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Medium RLSA-2026:89816 1 CVE

Moderate: kernel security update

Published Oct 27, 2026 · Updated Oct 27, 2026

Summary

The kernel packages contain the Linux kernel, the core of any Linux operating system.

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 1

ReleasePackageFixed in
Rocky Linux · 8 kernel 0:4.18.0-553.179.1.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://bugzilla.redhat.com/show_bug.cgi?id=2517006
  • advisory
    https://access.redhat.com/errata/RHSA-2026:89816