USN-8017-1: GLib vulnerabilities

Publication date

5 February 2026

Overview

Several security issues were fixed in GLib.


Packages

  • glib2.0 - GLib library of C routines

Details

It was discovered that GLib incorrectly parsed large Base64 data. An
attacker could use this issue to cause GLib to crash, resulting in a
denial of service, or possibly execute arbitrary code. (CVE-2026-1484)

It was discovered that GLib incorrectly parsed certain treemagic files.
An attacker could use this issue to cause GLib to crash, resulting in a
denial of service, or possibly execute arbitrary code. (CVE-2026-1485)

It was discovered that GLib incorrectly handled Unicode case conversion.
An attacker could use this issue to cause GLib to crash, resulting in a
denial of service, or possibly execute arbitrary code. (CVE-2026-1489)

It was discovered that GLib incorrectly parsed large Base64 data. An
attacker could use this issue to cause GLib to crash, resulting in a
denial of service, or possibly execute arbitrary code. (CVE-2026-1484)

It was discovered that GLib incorrectly parsed certain treemagic files.
An attacker could use this issue to cause GLib to crash, resulting in a
denial of service, or possibly execute arbitrary code. (CVE-2026-1485)

It was discovered that GLib incorrectly handled Unicode case conversion.
An attacker could use this issue to cause GLib to crash, resulting in a
denial of service, or possibly execute arbitrary code. (CVE-2026-1489)

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
25.10 questing libglib2.0-0t64 –  2.86.0-2ubuntu0.3
libglib2.0-bin –  2.86.0-2ubuntu0.3
24.04 LTS noble libglib2.0-0t64 –  2.80.0-6ubuntu3.8
libglib2.0-bin –  2.80.0-6ubuntu3.8
22.04 LTS jammy libglib2.0-0 –  2.72.4-0ubuntu2.9
libglib2.0-bin –  2.72.4-0ubuntu2.9

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.


Have additional questions?

Talk to a member of the team ›