CVE-2019-19462: Null Pointer Dereference
Last updated 14 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
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 5.10.223-1Fixed in 5.10.262-1Fixed in 6.1.176-1Fixed in 6.1.180-1Fixed in 6.12.94-1Fixed in 6.12.101-1Fixed in 7.1.7-1Fixed in 7.1.8-1 - Upgrade
Upgrade
Linux kernel (kernel/relay.c)to a version that resolves this vulnerability.Fixed in 5.4.1
Event History
Frequently Asked Questions
What is the severity of CVE-2019-19462?
The severity of CVE-2019-19462 is categorized as a denial of service vulnerability.
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.
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.
Can this vulnerability be exploited by local users?
Yes, CVE-2019-19462 can be exploited by local users to cause a denial of service.
What is the consequence of exploiting CVE-2019-19462?
Exploiting CVE-2019-19462 can lead to relay blockage and denial of service.