CVE-2018-8043 Null dereference in n/a

What is CVE-2018-8043?

CVE-2018-8043 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 10 Mar 2018. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The unimac_mdio_probe 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).

Weakness: CWE-476

Which versions are affected by CVE-2018-8043?

It affects 2 products.

Products include Canonical Ubuntu Linux, Linux kernel.

How do I fix CVE-2018-8043?

Apply the vendor's patch.

Is CVE-2018-8043 being exploited?

There is no known exploitation of CVE-2018-8043 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2018-8043, GHSA-74vr-h68j-rmh2, UBUNTU-CVE-2018-8043, USN-3630-2.