[El-errata] ELSA-2026-26427 Important: Oracle Linux 8 kernel security update

[Errata Announcements for Oracle Linux]

Oracle Linux Security Advisory ELSA-2026-26427

http://linux.oracle.com/errata/ELSA-2026-26427.html

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

x86_64:
bpftool-4.18.0-553.134.1.el8_10.x86_64.rpm
kernel-4.18.0-553.134.1.el8_10.x86_64.rpm
kernel-abi-stablelists-4.18.0-553.134.1.el8_10.noarch.rpm
kernel-core-4.18.0-553.134.1.el8_10.x86_64.rpm
kernel-cross-headers-4.18.0-553.134.1.el8_10.x86_64.rpm
kernel-debug-4.18.0-553.134.1.el8_10.x86_64.rpm
kernel-debug-core-4.18.0-553.134.1.el8_10.x86_64.rpm
kernel-debug-devel-4.18.0-553.134.1.el8_10.x86_64.rpm
kernel-debug-modules-4.18.0-553.134.1.el8_10.x86_64.rpm
kernel-debug-modules-extra-4.18.0-553.134.1.el8_10.x86_64.rpm
kernel-devel-4.18.0-553.134.1.el8_10.x86_64.rpm
kernel-doc-4.18.0-553.134.1.el8_10.noarch.rpm
kernel-headers-4.18.0-553.134.1.el8_10.x86_64.rpm
kernel-modules-4.18.0-553.134.1.el8_10.x86_64.rpm
kernel-modules-extra-4.18.0-553.134.1.el8_10.x86_64.rpm
kernel-tools-4.18.0-553.134.1.el8_10.x86_64.rpm
kernel-tools-libs-4.18.0-553.134.1.el8_10.x86_64.rpm
kernel-tools-libs-devel-4.18.0-553.134.1.el8_10.x86_64.rpm
perf-4.18.0-553.134.1.el8_10.x86_64.rpm
python3-perf-4.18.0-553.134.1.el8_10.x86_64.rpm

aarch64:
bpftool-4.18.0-553.134.1.el8_10.aarch64.rpm
kernel-cross-headers-4.18.0-553.134.1.el8_10.aarch64.rpm
kernel-headers-4.18.0-553.134.1.el8_10.aarch64.rpm
kernel-tools-4.18.0-553.134.1.el8_10.aarch64.rpm
kernel-tools-libs-4.18.0-553.134.1.el8_10.aarch64.rpm
kernel-tools-libs-devel-4.18.0-553.134.1.el8_10.aarch64.rpm
perf-4.18.0-553.134.1.el8_10.aarch64.rpm
python3-perf-4.18.0-553.134.1.el8_10.aarch64.rpm


SRPMS:
http://oss.oracle.com/ol8/SRPMS-updates/kernel-4.18.0-553.134.1.el8_10.src.rpm

Related CVEs:

CVE-2026-31669
CVE-2026-31786
CVE-2026-31787
CVE-2026-43110
CVE-2026-43329
CVE-2026-46056
CVE-2026-46125
CVE-2026-46152




Description of changes:

[4.18.0-553.134.1]
- 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]

[4.18.0-553.134.1]
- wifi: mac80211: remove station if connection prep fails (Jose Ignacio Tornos Martinez) [RHEL-180120] {CVE-2026-46125}
- wifi: mac80211: drop stray 'static' from fast-RX rx_result (CKI Backport Bot) [RHEL-180058] {CVE-2026-46152}
- Bluetooth: hci_event: fix potential UAF in SSP passkey handlers (CKI Backport Bot) [RHEL-179360] {CVE-2026-46056}
- netfilter: flowtable: strictly check for maximum number of actions (Florian Westphal) [RHEL-176909] {CVE-2026-43329}
- netfilter: nf_tables_offload: add nft_flow_action_entry_next() and use it (Florian Westphal) [RHEL-176909] {CVE-2026-43329}
- mptcp: fix slab-use-after-free in __inet_lookup_established (Davide Caratti) [RHEL-171500] {CVE-2026-31669}
- xen/privcmd: fix double free via VMA splitting (Vitaly Kuznetsov) [RHEL-172482] {CVE-2026-31787}
- wifi: brcmfmac: validate bsscfg indices in IF events (CKI Backport Bot) [RHEL-173853] {CVE-2026-43110}

[4.18.0-553.133.1]
- Buffer overflow in drivers/xen/sys-hypervisor.c (CKI Backport Bot) [RHEL-172504] {CVE-2026-31786}