CVE-2018-1068 Memory corruption in Linux Kernel
A privileged user can exploit a flaw in the Linux kernel's 32-bit bridging syscall to write to kernel memory, potentially escalating privileges or executing code.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2018-1068?
CVE-2018-1068 is a medium-severity memory corruption vulnerability in Canonical Ubuntu Linux, published on 16 Mar 2018. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A flaw was found in the Linux 4.x kernel's implementation of 32-bit syscall interface for bridging. This allowed a privileged user to arbitrarily write to a limited range of kernel memory.
Which versions are affected by CVE-2018-1068?
It affects 10 products.
Products include Canonical Ubuntu Linux, Debian Debian Linux, Linux kernel, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server Aus and 4 more.
How do I fix CVE-2018-1068?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2018-1068 being exploited?
There is no known exploitation of CVE-2018-1068 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as DEBIAN-CVE-2018-1068, GHSA-xfrv-5h7j-4qvx, UBUNTU-CVE-2018-1068.