Important: kernel security update (Oracle Linux 8)

[4.18.0-553.129.1]
- 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]

[4.18.0-553.129.1]
- smb: client: reject userspace cifs.spnego descriptions (Paulo Alcantara) [RHEL-178938] {CVE-2026-46243}

[4.18.0-553.128.1]
- smb: client: fix OOB reads parsing symlink error response (Paulo Alcantara) [RHEL-171465] {CVE-2026-31613}
- geneve: Suppress list corruption splat in geneve_destroy_tunnels(). (Antoine Tenart) [RHEL-168961]
- geneve: Fix use-after-free in geneve_find_dev(). (Antoine Tenart) [RHEL-168961] {CVE-2025-21858}
- netfilter: nf_tables: release flowtable after rcu grace period on error (Florian Westphal) [RHEL-160514] {CVE-2026-23392}

[4.18.0-553.127.1]
- smc: Fix use-after-free in tcp_write_timer_handler(). (Steve Best) [RHEL-167084] {CVE-2023-53781}
- nbd: defer config unlock in nbd_genl_connect (CKI Backport Bot) [RHEL-166939] {CVE-2025-68366}
- libceph: prevent potential out-of-bounds reads in handle_auth_done() (CKI Backport Bot) [RHEL-143892] {CVE-2026-22984}
- libceph: replace overzealous BUG_ON in osdmap_apply_incremental() (CKI Backport Bot) [RHEL-143874] {CVE-2026-22990}