From c27328e749ff3be648411765cd17362fee017341 Mon Sep 17 00:00:00 2001
From: Luca Barbato <lu_zero@gentoo.org>
Date: Thu, 9 Oct 2014 20:13:54 +0200
Subject: [PATCH] rtsp: Check for command strings without spaces

Prevent a NULL-pointer dereference.

CC: libav-stable@libav.org
---
 libavformat/rtspdec.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libavformat/rtspdec.c b/libavformat/rtspdec.c
index a14ec579d9..5442b7d251 100644
--- a/libavformat/rtspdec.c
+++ b/libavformat/rtspdec.c
@@ -360,6 +360,10 @@ static inline int parse_command_line(AVFormatContext *s, const char *line,
     RTSPState *rt = s->priv_data;
     const char *linept, *searchlinept;
     linept = strchr(line, ' ');
+
+    if (!linept)
+        return AVERROR_INVALIDDATA;
+
     if (linept - line > methodsize - 1) {
         av_log(s, AV_LOG_ERROR, "Method string too long\n");
         return AVERROR(EIO);