7 @@ static int msmpeg4_decode_dc(MpegEncContext * s, int n, int *dir_ptr)
}
if (level < 0){
av_log(s->avctx, AV_LOG_ERROR, "illegal dc vlc\n");
*dir_ptr = 0;
return -1;
}