CVE-2014-0203 Use after free in n/a

What is CVE-2014-0203?

CVE-2014-0203 is a medium-severity use after free vulnerability in Linux kernel, published on 23 Jun 2014. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The __do_follow_link function in fs/namei.c in the Linux kernel before 2.6.33 does not properly handle the last pathname component during use of certain filesystems, which allows local users to cause a denial of service (incorrect free operations and system crash) via an open system call.

Weakness: CWE-416

Which versions are affected by CVE-2014-0203?

It affects 2 products.

Products include Linux kernel, Oracle Linux.

How do I fix CVE-2014-0203?

Apply the vendor's patch.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2014-0203 being exploited?

There is no known exploitation of CVE-2014-0203 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

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

Also known as DEBIAN-CVE-2014-0203, GHSA-48m7-cf7p-jqm7.