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CVE-2014-8173

7.2 · HIGH

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) e…

Published Mar 16, 2015linuxEPSS 0.40%

Overview

CVE-2014-8173 is a high-severity vulnerability affecting linux linux_kernel. It was published on March 16, 2015 and has a CVSS 2.0 base score of 7.2 (HIGH).

This vulnerability has a CVSS 2.0 base score of 7.2, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
linuxlinux_kernel>= 3.9, < 3.10.76Affected

References

Refgit.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ee53664bda169f519ce3c6a22d378f0b946c8178Reflists.opensuse.org/opensuse-security-announce/2015-04/msg00009.htmlRefrhn.redhat.com/errata/RHSA-2015-0290.htmlRefrhn.redhat.com/errata/RHSA-2015-0694.htmlRefbugzilla.redhat.com/show_bug.cgi?id=1198457GitHubgithub.com/torvalds/linux/commit/ee53664bda169f519ce3c6a22d378f0b946c8178Refgit.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ee53664bda169f519ce3c6a22d378f0b946c8178Reflists.opensuse.org/opensuse-security-announce/2015-04/msg00009.htmlRefrhn.redhat.com/errata/RHSA-2015-0290.htmlRefrhn.redhat.com/errata/RHSA-2015-0694.html

How CyberStrike helps

Frequently asked questions

What is CVE-2014-8173?

CVE-2014-8173 is a high-severity vulnerability affecting linux linux_kernel. It was published on March 16, 2015 and has a CVSS 2.0 base score of 7.2 (HIGH).

How severe is CVE-2014-8173?

This vulnerability has a CVSS 2.0 base score of 7.2, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2014-8173?

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2014-8173?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2014-8173 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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