CVE-2011-1747 Information

Description

The agp subsystem in the Linux kernel 2.6.38.5 and earlier does not properly restrict memory allocation by the (1) AGPIOC_RESERVE and (2) AGPIOC_ALLOCATE ioctls which allows local users to cause a denial of service (memory consumption) by making many calls to these ioctls.

Reference

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b522f02184b413955f3bc952e3776ce41edc6355 http://openwall.com/lists/oss-security/2011/04/21/4 http://openwall.com/lists/oss-security/2011/04/22/10 http://openwall.com/lists/oss-security/2011/04/22/11 http://openwall.com/lists/oss-security/2011/04/22/7 http://openwall.com/lists/oss-security/2011/04/22/8 http://openwall.com/lists/oss-security/2011/04/22/9 http://securitytracker.com/id?1025441 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.38.5 http://www.securityfocus.com/bid/47832 https://bugzilla.redhat.com/show_bug.cgi?id=698999 https://lkml.org/lkml/2011/4/14/294