[FFmpeg-devel] [PATCH 2/2] cafdec: free extradata before allocating it

[Andreas Cadhalpun]

This fixes a memleak if read_kuki_chunk is executed more than once.

Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun at googlemail.com>
---
 libavformat/cafdec.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavformat/cafdec.c b/libavformat/cafdec.c
index abbb353..cc6ed0c 100644
--- a/libavformat/cafdec.c
+++ b/libavformat/cafdec.c
@@ -134,6 +134,7 @@ static int read_kuki_chunk(AVFormatContext *s, int64_t size)
             return AVERROR_INVALIDDATA;
         }
 
+        av_freep(&st->codec->extradata);
         if (ff_alloc_extradata(st->codec, ALAC_HEADER))
             return AVERROR(ENOMEM);
 
@@ -166,6 +167,7 @@ static int read_kuki_chunk(AVFormatContext *s, int64_t size)
             avio_skip(pb, size - ALAC_NEW_KUKI);
         }
     } else {
+        av_freep(&st->codec->extradata);
         if (ff_get_extradata(st->codec, pb, size) < 0)
             return AVERROR(ENOMEM);
     }
-- 
2.1.4