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Fedora 42 Firefox Update 148.0 Key Security Advisory FEDORA-2026-0709b275a5

fedora
Calendar Grey February 27, 2026
Dist Fedora Esm H88
Update NSS to 3.120.1 and Firefox to 148.0 on Fedora 42 to enhance performance and security.
Update NSS to 3.120.1 Update to Firefox 148.0

Summary

Mozilla Firefox is an open-source web browser, designed for standards

compliance, performance and portability.

Update Information:

Update NSS to 3.120.1 Update to Firefox 148.0

Topics%20covered

Topics Covered

security advisory fedora update important firefox web browser

Change Log

* Mon Feb 23 2026 Bojan Smojver - 148.0-1 - Add patch for dstdint compilation problem * Mon Feb 23 2026 Martin Stransky - 148.0-1 - Update to latest upstream (148.0)

References

Fedora Update Notification FEDORA-2026-0709b275a5 2026-02-27 01:18:53.068267+00:00 Name : firefox Product : Fedora 42 Version : 148.0 Release : 1.fc42 URL : https://www.firefox.com/ Summary : Mozilla Firefox Web browser Description : Mozilla Firefox is an open-source web browser, designed for standards compliance, performance and portability.

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-0709b275a5' 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
important
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Name: firefox
Product: Fedora 42
Version: 148.0
Release: 1.fc42
URL: https://www.firefox.com/
Summary: Mozilla Firefox Web browser

Topics%20covered

Topics Covered

security advisory fedora update important firefox web browser

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