[El-errata] ELSA-2026-50270 Important: Oracle Linux 9 Unbreakable Enterprise kernel security update

[Errata Announcements for Oracle Linux]

Oracle Linux Security Advisory ELSA-2026-50270

http://linux.oracle.com/errata/ELSA-2026-50270.html

The following updated rpms for Oracle Linux 9 have been uploaded to the Unbreakable Linux Network:

x86_64:
kernel-uek-6.12.0-202.76.4.2.el9uek.x86_64.rpm
kernel-uek-core-6.12.0-202.76.4.2.el9uek.x86_64.rpm
kernel-uek-debug-6.12.0-202.76.4.2.el9uek.x86_64.rpm
kernel-uek-debug-core-6.12.0-202.76.4.2.el9uek.x86_64.rpm
kernel-uek-debug-devel-6.12.0-202.76.4.2.el9uek.x86_64.rpm
kernel-uek-debug-modules-6.12.0-202.76.4.2.el9uek.x86_64.rpm
kernel-uek-debug-modules-core-6.12.0-202.76.4.2.el9uek.x86_64.rpm
kernel-uek-debug-modules-deprecated-6.12.0-202.76.4.2.el9uek.x86_64.rpm
kernel-uek-debug-modules-desktop-6.12.0-202.76.4.2.el9uek.x86_64.rpm
kernel-uek-debug-modules-extra-6.12.0-202.76.4.2.el9uek.x86_64.rpm
kernel-uek-debug-modules-extra-netfilter-6.12.0-202.76.4.2.el9uek.x86_64.rpm
kernel-uek-debug-modules-usb-6.12.0-202.76.4.2.el9uek.x86_64.rpm
kernel-uek-debug-modules-wireless-6.12.0-202.76.4.2.el9uek.x86_64.rpm
kernel-uek-devel-6.12.0-202.76.4.2.el9uek.x86_64.rpm
kernel-uek-doc-6.12.0-202.76.4.2.el9uek.noarch.rpm
kernel-uek-modules-6.12.0-202.76.4.2.el9uek.x86_64.rpm
kernel-uek-modules-core-6.12.0-202.76.4.2.el9uek.x86_64.rpm
kernel-uek-modules-deprecated-6.12.0-202.76.4.2.el9uek.x86_64.rpm
kernel-uek-modules-desktop-6.12.0-202.76.4.2.el9uek.x86_64.rpm
kernel-uek-modules-extra-6.12.0-202.76.4.2.el9uek.x86_64.rpm
kernel-uek-modules-extra-netfilter-6.12.0-202.76.4.2.el9uek.x86_64.rpm
kernel-uek-modules-usb-6.12.0-202.76.4.2.el9uek.x86_64.rpm
kernel-uek-modules-wireless-6.12.0-202.76.4.2.el9uek.x86_64.rpm
kernel-uek-tools-6.12.0-202.76.4.2.el9uek.x86_64.rpm

aarch64:
kernel-uek-6.12.0-202.76.4.2.el9uek.aarch64.rpm
kernel-uek-core-6.12.0-202.76.4.2.el9uek.aarch64.rpm
kernel-uek-debug-6.12.0-202.76.4.2.el9uek.aarch64.rpm
kernel-uek-debug-core-6.12.0-202.76.4.2.el9uek.aarch64.rpm
kernel-uek-debug-devel-6.12.0-202.76.4.2.el9uek.aarch64.rpm
kernel-uek-debug-modules-6.12.0-202.76.4.2.el9uek.aarch64.rpm
kernel-uek-debug-modules-core-6.12.0-202.76.4.2.el9uek.aarch64.rpm
kernel-uek-debug-modules-deprecated-6.12.0-202.76.4.2.el9uek.aarch64.rpm
kernel-uek-debug-modules-desktop-6.12.0-202.76.4.2.el9uek.aarch64.rpm
kernel-uek-debug-modules-extra-6.12.0-202.76.4.2.el9uek.aarch64.rpm
kernel-uek-debug-modules-extra-netfilter-6.12.0-202.76.4.2.el9uek.aarch64.rpm
kernel-uek-debug-modules-usb-6.12.0-202.76.4.2.el9uek.aarch64.rpm
kernel-uek-debug-modules-wireless-6.12.0-202.76.4.2.el9uek.aarch64.rpm
kernel-uek-devel-6.12.0-202.76.4.2.el9uek.aarch64.rpm
kernel-uek-doc-6.12.0-202.76.4.2.el9uek.noarch.rpm
kernel-uek-modules-6.12.0-202.76.4.2.el9uek.aarch64.rpm
kernel-uek-modules-extra-6.12.0-202.76.4.2.el9uek.aarch64.rpm
kernel-uek-modules-core-6.12.0-202.76.4.2.el9uek.aarch64.rpm
kernel-uek-modules-deprecated-6.12.0-202.76.4.2.el9uek.aarch64.rpm
kernel-uek-modules-desktop-6.12.0-202.76.4.2.el9uek.aarch64.rpm
kernel-uek-modules-extra-netfilter-6.12.0-202.76.4.2.el9uek.aarch64.rpm
kernel-uek-modules-usb-6.12.0-202.76.4.2.el9uek.aarch64.rpm
kernel-uek-modules-wireless-6.12.0-202.76.4.2.el9uek.aarch64.rpm
kernel-uek-tools-6.12.0-202.76.4.2.el9uek.aarch64.rpm
kernel-uek64k-6.12.0-202.76.4.2.el9uek.aarch64.rpm
kernel-uek64k-core-6.12.0-202.76.4.2.el9uek.aarch64.rpm
kernel-uek64k-devel-6.12.0-202.76.4.2.el9uek.aarch64.rpm
kernel-uek64k-modules-6.12.0-202.76.4.2.el9uek.aarch64.rpm
kernel-uek64k-modules-core-6.12.0-202.76.4.2.el9uek.aarch64.rpm
kernel-uek64k-modules-deprecated-6.12.0-202.76.4.2.el9uek.aarch64.rpm
kernel-uek64k-modules-desktop-6.12.0-202.76.4.2.el9uek.aarch64.rpm
kernel-uek64k-modules-extra-6.12.0-202.76.4.2.el9uek.aarch64.rpm
kernel-uek64k-modules-extra-netfilter-6.12.0-202.76.4.2.el9uek.aarch64.rpm
kernel-uek64k-modules-usb-6.12.0-202.76.4.2.el9uek.aarch64.rpm
kernel-uek64k-modules-wireless-6.12.0-202.76.4.2.el9uek.aarch64.rpm


SRPMS:
http://oss.oracle.com/ol9/SRPMS-updates/kernel-uek-6.12.0-202.76.4.2.el9uek.src.rpm

Related CVEs:

CVE-2026-23270
CVE-2026-23278
CVE-2026-31402




Description of changes:

[6.12.0-202.76.4.2]
- net/sched: Only allow act_ct to bind to clsact/ingress qdiscs and shared blocks (Victor Nogueira)  [Orabug: 39361451]  {CVE-2026-23270}
- netfilter: nf_tables: always walk all pending catchall elements (Florian Westphal)  [Orabug: 39361449]  {CVE-2026-23278}
- nfsd: fix heap overflow in NFSv4.0 LOCK replay cache (Jeff Layton)  [Orabug: 39361444]  {CVE-2026-31402}