From: David Vossel <dvossel@digium.com>
Date: Thu, 7 Jan 2010 20:14:25 +0000 (+0000)
Subject: fixes crash in "scheduled_destroy" in chan_iax
X-Git-Tag: 1.4.29-rc1~4
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fed58bd1d611560fcf27a770ed958f7ad45b11b8;p=thirdparty%2Fasterisk.git

fixes crash in "scheduled_destroy" in chan_iax

A signed short was used to represent a callnumber.  This is makes
it possible to attempt to access the iaxs array with a negative
index.

(closes issue #16565)
Reported by: jensvb



git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@238411 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---

diff --git a/channels/chan_iax2.c b/channels/chan_iax2.c
index 7d321f45db..ac58c7703d 100644
--- a/channels/chan_iax2.c
+++ b/channels/chan_iax2.c
@@ -1507,7 +1507,7 @@ retry:
 
 static int scheduled_destroy(const void *vid)
 {
-	short callno = PTR_TO_CALLNO(vid);
+	unsigned short callno = PTR_TO_CALLNO(vid);
 	ast_mutex_lock(&iaxsl[callno]);
 	if (iaxs[callno]) {
 		if (option_debug) {