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.

7.2

CVSS

Severity: High

CVSS 2.0 •

EPSS 0.04%

Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory opensuse.org

Affected: n/a n/a

References

Link	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1198457	issue tracking
http://rhn.redhat.com/errata/RHSA-2015-0694.html	third party advisory vendor advisory
http://rhn.redhat.com/errata/RHSA-2015-0290.html	vdb entry third party advisory vendor advisory
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ee53664bda169f519ce3c6a22d378f0b946c8178	broken link
http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00009.html	third party advisory vendor advisory
https://github.com/torvalds/linux/commit/ee53664bda169f519ce3c6a22d378f0b946c8178	third party advisory

Frequently Asked Questions

What is the severity of CVE-2014-8173?: CVE-2014-8173 has been scored as a high severity vulnerability.
How to fix CVE-2014-8173?: To fix CVE-2014-8173, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2014-8173 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2014-8173 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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