Vulnerability record · CVE-2019-20054 · published 28 December 2019

CVE-2019-20054: Linux kernel null pointer dereference vulnerability

Linux · Linux Kernel

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.

5.5 CVSS 3.1 Medium EPSS 0.48% · top 61.0% CWE-476 · NULL pointer dereference

5.5CVSS 3.1 base score, v2 4.9

0.48%EPSS exploitation probability, 30 days

NoNot in CISA KEV

13Affected product versions listed by NVD

12References

17 Jun 2026Last modified by NVD

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.

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

Affected products

13 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Linux Kernel Linux N8300 Firmware Netapp N8700 Firmware Netapp NA400 Firmware Netapp NActive Iq Unified Manager Netapp NCloud Backup Netapp NData Availability Services Netapp NE Series Santricity Os Controller Netapp NFas\/Aff Baseboard Management Controller Netapp NH610s Firmware Netapp NSolidfire \& Hci Management Node Netapp NSolidfire Baseboard Management Controller Netapp NSteelstore Cloud Integrated Storage Netapp

References

Link	Tags
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html	Broken LinkThird Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.11	Release NotesVendor Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.6	Release NotesVendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=23da9588037ecdd4901db76a5b79a42b529c4ec3	PatchVendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=89189557b47b35683a27c80ee78aef18248eefb4	PatchVendor Advisory
https://security.netapp.com/advisory/ntap-20200204-0002/	Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html	Broken LinkThird Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.11	Release NotesVendor Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.6	Release NotesVendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=23da9588037ecdd4901db76a5b79a42b529c4ec3	PatchVendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=89189557b47b35683a27c80ee78aef18248eefb4	PatchVendor Advisory
https://security.netapp.com/advisory/ntap-20200204-0002/	Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2019-20054), CISA KEV, FIRST EPSS (scores of 2026-10-03). This page is refreshed as NVD updates the record.