[FFmpeg-cvslog] avformat/rmdec: Do not pass mime type in rm_read_multi() to ff_rm_read_mdpr_codecdata()

[Michael Niedermayer]

ffmpeg | branch: release/4.0 | Michael Niedermayer <michael at niedermayer.cc> | Tue Jul  3 21:37:46 2018 +0200| [37f505cc853f592d93b6285c8a91eece2e5b8b07] | committer: Michael Niedermayer

avformat/rmdec: Do not pass mime type in rm_read_multi() to ff_rm_read_mdpr_codecdata()

Fixes: use after free()
Fixes: rmdec-crash-ffe85b4cab1597d1cfea6955705e53f1f5c8a362

Found-by: Paul Ch <paulcher at icloud.com>
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit a7e032a277452366771951e29fd0bf2bd5c029f0)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=37f505cc853f592d93b6285c8a91eece2e5b8b07
---

 libavformat/rmdec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavformat/rmdec.c b/libavformat/rmdec.c
index ac61723c66..0216003e88 100644
--- a/libavformat/rmdec.c
+++ b/libavformat/rmdec.c
@@ -522,7 +522,7 @@ static int rm_read_multi(AVFormatContext *s, AVIOContext *pb,
 
         size2 = avio_rb32(pb);
         ret = ff_rm_read_mdpr_codecdata(s, s->pb, st2, st2->priv_data,
-                                        size2, mime);
+                                        size2, NULL);
         if (ret < 0)
             return ret;
     }