[El-errata] ELSA-2026-50318 Important: Oracle Linux 9 Unbreakable Enterprise kernel security update

[Errata Announcements for Oracle Linux]

Oracle Linux Security Advisory ELSA-2026-50318

http://linux.oracle.com/errata/ELSA-2026-50318.html

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

x86_64:
bpftool-5.15.0-321.202.5.2.el9uek.x86_64.rpm
kernel-uek-5.15.0-321.202.5.2.el9uek.x86_64.rpm
kernel-uek-core-5.15.0-321.202.5.2.el9uek.x86_64.rpm
kernel-uek-debug-5.15.0-321.202.5.2.el9uek.x86_64.rpm
kernel-uek-debug-core-5.15.0-321.202.5.2.el9uek.x86_64.rpm
kernel-uek-debug-devel-5.15.0-321.202.5.2.el9uek.x86_64.rpm
kernel-uek-debug-modules-5.15.0-321.202.5.2.el9uek.x86_64.rpm
kernel-uek-debug-modules-extra-5.15.0-321.202.5.2.el9uek.x86_64.rpm
kernel-uek-devel-5.15.0-321.202.5.2.el9uek.x86_64.rpm
kernel-uek-doc-5.15.0-321.202.5.2.el9uek.noarch.rpm
kernel-uek-modules-5.15.0-321.202.5.2.el9uek.x86_64.rpm
kernel-uek-modules-extra-5.15.0-321.202.5.2.el9uek.x86_64.rpm
kernel-uek-container-5.15.0-321.202.5.2.el9uek.x86_64.rpm
kernel-uek-container-debug-5.15.0-321.202.5.2.el9uek.x86_64.rpm



SRPMS:
http://oss.oracle.com/ol9/SRPMS-updates/kernel-uek-5.15.0-321.202.5.2.el9uek.src.rpm

Related CVEs:

CVE-2022-50073
CVE-2026-31504
CVE-2026-31533
CVE-2026-31657
CVE-2026-31669




Description of changes:

[5.15.0-321.202.5.2]
- net/tls: fix use-after-free in -EBUSY error path of tls_do_encryption (Muhammad Alifa Ramdhan)  [Orabug: 39543209]  {CVE-2026-31533}
- net: fix fanout UAF in packet_release() via NETDEV_UP race (Yochai Eisenrich)  [Orabug: 39543208]  {CVE-2026-31504}
- net: tap: NULL pointer derefence in dev_parse_header_protocol when skb->dev is null (Cezar Bulinaru)  [Orabug: 39543201]  {CVE-2022-50073}
- mptcp: fix slab-use-after-free in __inet_lookup_established (Jiayuan Chen)  [Orabug: 39543200]  {CVE-2026-31669}
- batman-adv: hold claim backbone gateways by reference (Haoze Xie)  [Orabug: 39543197]  {CVE-2026-31657}
- arm64: dts: pensando: drop elba penfw firmware node (Tom Saeger)  [Orabug: 39543196]