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CVE-2014-5045

6.2 · MEDIUM

The mountpoint_last function in fs/namei.c in the Linux kernel before 3.15.8 does not properly maintain a certain reference count during attempts to use the umount system call in conjunction with a…

Published Aug 1, 2014linuxCWE-59EPSS 0.49%

Overview

CVE-2014-5045 is a medium-severity vulnerability affecting linux linux_kernel. It was published on August 1, 2014 and has a CVSS 2.0 base score of 6.2 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 6.2, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

The mountpoint_last function in fs/namei.c in the Linux kernel before 3.15.8 does not properly maintain a certain reference count during attempts to use the umount system call in conjunction with a symlink, which allows local users to cause a denial of service (memory consumption or use-after-free) or possibly have unspecified other impact via the umount program.

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>= 0, < 3.15.8Affected

References

Refgit.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=295dc39d941dc2ae53d5c170365af4c9d5c16212Refrhn.redhat.com/errata/RHSA-2015-0062.htmlRefsecunia.com/advisories/60353Refwww.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.15.8Refwww.openwall.com/lists/oss-security/2014/07/24/2Refwww.securityfocus.com/bid/68862Refbugzilla.redhat.com/show_bug.cgi?id=1122472GitHubgithub.com/torvalds/linux/commit/295dc39d941dc2ae53d5c170365af4c9d5c16212Refgit.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=295dc39d941dc2ae53d5c170365af4c9d5c16212Refrhn.redhat.com/errata/RHSA-2015-0062.html

How CyberStrike helps

Frequently asked questions

What is CVE-2014-5045?

CVE-2014-5045 is a medium-severity vulnerability affecting linux linux_kernel. It was published on August 1, 2014 and has a CVSS 2.0 base score of 6.2 (MEDIUM).

How severe is CVE-2014-5045?

This vulnerability has a CVSS 2.0 base score of 6.2, 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-2014-5045?

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-2014-5045?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2014-5045 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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