CVE-2012-6657 Information

Description

The sock_setsockopt function in net/core/sock.c in the Linux kernel before 3.5.7 does not ensure that a keepalive action is associated with a stream socket which allows local users to cause a denial of service (system crash) by leveraging the ability to create a raw socket.

Reference

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=3e10986d1d698140747fcfc2761ec9cb64c1d582 http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00000.html http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html http://marc.info/?l=bugtraq&m=142722450701342&w=2 http://marc.info/?l=bugtraq&m=142722544401658&w=2 http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.5.7 http://www.openwall.com/lists/oss-security/2014/09/15/8 https://bugzilla.redhat.com/show_bug.cgi?id=1141742 https://github.com/torvalds/linux/commit/3e10986d1d698140747fcfc2761ec9cb64c1d582