CVE-2020-14390 Memory corruption in kernel
An out-of-bounds memory write in the Linux kernel during screen size changes can cause denial of service or potential privilege escalation.
- 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-2020-14390?
CVE-2020-14390 is a medium-severity memory corruption vulnerability in Debian Debian Linux, published on 18 Sep 2020. 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 kernel in versions before 5.9-rc6. When changing screen size, an out-of-bounds memory write can occur leading to memory corruption or a denial of service. Due to the nature of the flaw, privilege escalation cannot be fully ruled out.
Weakness: CWE-787
Which versions are affected by CVE-2020-14390?
It affects 2 products.
Products include Debian Debian Linux, Linux kernel.
How do I fix CVE-2020-14390?
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-2020-14390 being exploited?
There is no known exploitation of CVE-2020-14390 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2020-14390, GHSA-h8pg-xg8h-5pgp, UBUNTU-CVE-2020-14390.