[FFmpeg-devel] [PATCH 1/4] libavformat/rtmpproto: fix rmtp packet leak in gen_connect()

[Lidong Yan]

In libavformat/rtmpproto.c:gen_connect(), if check on string length
or check on codec fourcc failed, ff_rtmp_packet_create() allocated
data in pkt would leak. Add ff_rtmp_packet_destory before return error
code.

Signed-off-by: Lidong Yan <502024330056 at smail.nju.edu.cn>
---
 libavformat/rtmpproto.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavformat/rtmpproto.c b/libavformat/rtmpproto.c
index 846376e668..dd850f72ed 100644
--- a/libavformat/rtmpproto.c
+++ b/libavformat/rtmpproto.c
@@ -347,6 +347,7 @@ static int gen_connect(URLContext *s, RTMPContext *rt)
         if ((fourcc_str_len + 1) % 5 != 0) {
             av_log(s, AV_LOG_ERROR, "Malformed rtmp_enhanched_codecs, "
                    "should be of the form hvc1[,av01][,vp09][,...]\n");
+            ff_rtmp_packet_destroy(&pkt);
             return AVERROR(EINVAL);
         }
 
@@ -370,6 +371,7 @@ static int gen_connect(URLContext *s, RTMPContext *rt)
                     ff_amf_write_string(&p, fourcc);
             } else {
                     av_log(s, AV_LOG_ERROR, "Unsupported codec fourcc, %.*s\n", 4, fourcc_data);
+                    ff_rtmp_packet_destroy(&pkt);
                     return AVERROR_PATCHWELCOME;
             }
 
-- 
2.50.0-rc1