CVE-2018-6358 Memory corruption in n/a

What is CVE-2018-6358?

CVE-2018-6358 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 27 Jan 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

The printDefineFont2 function (util/listfdb.c) in libming through 0.4.8 is vulnerable to a heap-based buffer overflow, which may allow attackers to cause a denial of service or unspecified other impact via a crafted FDB file.

Weakness: CWE-787

Which versions are affected by CVE-2018-6358?

It affects 2 products.

Products include Debian Debian Linux, Libming Libming.

How do I fix CVE-2018-6358?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2018-6358 being exploited?

There is no known exploitation of CVE-2018-6358 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

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

Also known as GHSA-67f2-hqc8-f72w, UBUNTU-CVE-2018-6358.