CVE-2018-14656

Name: CVE-2018-14656
Creator: NVD / NIST
Published: 2018-10-08T22:29:00.267+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.53%

Last modified Jun 17, 2026

CVE-2018-14656 is a vulnerability of currently unknown severity. A missing address check in the callers of the show_opcodes() in the Linux kernel allows an attacker to dump the kernel memory at an arbitrary kernel address into the dmesg log.. EPSS estimates a 0.53% chance of exploitation in the next 30 days.

Description

A missing address check in the callers of the show_opcodes() in the Linux kernel allows an attacker to dump the kernel memory at an arbitrary kernel address into the dmesg log.

Metrics

EPSS Probability

0.53%

40.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions	Update
Linux	Linux Kernel	<= 4.18	—
Linux	Linux Kernel	4.19	Rc1

References

http://www.securitytracker.com/id/1041804Third Party Advisory, VDB Entry
https://bugs.chromium.org/p/project-zero/issues/detail?id=1650Issue Tracking, Patch, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14656Issue Tracking, Patch, Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=342db04ae71273322f0011384a9ed414df8bdae4Patch, Third Party Advisory
https://lore.kernel.org/lkml/20180828154901.112726-1-jannh%40google.com/T/
https://seclists.org/oss-sec/2018/q4/9Mailing List, Patch, Third Party Advisory
http://www.securitytracker.com/id/1041804Third Party Advisory, VDB Entry
https://bugs.chromium.org/p/project-zero/issues/detail?id=1650Issue Tracking, Patch, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14656Issue Tracking, Patch, Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=342db04ae71273322f0011384a9ed414df8bdae4Patch, Third Party Advisory
https://lore.kernel.org/lkml/20180828154901.112726-1-jannh%40google.com/T/
https://seclists.org/oss-sec/2018/q4/9Mailing List, Patch, Third Party Advisory

Timeline

Published: Oct 8, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-14656?

A missing address check in the callers of the show_opcodes() in the Linux kernel allows an attacker to dump the kernel memory at an arbitrary kernel address into the dmesg log.

How severe is CVE-2018-14656?

Severity scoring for CVE-2018-14656 is pending analysis. The EPSS model estimates a 0.53% probability of exploitation in the next 30 days.

How do I fix CVE-2018-14656?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-14656?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST