CVE-2018-6799 Memory corruption in n/a

What is CVE-2018-6799?

CVE-2018-6799 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 7 Feb 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 AcquireCacheNexus function in magick/pixel_cache.c in GraphicsMagick before 1.3.28 allows remote attackers to cause a denial of service (heap overwrite) or possibly have unspecified other impact via a crafted image file, because a pixel staging area is not used.

Weakness: CWE-119

Which versions are affected by CVE-2018-6799?

It affects 2 products.

Products include Debian Debian Linux, Graphicsmagick Graphicsmagick.

How do I fix CVE-2018-6799?

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-2018-6799 being exploited?

There is no known exploitation of CVE-2018-6799 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 DEBIAN-CVE-2018-6799, DLA-1282-1, GHSA-gvph-frf8-8jrv, UBUNTU-CVE-2018-6799.