From: Mark Michelson <mmichelson@digium.com>
Date: Mon, 27 Jul 2009 20:54:54 +0000 (+0000)
Subject: Gracefully handle malformed RTP text packets.
X-Git-Tag: 11.0.0-beta1~4426
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=ed8ccbdb739b18ffbe426751fc084de4bfa4f2da;p=thirdparty%2Fasterisk.git

Gracefully handle malformed RTP text packets.

AST-2009-004



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@209235 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---

diff --git a/res/res_rtp_asterisk.c b/res/res_rtp_asterisk.c
index edf1d7272a..d281fa5153 100644
--- a/res/res_rtp_asterisk.c
+++ b/res/res_rtp_asterisk.c
@@ -2078,6 +2078,9 @@ static struct ast_frame *ast_rtp_read(struct ast_rtp_instance *instance, int rtc
 
 		rtp->f.subclass = AST_FORMAT_T140;
 		header_end = memchr(data, ((*data) & 0x7f), rtp->f.datalen);
+		if (header_end == NULL) {
+			return &ast_null_frame;
+		}
 		header_end++;
 
 		header_length = header_end - data;