The agp subsystem in the Linux kernel 2.6.38.5 and earlier...

Vulnerability 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.

References

• http://openwall.com/lists/oss-security/2011/04/22/8
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=b522f02184b413955f3bc952e3776ce41edc6355
• http://securitytracker.com/id?1025441
• http://openwall.com/lists/oss-security/2011/04/22/11
• http://openwall.com/lists/oss-security/2011/04/21/4
• http://www.securityfocus.com/bid/47832
• http://openwall.com/lists/oss-security/2011/04/22/7
• https://bugzilla.redhat.com/show_bug.cgi?id=698999
• http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.38.5
• http://openwall.com/lists/oss-security/2011/04/22/9
• https://lkml.org/lkml/2011/4/14/294
• http://openwall.com/lists/oss-security/2011/04/22/10