[Bug 208007] [patch] Int overflow in dhclient(1)

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Tue Mar 15 06:29:03 UTC 2016


https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=208007

            Bug ID: 208007
           Summary: [patch] Int overflow in dhclient(1)
           Product: Base System
           Version: 11.0-CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Keywords: patch
          Severity: Affects Only Me
          Priority: ---
         Component: bin
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: hiren at FreeBSD.org
          Keywords: patch

Date: Mon, 14 Mar 2016 21:55:42 -0400
From: Michael McConville <mmcco at mykolab.com>
To: freebsd-net at freebsd.org
Subject: Int overflow in dhclient(1)


I sent this a few weeks ago, but it never got applied:

https://marc.info/?l=freebsd-net&m=145392057613453&w=2

Here's my explanation for the same fix in OpenBSD:

https://marc.info/?l=openbsd-tech&m=145377854103866&w=2

Thanks for your time,
Michael


Index: sbin/dhclient/dhclient.c
===================================================================
--- sbin/dhclient/dhclient.c    (revision 296886)
+++ sbin/dhclient/dhclient.c    (working copy)
@@ -138,7 +138,7 @@
 findproto(char *cp, int n)
 {
        struct sockaddr *sa;
-       int i;
+       unsigned int i;

        if (n == 0)
                return -1;

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