From: Yang Xiao <ysha...@outlook.com>
This commit fixed a crash when seeking wma frames, asf decoder will try to
demux in function asf_read_pts().
Pointer member side_data of AVPacket that allocated by stack may be wild
pointer.
Prevent releasing wild pointers in AVPacket when some functions try to call
av_packet_unref, example av_read_frame().
---
libavformat/asfdec_f.c | 2 +-
libavformat/mpc.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/libavformat/asfdec_f.c b/libavformat/asfdec_f.c
index a8f36ed286..bae0ecfc7c 100644
--- a/libavformat/asfdec_f.c
+++ b/libavformat/asfdec_f.c
@@ -1433,7 +1433,7 @@ static int64_t asf_read_pts(AVFormatContext *s, int
stream_index,
{
FFFormatContext *const si = ffformatcontext(s);
ASFContext *asf = s->priv_data;
- AVPacket pkt1, *pkt = &pkt1;
+ AVPacket pkt1 = {0}, *pkt = &pkt1;
ASFStream *asf_st;
int64_t pts;
int64_t pos = *ppos;
diff --git a/libavformat/mpc.c b/libavformat/mpc.c
index b5b2bab33c..ad0d693152 100644
--- a/libavformat/mpc.c
+++ b/libavformat/mpc.c
@@ -189,7 +189,7 @@ static int mpc_read_seek(AVFormatContext *s, int
stream_index, int64_t timestamp
AVStream *st = s->streams[stream_index];
FFStream *const sti = ffstream(st);
MPCContext *c = s->priv_data;
- AVPacket pkt1, *pkt = &pkt1;
+ AVPacket pkt1 = {0}, *pkt = &pkt1;
int ret;
int index = av_index_search_timestamp(st, FFMAX(timestamp - DELAY_FRAMES,
0), flags);
uint32_t lastframe;
--
2.30.1 (Apple Git-130)
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