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CVE-2018-16862

5.3 · MEDIUM

A security flaw was found in the Linux kernel in a way that the cleancache subsystem clears an inode after the final file truncation (removal).

Published Nov 26, 2018CWE-200EPSS 0.53%

Overview

CVE-2018-16862 is a medium-severity vulnerability. It was published on November 26, 2018 and has a CVSS 3.0 base score of 5.3 (MEDIUM).

This vulnerability has a CVSS 3.0 base score of 5.3, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

A security flaw was found in the Linux kernel in a way that the cleancache subsystem clears an inode after the final file truncation (removal). The new file created with the same inode may contain leftover pages from cleancache and the old file data instead of the new one.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. 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.

References

Refwww.securityfocus.com/bid/106009Refbugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16862Reflists.debian.org/debian-lts-announce/2019/03/msg00017.htmlReflists.debian.org/debian-lts-announce/2019/03/msg00034.htmlReflists.debian.org/debian-lts-announce/2019/04/msg00004.htmlReflore.kernel.org/patchwork/patch/1011367/Refseclists.org/oss-sec/2018/q4/169Refusn.ubuntu.com/3879-1/Refusn.ubuntu.com/3879-2/Refusn.ubuntu.com/4094-1/

How CyberStrike helps

Frequently asked questions

What is CVE-2018-16862?

CVE-2018-16862 is a medium-severity vulnerability. It was published on November 26, 2018 and has a CVSS 3.0 base score of 5.3 (MEDIUM).

How severe is CVE-2018-16862?

This vulnerability has a CVSS 3.0 base score of 5.3, 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-2018-16862?

Check the references section for vendor advisories, patches, and mitigation guidance. 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-2018-16862?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2018-16862 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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