CVE-2019-14203 Memory corruption in n/a

Critical 9.8 Published 31 Jul 2019 Updated 12 May 2026

A stack-based buffer overflow in the U-Boot NFS handler allows attackers to execute arbitrary code or cause a denial of service.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2019-14203?

CVE-2019-14203 is a critical memory corruption vulnerability in n/a, published on 31 Jul 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered in Das U-Boot through 2019.07. There is a stack-based buffer overflow in this nfs_handler reply helper function: nfs_mount_reply.

Weakness: CWE-787

Which versions are affected by CVE-2019-14203?

It affects 1 product.

Products include Denx U-Boot.

How do I fix CVE-2019-14203?

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-2019-14203 being exploited?

There is no known exploitation of CVE-2019-14203 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2019-14203, GHSA-jfjv-fh74-wcf5, UBUNTU-CVE-2019-14203.