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[USN-8444-1] Graphite vulnerability

Posted on 17 June 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-8444-1
June 17, 2026

graphite2 vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 26.04 LTS
- Ubuntu 25.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS

Summary:

graphite2 could be made to crash or run programs if it opened a specially
crafted file.

Software Description:
- graphite2: Font rendering engine for Complex Scripts

Details:

It was discovered that Graphite incorrectly handled memory when running
certain actions. An attacker could use this issue to cause Graphite to
crash, resulting in a denial of service, or possibly execute arbitrary
code.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 26.04 LTS
libgraphite2-3 1.3.14-11ubuntu1.1

Ubuntu 25.10
libgraphite2-3 1.3.14-2ubuntu1.3

Ubuntu 24.04 LTS
libgraphite2-3 1.3.14-2ubuntu0.24.04.1

Ubuntu 22.04 LTS
libgraphite2-3 1.3.14-1ubuntu0.1

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-8444-1
CVE-2026-50593

Package Information:
https://launchpad.net/ubuntu/+source/graphite2/1.3.14-11ubuntu1.1
https://launchpad.net/ubuntu/+source/graphite2/1.3.14-2ubuntu1.3
https://launchpad.net/ubuntu/+source/graphite2/1.3.14-2ubuntu0.24.04.1
https://launchpad.net/ubuntu/+source/graphite2/1.3.14-1ubuntu0.1

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