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Medium ALSA-2026:89814 1 CVE

Moderate: kernel-rt security update

Published Oct 26, 2026 · Updated Oct 29, 2026

Summary

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

* kernel: KVM: s390: pci: Reject adapter interrupt forwarding if already enabled (CVE-2026-74515)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Fixed packages 10

ReleasePackageFixed in
AlmaLinux · 8 kernel-rt 4.18.0-553.179.1.rt7.520.el8_10
AlmaLinux · 8 kernel-rt-core 4.18.0-553.179.1.rt7.520.el8_10
AlmaLinux · 8 kernel-rt-debug 4.18.0-553.179.1.rt7.520.el8_10
AlmaLinux · 8 kernel-rt-debug-core 4.18.0-553.179.1.rt7.520.el8_10
AlmaLinux · 8 kernel-rt-debug-devel 4.18.0-553.179.1.rt7.520.el8_10
AlmaLinux · 8 kernel-rt-debug-modules 4.18.0-553.179.1.rt7.520.el8_10
AlmaLinux · 8 kernel-rt-debug-modules-extra 4.18.0-553.179.1.rt7.520.el8_10
AlmaLinux · 8 kernel-rt-devel 4.18.0-553.179.1.rt7.520.el8_10
AlmaLinux · 8 kernel-rt-modules 4.18.0-553.179.1.rt7.520.el8_10
AlmaLinux · 8 kernel-rt-modules-extra 4.18.0-553.179.1.rt7.520.el8_10

Vulnerabilities 1

  • High 8.8

    KVM: s390: pci: Reject adapter interrupt forwarding if already enabled

    In the Linux kernel, the following vulnerability has been resolved: KVM: s390: pci: Reject adapter interrupt forwarding if already enabled The MPCIFC instruction doesn't allow registering adapter interrupts without first unregistering. So reject any request t…

References

  • report
    https://access.redhat.com/security/cve/CVE-2026-74515
  • report
    https://bugzilla.redhat.com/2517006
  • advisory
    https://errata.almalinux.org/8/ALSA-2026-89814.html