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Fedora 43: kernel-headers Important VMSCAPE Mitigation CVE-2025-40300

fedora
Calendar Grey September 18, 2025
Dist Fedora Esm H88
In Fedora 43, kernel headers receive crucial updates addressing significant bugs along with measures to counter the VMSCAPE vulnerability.
The 6.17 rc6 kernel build contains a number of important fixes across the tree

Summary

Kernel-headers includes the C header files that specify the interface

between the Linux kernel and userspace libraries and programs. The

header files define structures and constants that are needed for

building most standard programs and are also needed for rebuilding the

glibc package.

Update Information:

The 6.17 rc6 kernel build contains a number of important fixes across the tree. It also includes mitigations for the VMSCAPE vulnerability on x86 CPUs. This has been assigned CVE-2025-40300.

Change Log

* Mon Sep 15 2025 Justin M. Forbes - 6.17.0-6 - Linux v6.17-rc6

References

Fedora Update Notification FEDORA-2025-22c5cc654d 2025-09-18 00:16:07.326046+00:00 Name : kernel-headers Product : Fedora 43 Version : 6.17.0 Release : 0.rc6.49.fc43 URL : http://www.kernel.org/ Summary : Header files for the Linux kernel for use by glibc Description : Kernel-headers includes the C header files that specify the interface between the Linux kernel and userspace libraries and programs. The header files define structures and constants that are needed for building most standard programs and are also needed for rebuilding the glibc package.

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2025-22c5cc654d' 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: kernel-headers
Product: Fedora 43
Version: 6.17.0
Release: 0.rc6.49.fc43
Summary: Header files for the Linux kernel for use by glibc

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