CVE ID:	CVE-2014-8173
Description:	The pmd_none_or_trans_huge_or_clear_bad function in include/asm- generic/pgtable.h in the Linux kernel before 3.13 on NUMA systems does not properly determine whether a Page Middle Directory (PMD) entry is a transparent huge-table entry, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted MADV_WILLNEED madvise system call that leverages the absence of a page-table lock.
Test IDs:	None available
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2014-8173 RHSA-2015:0290 http://rhn.redhat.com/errata/RHSA-2015-0290.html RHSA-2015:0694 http://rhn.redhat.com/errata/RHSA-2015-0694.html http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ee53664bda169f519ce3c6a22d378f0b946c8178 http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ee53664bda169f519ce3c6a22d378f0b946c8178 https://bugzilla.redhat.com/show_bug.cgi?id=1198457 https://bugzilla.redhat.com/show_bug.cgi?id=1198457 https://github.com/torvalds/linux/commit/ee53664bda169f519ce3c6a22d378f0b946c8178 https://github.com/torvalds/linux/commit/ee53664bda169f519ce3c6a22d378f0b946c8178 openSUSE-SU-2015:0714 http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00009.html