** Description changed: - A NULL pointer dereference flaw was found in the way Linux kernel's - madvise MADV_WILLNEED functionality handled page table locking. An - unprivileged local user could use this flaw to crash the system. + 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. Break-Fix: 1998cc048901109a29924380b8e91bc049b32951 ee53664bda169f519ce3c6a22d378f0b946c8178
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1432805 Title: CVE-2014-8173 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1432805/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
