CVE-2012-3375 Information

Description

The epoll_ctl system call in fs/eventpoll.c in the Linux kernel before 3.2.24 does not properly handle ELOOP errors in EPOLL_CTL_ADD operations which allows local users to cause a denial of service (file-descriptor consumption and system crash) via a crafted application that attempts to create a circular epoll dependency. NOTE: this vulnerability exists because of an incorrect fix for CVE-2011-1083.

Reference

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=13d518074a952d33d47c428419693f63389547e9 http://secunia.com/advisories/51164 http://ubuntu.com/usn/usn-1529-1 http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.24 http://www.openwall.com/lists/oss-security/2012/07/04/2 http://www.securitytracker.com/id?1027237 https://bugzilla.redhat.com/show_bug.cgi?id=837502 https://downloads.avaya.com/css/P8/documents/100165733 https://github.com/torvalds/linux/commit/13d518074a952d33d47c428419693f63389547e9