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CVE-2018-13406

7.8 · HIGH

An integer overflow in the uvesafb_setcmap function in drivers/video/fbdev/uvesafb.c in the Linux kernel before 4.17.4 could result in local attackers being able to crash the kernel or potentially…

Published Jul 6, 2018CWE-190EPSS 0.53%

Overview

CVE-2018-13406 is a high-severity vulnerability. It was published on July 6, 2018 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

An integer overflow in the uvesafb_setcmap function in drivers/video/fbdev/uvesafb.c in the Linux kernel before 4.17.4 could result in local attackers being able to crash the kernel or potentially elevate privileges because kmalloc_array is not used.

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

Refgit.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9f645bcc566a1e9f921bdae7528a01ced5bc3713Refwww.securityfocus.com/bid/104685Refwww.securitytracker.com/id/1041355Refcdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.17.4GitHubgithub.com/torvalds/linux/commit/9f645bcc566a1e9f921bdae7528a01ced5bc3713Reflists.debian.org/debian-lts-announce/2019/03/msg00017.htmlRefusn.ubuntu.com/3752-1/Refusn.ubuntu.com/3752-2/Refusn.ubuntu.com/3752-3/Refusn.ubuntu.com/3753-1/

How CyberStrike helps

Frequently asked questions

What is CVE-2018-13406?

CVE-2018-13406 is a high-severity vulnerability. It was published on July 6, 2018 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2018-13406?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2018-13406?

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-2018-13406?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2018-13406 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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