1. Ubuntu Security Notices
  2. USN-4759-1

USN-4759-1: GLib vulnerabilities

Publication date

8 March 2021

Overview

Several security issues were fixed in GLib.

Releases

Packages

  • glib2.0 - GLib library of C routines

Details

Krzesimir Nowak discovered that GLib incorrectly handled certain large
buffers. A remote attacker could use this issue to cause applications
linked to GLib to crash, resulting in a denial of service, or possibly
execute arbitrary code. (CVE-2021-27218)

Kevin Backhouse discovered that GLib incorrectly handled certain memory
allocations. A remote attacker could use this issue to cause applications
linked to GLib to crash, resulting in a denial of service, or possibly
execute arbitrary code. (CVE-2021-27219)

Krzesimir Nowak discovered that GLib incorrectly handled certain large
buffers. A remote attacker could use this issue to cause applications
linked to GLib to crash, resulting in a denial of service, or possibly
execute arbitrary code. (CVE-2021-27218)

Kevin Backhouse discovered that GLib incorrectly handled certain memory
allocations. A remote attacker could use this issue to cause applications
linked to GLib to crash, resulting in a denial of service, or possibly
execute arbitrary code. (CVE-2021-27219)

Update instructions

After a standard system update you need to restart your session to 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
20.10 groovy libglib2.0-0 –  2.66.1-2ubuntu0.1
20.04 focal libglib2.0-0 –  2.64.6-1~ubuntu20.04.2
18.04 bionic libglib2.0-0 –  2.56.4-0ubuntu0.18.04.7
16.04 xenial libglib2.0-0 –  2.48.2-0ubuntu4.7

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.

Get Ubuntu Pro

References

Have additional questions?

Talk to a member of the team ›