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CVE-2014-9090

4.9 · MEDIUM

The do_double_fault function in arch/x86/kernel/traps.c in the Linux kernel through 3.17.4 does not properly handle faults associated with the Stack Segment (SS) segment register, which allows loca…

Published Nov 30, 2014linuxCWE-17EPSS 0.38%

Overview

CVE-2014-9090 is a medium-severity vulnerability affecting linux linux_kernel. It was published on November 30, 2014 and has a CVSS 2.0 base score of 4.9 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 4.9, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

The do_double_fault function in arch/x86/kernel/traps.c in the Linux kernel through 3.17.4 does not properly handle faults associated with the Stack Segment (SS) segment register, which allows local users to cause a denial of service (panic) via a modify_ldt system call, as demonstrated by sigreturn_32 in the linux-clock-tests test suite.

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_kernel0Affected

References

Refgit.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=6f442be2fb22be02cafa606f1769fa1e6f894441Reflists.opensuse.org/opensuse-security-announce/2015-03/msg00025.htmlReflists.opensuse.org/opensuse-security-announce/2015-04/msg00015.htmlReflists.opensuse.org/opensuse-security-announce/2015-04/msg00020.htmlRefsecunia.com/advisories/62336Refwww.debian.org/security/2014/dsa-3093Refwww.openwall.com/lists/oss-security/2014/11/26/5GitHubgithub.com/torvalds/linux/commit/6f442be2fb22be02cafa606f1769fa1e6f894441Refgit.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=6f442be2fb22be02cafa606f1769fa1e6f894441Reflists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html

How CyberStrike helps

Frequently asked questions

What is CVE-2014-9090?

CVE-2014-9090 is a medium-severity vulnerability affecting linux linux_kernel. It was published on November 30, 2014 and has a CVSS 2.0 base score of 4.9 (MEDIUM).

How severe is CVE-2014-9090?

This vulnerability has a CVSS 2.0 base score of 4.9, rated MEDIUM. 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-2014-9090?

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-2014-9090?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2014-9090 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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