[FFmpeg-cvslog] libavformat/mov.c: Free aes_decrypt to avoid leaking memory

[John Rummell]

ffmpeg | branch: master | John Rummell <jrummell at chromium.org> | Mon Mar 30 14:08:01 2020 -0700| [ad91cf1f2f5793db5c6dd7ab9947fcc6d7832607] | committer: Michael Niedermayer

libavformat/mov.c: Free aes_decrypt to avoid leaking memory

Found by Chromium fuzzers (crbug.com/1057205).

Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ad91cf1f2f5793db5c6dd7ab9947fcc6d7832607
---

 libavformat/mov.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libavformat/mov.c b/libavformat/mov.c
index f280f360b6..f01502a5f8 100644
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@@ -1005,6 +1005,7 @@ static int mov_read_adrm(MOVContext *c, AVIOContext *pb, MOVAtom atom)
     sha = av_sha_alloc();
     if (!sha)
         return AVERROR(ENOMEM);
+    av_free(c->aes_decrypt);
     c->aes_decrypt = av_aes_alloc();
     if (!c->aes_decrypt) {
         ret = AVERROR(ENOMEM);