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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Important: glib2 security update
Advisory ID:       RHSA-2021:2173-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2021:2173
Issue date:        2021-06-01
CVE Names:         CVE-2021-27219 
=====================================================================

1. Summary:

An update for glib2 is now available for Red Hat Enterprise Linux 7.3
Advanced Update Support.

Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Server AUS (v. 7.3) - x86_64
Red Hat Enterprise Linux Server Optional AUS (v. 7.3) - noarch, x86_64

3. Description:

GLib provides the core application building blocks for libraries and
applications written in C. It provides the core object system used in
GNOME, the main loop implementation, and a large set of utility functions
for strings and common data structures.

Security Fix(es):

* glib: integer overflow in g_bytes_new function on 64-bit platforms due to
an implicit cast from 64 bits to 32 bits (CVE-2021-27219)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1929858 - CVE-2021-27219 glib: integer overflow in g_bytes_new function on
 64-bit platforms due to an implicit cast from 64 bits to 32 bits

6. Package List:

Red Hat Enterprise Linux Server AUS (v. 7.3):

Source:
glib2-2.46.2-5.el7_3.src.rpm

x86_64:
glib2-2.46.2-5.el7_3.i686.rpm
glib2-2.46.2-5.el7_3.x86_64.rpm
glib2-debuginfo-2.46.2-5.el7_3.i686.rpm
glib2-debuginfo-2.46.2-5.el7_3.x86_64.rpm
glib2-devel-2.46.2-5.el7_3.i686.rpm
glib2-devel-2.46.2-5.el7_3.x86_64.rpm

Red Hat Enterprise Linux Server Optional AUS (v. 7.3):

noarch:
glib2-doc-2.46.2-5.el7_3.noarch.rpm

x86_64:
glib2-debuginfo-2.46.2-5.el7_3.x86_64.rpm
glib2-fam-2.46.2-5.el7_3.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2021-27219
https://access.redhat.com/security/updates/classification/#important

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2021 Red Hat, Inc.
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