CVE-2019-19462: Null Pointer Dereference
Published Nov 30, 2019
·Updated
Last updated 27 August 2026
Other sources
relayopen in kernel/relay.c in the Linux kernel through 5.4.1 allows local users to cause a denial of service (such as relay blockage) by triggering a NULL allocpercpu result.
— MITRE
Affected Software
16 affected componentsFixes available
Linux Linux kernel<=5.4.1
NetApp Active Iq Unified Manager Vmware Vsphere>=9.5
NetApp Hci Management Node
NetApp Solidfire
NetApp Hci Compute Node
NetApp Hci Storage Node
Canonical Ubuntu Linux=14.04
Canonical Ubuntu Linux=16.04
Canonical Ubuntu Linux=18.04
Canonical Ubuntu Linux=20.04
openSUSE Leap=15.1
openSUSE Leap=15.2
Debian Debian Linux=8.0
Debian Debian Linux=9.0
Debian Debian Linux=10.0
debian/linux
6.1.176-16.1.180-16.12.94-16.12.107-17.1.12-17.1.13-1
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 6.1.176-1Fixed in 6.1.180-1Fixed in 6.12.94-1Fixed in 6.12.107-1Fixed in 7.1.12-1Fixed in 7.1.13-1
Event History
Nov 30, 2019
CVE Published
via MITRE·12:57 AM
Data Sourced
via MITRE·12:57 AM
Description
Data Sourced
via NVD·01:15 AM
RemedyDescriptionSeverityWeaknessAffected Software
Sep 11, 2025
Data Sourced
via Launchpad·03:51 AM
Description
Aug 27, 2026
Data Sourced
via Ubuntu·12:20 PM
RemedyDescriptionSeverityAffected Software
Sep 6, 2026
Data Sourced
via Debian·04:34 PM
DescriptionAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2019-19462?
The severity of CVE-2019-19462 is categorized as a denial of service vulnerability.
2
How do I fix CVE-2019-19462?
To fix CVE-2019-19462, upgrade the Linux kernel to versions 5.10.223-1, 5.10.226-1, or later.
3
Which versions of the Linux kernel are affected by CVE-2019-19462?
CVE-2019-19462 affects the Linux kernel versions up to 5.4.1.
4
Can this vulnerability be exploited by local users?
Yes, CVE-2019-19462 can be exploited by local users to cause a denial of service.
5
What is the consequence of exploiting CVE-2019-19462?
Exploiting CVE-2019-19462 can lead to relay blockage and denial of service.