Alerts This Week
Warning Icon 1 535
Alerts This Week
Warning Icon 1 535

Fedora 42: Critical Buffer Overflow and Out-Of-Bounds Read in libwebsockets

fedora
Calendar Grey December 10, 2025
Dist Fedora Esm H88
Update to libwebsockets 4.3.7 addresses critical security risks, including buffer overflow and out-of-bounds read vulnerabilities.
Update to 4.3.7, enable glib event loop

Summary

This is the libwebsockets C library for lightweight websocket clients and

servers.

Update Information:

Update to 4.3.7, enable glib event loop

Topics%20covered

Topics Covered

security advisory security issue fedora buffer overflow out-of-bounds read libwebsockets

Change Log

* Mon Dec 1 2025 Peter Robinson - 4.3.7-2 - Enable glib event loop support * Sun Nov 30 2025 Peter Robinson - 4.3.7-1 - Update to 4.3.7

References


[ 1 ] Bug #2405213 - CVE-2025-11679 libwebsockets: Out-of-bounds Read in libwebsockets PNG parsing [epel-10] https://bugzilla.redhat.com/show_bug.cgi?id=2405213 [ 2 ] Bug #2405215 - CVE-2025-11679 libwebsockets: Out-of-bounds Read in libwebsockets PNG parsing [epel-9] https://bugzilla.redhat.com/show_bug.cgi?id=2405215 [ 3 ] Bug #2405217 - CVE-2025-11679 libwebsockets: Out-of-bounds Read in libwebsockets PNG parsing [fedora-42] https://bugzilla.redhat.com/show_bug.cgi?id=2405217 [ 4 ] Bug #2405247 - CVE-2025-11677 libwebsockets: Use After Free in libwebsockets WebSocket server [epel-10] https://bugzilla.redhat.com/show_bug.cgi?id=2405247 [ 5 ] Bug #2405249 - CVE-2025-11677 libwebsockets: Use After Free in libwebsockets WebSocket server [epel-9] https://bugzilla.redhat.com/show_bug.cgi?id=2405249 [ 6 ] Bug #2405251 - CVE-2025-11677 libwebsockets: Use After Free in libwebsockets WebSocket server [fedora-42] https:/...

Read the Full Advisory

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2025-0c12fa2541' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

Severity
critical
Lowest
Low
Medium
High
Critical

Name: libwebsockets
Product: Fedora 42
Version: 4.3.7
Release: 2.fc42
URL: http://libwebsockets.org
Summary: Lightweight C library for Websockets

Topics%20covered

Topics Covered

security advisory security issue fedora buffer overflow out-of-bounds read libwebsockets

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Related News

Your message here