Important: glib2 security and bug fix update

glib2-doc Updated 02 Oct 2025

Summary

01/06/2021

Disclosed on

N/A

Severity

Yes i

Fix available

Unrated

Severity

Not published

CVSS Score

ALSA-2021:2170: Important: glib2 security and bug fix update. Affects glib2-doc versions < 2.56.4-10.el8_4. Fixed in 2.56.4-10.el8_4. How to fix ↓

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Background

GLib provides the core application building blocks for libraries and applications written in C. It serves as the core object system used in GNOME, implements the main loop, and offers a wide range of utility functions for strings and common data structures.

Vulnerability Detail

The glib2 package is affected by an integer overflow vulnerability (CVE-2021-27219) in the g_bytes_new function on 64-bit platforms. This vulnerability occurs due to an implicit cast from 64 bits to 32 bits, leading to an overflow. The impact of this vulnerability includes potential crashes and slow workarounds.

How To Fix

Minimum fixed version

2.56.4-10.el8_4

This is the first release that contains the fix.

sudo dnf update glib2-doc

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Workaround

There is no specific workaround mentioned for this vulnerability.

Conclusion

The glib2 package is affected by an integer overflow vulnerability (CVE-2021-27219) on 64-bit platforms. It is recommended to update the package to version 2.56.4-10.el8_4 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.

See every vulnerability recorded for glib2-doc →