CVE-2010-4165 Information

Description

The do_tcp_setsockopt function in net/ipv4/tcp.c in the Linux kernel before 2.6.37-rc2 does not properly restrict TCP_MAXSEG (aka MSS) values which allows local users to cause a denial of service (OOPS) via a setsockopt call that specifies a small value leading to a divide-by-zero error or incorrect use of a signed integer.

Reference

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=7a1abd08d52fdeddb3e9a5a33f2f15cc6a5674d2 http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00000.html http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00001.html http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00004.html http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html http://secunia.com/advisories/42778 http://secunia.com/advisories/42801 http://secunia.com/advisories/42932 http://securityreason.com/securityalert/8111 http://securityreason.com/securityalert/8123 http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.37-rc2 http://www.mandriva.com/security/advisories?name=MDVSA-2011:029 http://www.mandriva.com/security/advisories?name=MDVSA-2011:051 http://www.openwall.com/lists/oss-security/2010/11/12/1 http://www.openwall.com/lists/oss-security/2010/11/12/4 http://www.osvdb.org/69241 http://www.securityfocus.com/bid/44830 http://www.spinics.net/lists/netdev/msg146405.html http://www.spinics.net/lists/netdev/msg146495.html http://www.vupen.com/english/advisories/2011/0012 http://www.vupen.com/english/advisories/2011/0124 http://www.vupen.com/english/advisories/2011/0298 https://bugzilla.redhat.com/show_bug.cgi?id=652508