[El-errata] ELSA-2026-500573 Important: Oracle Linux 8 Unbreakable Enterprise kernel security update

[Errata Announcements for Oracle Linux]

Oracle Linux Security Advisory ELSA-2026-500573

http://linux.oracle.com/errata/ELSA-2026-500573.html

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

x86_64:
kernel-uek-5.4.17-2136.361.4.el8uek.x86_64.rpm
kernel-uek-container-5.4.17-2136.361.4.el8uek.x86_64.rpm
kernel-uek-container-debug-5.4.17-2136.361.4.el8uek.x86_64.rpm
kernel-uek-debug-5.4.17-2136.361.4.el8uek.x86_64.rpm
kernel-uek-debug-devel-5.4.17-2136.361.4.el8uek.x86_64.rpm
kernel-uek-devel-5.4.17-2136.361.4.el8uek.x86_64.rpm
kernel-uek-doc-5.4.17-2136.361.4.el8uek.noarch.rpm


SRPMS:
http://oss.oracle.com/ol8/SRPMS-updates/kernel-uek-5.4.17-2136.361.4.el8uek.src.rpm

Related CVEs:

CVE-2026-23356
CVE-2026-74580
CVE-2026-98432
CVE-2026-99999




Description of changes:

[5.4.17-2136.361.4]
- vhost-scsi: zero misaligned I/O bounce pages (Shubham Antil)  [Orabug: 40193932]

[5.4.17-2136.361.3]
- KVM: x86: Use active memslots for the per-vCPU MMIO cache (Jinu Kim)  [Orabug: 40180571]
- drbd: fix "LOGIC BUG" in drbd_al_begin_io_nonblock() (Lars Ellenberg)  [Orabug: 39130967]  {CVE-2026-23356}
- rds: cong: fix race while clearing rs_cong_mask (Anand Khoje)  [Orabug: 39519861]
- hugetlbfs: hold trunc_rwsem during hugepage migration (Stephen Brennan)  [Orabug: 39541934]
- ipv4: validate checksum_start before completing checksum (Michael S. Tsirkin)  [Orabug: 40165812]  {CVE-2026-99999}
- netfilter: nfnetlink_queue: unbreak SCTP traffic (Antonio Ojea)  [Orabug: 40165812]
- net: add inline function skb_csum_is_sctp (Xin Long)  [Orabug: 40165812]
- ipv4: free inet_opt and ireq_opt after an RCU grace period (Eric Dumazet)  [Orabug: 40165790]  {CVE-2026-98432}
- vhost: reset the vring metadata cache on vring reconfiguration (Jun Yang)  [Orabug: 39917526]  {CVE-2026-74580}

[5.4.17-2136.361.2]
- ionic: serialize hardware timestamp Tx queue access (Joe Dobosenski)  [Orabug: 40061822]

[5.4.17-2136.361.1]
- net/mlx5: Set parent device before health polling (Manjunath Patil)  [Orabug: 39208695]