Date: Mon, 8 Jul 2002 02:49:18 -0700 (PDT) From: Ville-Pertti Keinonen <will@iki.fi> To: freebsd-gnats-submit@FreeBSD.org Subject: misc/40331: libalias bug causes natd crashes Message-ID: <200207080949.g689nITC069923@www.freebsd.org>
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>Number: 40331 >Category: misc >Synopsis: libalias bug causes natd crashes >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Mon Jul 08 02:50:01 PDT 2002 >Closed-Date: >Last-Modified: >Originator: Ville-Pertti Keinonen >Release: -current >Organization: >Environment: >Description: In src/lib/libalias/alias_db.c, when using NEW_IPFW, ClearFWHole doesn't check whether firewall-hole-punching is enabled and fw_clrfield may dereference a NULL-pointer. >How-To-Repeat: >Fix: I worked around the problem by compiling libalias with -DNO_FW_PUNCH to get a working natd for my own use. The correct solution is to verify either that hole-punching is enabled or that fwhole is non-negative before fw_clrfield. There may well be other places like this. I'd rather not take the time to check since this is probably code that is actively undergoing changes, anyhow. >Release-Note: >Audit-Trail: >Unformatted: To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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