From: Martin Storsjö <martin@martin.st>
Date: Wed, 31 Jul 2013 09:45:33 +0000 (+0300)
Subject: rtpproto: Check the size before reading buf[1]
X-Git-Tag: v10_alpha1~1056
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1851e1d05d06f6ef3436c667e4354da0f407b226;p=platform%2Fupstream%2Flibav.git

rtpproto: Check the size before reading buf[1]

I doubt that anyone ever would try to send a 1 byte packet
via the RTP protocol, but check just in case - it shouldn't
crash at least.

Signed-off-by: Martin Storsjö <martin@martin.st>
---

diff --git a/libavformat/rtpproto.c b/libavformat/rtpproto.c
index 4e177b9..b21c121 100644
--- a/libavformat/rtpproto.c
+++ b/libavformat/rtpproto.c
@@ -368,6 +368,9 @@ static int rtp_write(URLContext *h, const uint8_t *buf, int size)
     int ret;
     URLContext *hd;
 
+    if (size < 2)
+        return AVERROR(EINVAL);
+
     if (RTP_PT_IS_RTCP(buf[1])) {
         /* RTCP payload type */
         hd = s->rtcp_hd;