CVE-2018-8043: Null Pointer Dereference
Last updated 4 July 2026
Other sources
The unimacmdioprobe function in drivers/net/phy/mdio-bcm-unimac.c in the Linux kernel through 4.15.8 does not validate certain resource availability, which allows local users to cause a denial of service (NULL pointer dereference).
— Launchpad
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 7.1.8-1Fixed in 7.1.8-2
Event History
Frequently Asked Questions
What is CVE-2018-8043?
CVE-2018-8043 is a vulnerability in the Linux kernel that allows local users to cause a denial of service.
How does CVE-2018-8043 affect the Linux kernel?
CVE-2018-8043 affects the Linux kernel versions through 4.15.8.
What is the severity of CVE-2018-8043?
The severity of CVE-2018-8043 is not specified.
How can I fix CVE-2018-8043?
To fix CVE-2018-8043, update the Linux kernel to version 4.16 or higher.
Where can I find more information about CVE-2018-8043?
You can find more information about CVE-2018-8043 on the official Ubuntu website and the official Linux kernel repository.