CVE-2016-4581 Null dereference in n/a

What is CVE-2016-4581?

CVE-2016-4581 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 23 May 2016. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

fs/pnode.c in the Linux kernel before 4.5.4 does not properly traverse a mount propagation tree in a certain case involving a slave mount, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) via a crafted series of mount system calls.

Which versions are affected by CVE-2016-4581?

It affects 3 products.

Products include Canonical Ubuntu Linux, Linux kernel, Oracle Linux.

How do I fix CVE-2016-4581?

Apply the vendor's patch.

Is CVE-2016-4581 being exploited?

There is no known exploitation of CVE-2016-4581 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-2016-4581, GHSA-m632-mj54-c945, UBUNTU-CVE-2016-4581.