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Fedora 43 ObjFW Critical Buffer Overflow Advisory 2026-dd875b58bb

fedora
Calendar Grey June 1, 2026
Dist Fedora Esm H88
Critical update for Fedora 43 addressing buffer overflow issues in ObjFW. Security patches are essential for system integrity.
Update to 1.5.4

Summary

ObjFW is a portable, lightweight framework for the Objective-C language. It

enables you to write an application in Objective-C that will run on any

platform supported by ObjFW without having to worry about differences between

operating systems or various frameworks you would otherwise need if you want to

be portable.

It supports all modern Objective-C features when using Clang, but is also

compatible with GCC \u2265 4.6 to allow maximum portability.

ObjFW also comes with its own lightweight and extremely fast Objective-C

runtime, which in real world use cases was found to be significantly faster

than both GNU's and Apple's runtime.

Update Information:

Update to 1.5.4. Fixes a buffer overflow caused by integer promotion rules in OFBMPImageFormatHandler and OFQOIImageFormatHandler. Update to 1.5.3

Topics%20covered

Topics Covered

security advisory fedora buffer overflow critical objfw integer promotion

Change Log

* Sat May 23 2026 Jonathan Schleifer - 1.5.4-1 - Update to 1.5.4 * Wed May 20 2026 Jonathan Schleifer - 1.5.3-1 - Update to 1.5.3

References

Fedora Update Notification FEDORA-2026-dd875b58bb 2026-06-01 01:00:49.844243+00:00
Name : objfw Product : Fedora 43 Version : 1.5.4 Release : 1.fc43 URL : https://objfw.nil.im Summary : Portable, lightweight framework for the Objective-C language Description : ObjFW is a portable, lightweight framework for the Objective-C language. It enables you to write an application in Objective-C that will run on any platform supported by ObjFW without having to worry about differences between operating systems or various frameworks you would otherwise need if you want to be portable.
It supports all modern Objective-C features when using Clang, but is also compatible with GCC \u2265 4.6 to allow maximum portability.
ObjFW also comes with its own lightweight and extremely fast Objective-C runtime, which in real world use cases was found to be significantly faster than both GNU's and Apple's runtime.

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-dd875b58bb' 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
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Name: objfw
Product: Fedora 43
Version: 1.5.4
Release: 1.fc43
URL: https://objfw.nil.im
Summary: Portable, lightweight framework for the Objective-C language

Topics%20covered

Topics Covered

security advisory fedora buffer overflow critical objfw integer promotion

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