CVE-2018-14619

Name: CVE-2018-14619
Creator: NVD / NIST
Published: 2018-08-30T12:29:01.407+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.43%

Last modified Jun 17, 2026

CVE-2018-14619 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A flaw was found in the crypto subsystem of the Linux kernel before version kernel-4.15-rc4. The "null skcipher" was being dropped when each af_alg_ctx was freed instead of when the aead_tfm was freed. EPSS estimates a 0.43% chance of exploitation in the next 30 days.

Description

A flaw was found in the crypto subsystem of the Linux kernel before version kernel-4.15-rc4. The "null skcipher" was being dropped when each af_alg_ctx was freed instead of when the aead_tfm was freed. This can cause the null skcipher to be freed while it is still in use leading to a local user being able to crash the system or possibly escalate privileges.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.43%

34.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions	Update
Linux	Linux Kernel	>= 4.14, < 4.14.8	—
Linux	Linux Kernel	4.15	Rc1

References

http://www.securityfocus.com/bid/105200Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2018:2948Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14619Issue Tracking, Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b32a7dc8aef1882fbf983eb354837488cc9d54dcPatch, Vendor Advisory
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0013Third Party Advisory
http://www.securityfocus.com/bid/105200Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2018:2948Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14619Issue Tracking, Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b32a7dc8aef1882fbf983eb354837488cc9d54dcPatch, Vendor Advisory
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0013Third Party Advisory

Timeline

Published: Aug 30, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-14619?

How severe is CVE-2018-14619?

CVE-2018-14619 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.43% probability of exploitation in the next 30 days.

How do I fix CVE-2018-14619?

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-2018-14619?

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

Scan your code now

Source: NVD / NIST