See patch.
--
fenrir
>From 1b8b4e2bee998dcc65e24cb1cc94879bdc8845ed Mon Sep 17 00:00:00 2001
From: Laurent Aimar <[email protected]>
Date: Wed, 7 Sep 2011 23:12:32 +0200
Subject: [PATCH] Fixed invalid access in wavpack decoder on corrupted extra bits sub-blocks.
---
libavcodec/wavpack.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/libavcodec/wavpack.c b/libavcodec/wavpack.c
index f43819c..f6d30b0 100644
--- a/libavcodec/wavpack.c
+++ b/libavcodec/wavpack.c
@@ -400,7 +400,7 @@ static inline int wv_get_value_integer(WavpackFrameContext *s, uint32_t *crc, in
if(s->extra_bits){
S <<= s->extra_bits;
- if(s->got_extra_bits){
+ if(s->got_extra_bits && get_bits_left(&s->gb_extra_bits) >= s->extra_bits){
S |= get_bits(&s->gb_extra_bits, s->extra_bits);
*crc = *crc * 9 + (S&0xffff) * 3 + ((unsigned)S>>16);
}
--
1.7.2.5
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