USN-4759-1: GLib vulnerabilities

Releases

• Ubuntu 20.10
• Ubuntu 20.04 LTS
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM

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)

Update instructions

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

Ubuntu 20.10

• libglib2.0-0 - 2.66.1-2ubuntu0.1

Ubuntu 20.04

• libglib2.0-0 - 2.64.6-1~ubuntu20.04.2

Ubuntu 18.04

• libglib2.0-0 - 2.56.4-0ubuntu0.18.04.7

Ubuntu 16.04

• libglib2.0-0 - 2.48.2-0ubuntu4.7

After a standard system update you need to restart your session to make all
the necessary changes.

References

• CVE-2021-27218
• CVE-2021-27219