The is_gpt_valid function in fs/partitions/efi.c in the Linux kernel before 2.6.39 does not check the size of an Extensible Firmware Interface (EFI) GUID Partition Table (GPT) entry, which allows physically proximate attackers to cause a denial of service (heap-based buffer overflow and OOPS) or obtain sensitive information from kernel heap memory by connecting a crafted GPT storage device, a different vulnerability than CVE-2011-1577.
http://openwall.com/lists/oss-security/2011/05/10/4
http://rhn.redhat.com/errata/RHSA-2011-0927.html
https://bugzilla.redhat.com/show_bug.cgi?id=703026
http://securityreason.com/securityalert/8369
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39