Date: Wed, 20 Jun 2012 14:15:14 +0000 (UTC) From: "Alexander V. Chernikov" <melifaro@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org Subject: svn commit: r237309 - stable/8/sys/netinet/ipfw Message-ID: <201206201415.q5KEFEan046872@svn.freebsd.org>
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Author: melifaro Date: Wed Jun 20 14:15:14 2012 New Revision: 237309 URL: http://svn.freebsd.org/changeset/base/237309 Log: MFC r236819 Validate IPv4 network mask being passed to ipfw kernel interface. Incorrect mask can possibly be one of the reasons for kern/127209 existance. Approved by: ae(mentor) Modified: stable/8/sys/netinet/ipfw/ip_fw_table.c Directory Properties: stable/8/sys/ (props changed) Modified: stable/8/sys/netinet/ipfw/ip_fw_table.c ============================================================================== --- stable/8/sys/netinet/ipfw/ip_fw_table.c Wed Jun 20 14:14:27 2012 (r237308) +++ stable/8/sys/netinet/ipfw/ip_fw_table.c Wed Jun 20 14:15:14 2012 (r237309) @@ -153,6 +153,9 @@ ipfw_add_table_entry(struct ip_fw_chain case IPFW_TABLE_CIDR: if (plen == sizeof(in_addr_t)) { #ifdef INET + /* IPv4 case */ + if (mlen > 32) + return (EINVAL); ent = malloc(sizeof(*ent), M_IPFW_TBL, M_WAITOK | M_ZERO); ent->value = value; /* Set 'total' structure length */
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