[USN-4759-1] GLib vulnerabilities

========================================================================== Ubuntu Security Notice USN-4759-1 March 08, 2021
glib2.0 vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 20.10 – Ubuntu 20.04 LTS – Ubuntu 18.04 LTS – Ubuntu 16.04 LTS
Summary:
Several security issues were fixed in GLib.
Software Description: – 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 LTS: libglib2.0-0 2.64.6-1~ubuntu20.04.2
Ubuntu 18.04 LTS: libglib2.0-0 2.56.4-0ubuntu0.18.04.7
Ubuntu 16.04 LTS: 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: ubuntu.com/security/notices/USN-4759-1 CVE-2021-27218, CVE-2021-27219
Package Information: launchpad.net/ubuntu/+source/glib2.0/2.66.1-2ubuntu0.1 launchpad.net/ubuntu/+source/glib2.0/2.64.6-1~ubuntu20.04.2 launchpad.net/ubuntu/+source/glib2.0/2.56.4-0ubuntu0.18.04.7 launchpad.net/ubuntu/+source/glib2.0/2.48.2-0ubuntu4.7