[El-errata] ELSA-2026-82807 Important: Oracle Linux 8 kernel security update

[Errata Announcements for Oracle Linux]

Oracle Linux Security Advisory ELSA-2026-82807

http://linux.oracle.com/errata/ELSA-2026-82807.html

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

x86_64:
bpftool-4.18.0-553.173.1.el8_10.x86_64.rpm
kernel-4.18.0-553.173.1.el8_10.x86_64.rpm
kernel-abi-stablelists-4.18.0-553.173.1.el8_10.noarch.rpm
kernel-core-4.18.0-553.173.1.el8_10.x86_64.rpm
kernel-cross-headers-4.18.0-553.173.1.el8_10.x86_64.rpm
kernel-debug-4.18.0-553.173.1.el8_10.x86_64.rpm
kernel-debug-core-4.18.0-553.173.1.el8_10.x86_64.rpm
kernel-debug-devel-4.18.0-553.173.1.el8_10.x86_64.rpm
kernel-debug-modules-4.18.0-553.173.1.el8_10.x86_64.rpm
kernel-debug-modules-extra-4.18.0-553.173.1.el8_10.x86_64.rpm
kernel-devel-4.18.0-553.173.1.el8_10.x86_64.rpm
kernel-doc-4.18.0-553.173.1.el8_10.noarch.rpm
kernel-headers-4.18.0-553.173.1.el8_10.x86_64.rpm
kernel-modules-4.18.0-553.173.1.el8_10.x86_64.rpm
kernel-modules-extra-4.18.0-553.173.1.el8_10.x86_64.rpm
kernel-tools-4.18.0-553.173.1.el8_10.x86_64.rpm
kernel-tools-libs-4.18.0-553.173.1.el8_10.x86_64.rpm
kernel-tools-libs-devel-4.18.0-553.173.1.el8_10.x86_64.rpm
perf-4.18.0-553.173.1.el8_10.x86_64.rpm
python3-perf-4.18.0-553.173.1.el8_10.x86_64.rpm

aarch64:
bpftool-4.18.0-553.173.1.el8_10.aarch64.rpm
kernel-cross-headers-4.18.0-553.173.1.el8_10.aarch64.rpm
kernel-headers-4.18.0-553.173.1.el8_10.aarch64.rpm
kernel-tools-4.18.0-553.173.1.el8_10.aarch64.rpm
kernel-tools-libs-4.18.0-553.173.1.el8_10.aarch64.rpm
kernel-tools-libs-devel-4.18.0-553.173.1.el8_10.aarch64.rpm
perf-4.18.0-553.173.1.el8_10.aarch64.rpm
python3-perf-4.18.0-553.173.1.el8_10.aarch64.rpm


SRPMS:
http://oss.oracle.com/ol8/SRPMS-updates/kernel-4.18.0-553.173.1.el8_10.src.rpm

Related CVEs:

CVE-2026-31678
CVE-2026-63920
CVE-2026-68108
CVE-2026-68236
CVE-2026-68278
CVE-2026-68409
CVE-2026-72318
CVE-2026-80887
CVE-2026-89811




Description of changes:

[4.18.0-553.173.1]
- Update Oracle Linux certificates (Kevin Lyons)
- Disable signing for aarch64 (Ilya Okomin)
- Oracle Linux RHCK Module Signing Key was added to the kernel trusted keys list (olkmod_signing_key.pem) [Orabug: 29539237]
- Update x509.genkey [Orabug: 24817676]
- Conflict with shim-ia32 and shim-x64 <= 15.3-1.0.3
- Remove upstream reference during boot (Kevin Lyons) [Orabug: 34750652]
- Add new Oracle Linux Driver Signing (key 1) certificate [Orabug: 37985772]

[4.18.0-553.173.1]
- drm/amdkfd: Add TLB flush after MES queue eviction/suspension (Jocelyn Falempe) [RHEL-262108] {CVE-2026-89811}
- drm/amd/display: set new_stream to NULL after release (Jocelyn Falempe) [RHEL-260521] {CVE-2026-68236}
- drm/vmwgfx: use check_add_overflow for shader size+offset bound (Jocelyn Falempe) [RHEL-258131] {CVE-2026-80887}
- drm/amdgpu/vce: fix integer overflow in image size (Jocelyn Falempe) [RHEL-237823 RHEL-268877] {CVE-2026-68108}
- drm/dp/mst: fix buffer overflows in sideband chunk accumulation (Jocelyn Falempe) [RHEL-240862] {CVE-2026-68278}
- ipv6: validate extension header length before copying to cmsg (Antoine Tenart) [RHEL-225371] {CVE-2026-63920}
- wifi: mac80211: defer link RX stats percpu free to RCU (CKI Backport Bot) [RHEL-263760] {CVE-2026-68409}
- cifs: validate DFS referral string offsets (CKI Backport Bot) [RHEL-261990] {CVE-2026-72318}
- openvswitch: vport: fix self-deadlock on release of tunnel ports (Timothy Redaelli) [RHEL-253844] {CVE-2026-31678}
- openvswitch: defer tunnel netdev_put to RCU release (Timothy Redaelli) [RHEL-253844] {CVE-2026-31678}