CVE-2019-20054

Name: CVE-2019-20054
Creator: NVD / NIST
Published: 2019-12-28T05:15:11.04+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.48%

Last modified Jun 17, 2026

CVE-2019-20054 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. In the Linux kernel before 5.0.6, there is a NULL pointer dereference in drop_sysctl_table() in fs/proc/proc_sysctl.c, related to put_links, aka CID-23da9588037e.. EPSS estimates a 0.48% chance of exploitation in the next 30 days.

Description

In the Linux kernel before 5.0.6, there is a NULL pointer dereference in drop_sysctl_table() in fs/proc/proc_sysctl.c, related to put_links, aka CID-23da9588037e.

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

0.48%

37.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	< 5.0.6
Netapp	Active Iq Unified Manager	All versions
Netapp	Cloud Backup	All versions
Netapp	Data Availability Services	All versions
Netapp	E-Series Santricity Os Controller	>= 11.0, <= 11.70.2
Netapp	Fas\/Aff Baseboard Management Controller	All versions
Netapp	Solidfire \& Hci Management Node	All versions
Netapp	Steelstore Cloud Integrated Storage	All versions
Netapp	Solidfire Baseboard Management Controller	All versions
Netapp	H610s Firmware	All versions
Netapp	8300 Firmware	All versions
Netapp	8700 Firmware	All versions
Netapp	A400 Firmware	All versions

References

http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.htmlBroken Link, Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.11Release Notes, Vendor Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.6Release Notes, Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=23da9588037ecdd4901db76a5b79a42b529c4ec3Patch, Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=89189557b47b35683a27c80ee78aef18248eefb4Patch, Vendor Advisory
https://security.netapp.com/advisory/ntap-20200204-0002/Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.htmlBroken Link, Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.11Release Notes, Vendor Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.6Release Notes, Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=23da9588037ecdd4901db76a5b79a42b529c4ec3Patch, Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=89189557b47b35683a27c80ee78aef18248eefb4Patch, Vendor Advisory
https://security.netapp.com/advisory/ntap-20200204-0002/Third Party Advisory

Timeline

Published: Dec 28, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-20054?

In the Linux kernel before 5.0.6, there is a NULL pointer dereference in drop_sysctl_table() in fs/proc/proc_sysctl.c, related to put_links, aka CID-23da9588037e.

How severe is CVE-2019-20054?

CVE-2019-20054 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.48% probability of exploitation in the next 30 days.

How do I fix CVE-2019-20054?

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-2019-20054?

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

Scan your code now

Source: NVD / NIST