[El-errata] ELSA-2026-50271 Important: Oracle Linux 8 Unbreakable Enterprise kernel security update

[Errata Announcements for Oracle Linux]

Oracle Linux Security Advisory ELSA-2026-50271

http://linux.oracle.com/errata/ELSA-2026-50271.html

The following updated rpms for Oracle Linux 8 have been uploaded to the Unbreakable Linux Network:

x86_64:
bpftool-5.15.0-320.202.8.3.el8uek.x86_64.rpm
kernel-uek-5.15.0-320.202.8.3.el8uek.x86_64.rpm
kernel-uek-core-5.15.0-320.202.8.3.el8uek.x86_64.rpm
kernel-uek-debug-5.15.0-320.202.8.3.el8uek.x86_64.rpm
kernel-uek-debug-core-5.15.0-320.202.8.3.el8uek.x86_64.rpm
kernel-uek-debug-devel-5.15.0-320.202.8.3.el8uek.x86_64.rpm
kernel-uek-debug-modules-5.15.0-320.202.8.3.el8uek.x86_64.rpm
kernel-uek-debug-modules-extra-5.15.0-320.202.8.3.el8uek.x86_64.rpm
kernel-uek-devel-5.15.0-320.202.8.3.el8uek.x86_64.rpm
kernel-uek-doc-5.15.0-320.202.8.3.el8uek.noarch.rpm
kernel-uek-modules-5.15.0-320.202.8.3.el8uek.x86_64.rpm
kernel-uek-modules-extra-5.15.0-320.202.8.3.el8uek.x86_64.rpm
kernel-uek-container-5.15.0-320.202.8.3.el8uek.x86_64.rpm
kernel-uek-container-debug-5.15.0-320.202.8.3.el8uek.x86_64.rpm

aarch64:
bpftool-5.15.0-320.202.8.3.el8uek.aarch64.rpm
kernel-uek-5.15.0-320.202.8.3.el8uek.aarch64.rpm
kernel-uek-core-5.15.0-320.202.8.3.el8uek.aarch64.rpm
kernel-uek-debug-5.15.0-320.202.8.3.el8uek.aarch64.rpm
kernel-uek-debug-core-5.15.0-320.202.8.3.el8uek.aarch64.rpm
kernel-uek-debug-devel-5.15.0-320.202.8.3.el8uek.aarch64.rpm
kernel-uek-debug-modules-5.15.0-320.202.8.3.el8uek.aarch64.rpm
kernel-uek-debug-modules-extra-5.15.0-320.202.8.3.el8uek.aarch64.rpm
kernel-uek-devel-5.15.0-320.202.8.3.el8uek.aarch64.rpm
kernel-uek-doc-5.15.0-320.202.8.3.el8uek.noarch.rpm
kernel-uek-modules-5.15.0-320.202.8.3.el8uek.aarch64.rpm
kernel-uek-modules-extra-5.15.0-320.202.8.3.el8uek.aarch64.rpm
kernel-uek-container-5.15.0-320.202.8.3.el8uek.aarch64.rpm
kernel-uek-container-debug-5.15.0-320.202.8.3.el8uek.aarch64.rpm


SRPMS:
http://oss.oracle.com/ol8/SRPMS-updates/kernel-uek-5.15.0-320.202.8.3.el8uek.src.rpm

Related CVEs:

CVE-2026-23270
CVE-2026-31402




Description of changes:

[5.15.0-320.202.8.3]
- nfsd: fix heap overflow in NFSv4.0 LOCK replay cache (Jeff Layton)  [Orabug: 39362036]  {CVE-2026-31402}
- net/sched: Only allow act_ct to bind to clsact/ingress qdiscs and shared blocks (Victor Nogueira)  [Orabug: 39362005]  {CVE-2026-23270}
- KVM: x86: disable preemption around the call to kvm_arch_vcpu_{un|}blocking (Maxim Levitsky)  [Orabug: 39362018]
- KVM: Don't block+unblock when halt-polling is successful (Sean Christopherson)  [Orabug: 39362018]