[El-errata] ELSA-2026-3963 Moderate: Oracle Linux 8 kernel security update

[Errata Announcements for Oracle Linux]

Oracle Linux Security Advisory ELSA-2026-3963

http://linux.oracle.com/errata/ELSA-2026-3963.html

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

x86_64:
bpftool-4.18.0-553.111.1.el8_10.x86_64.rpm
kernel-4.18.0-553.111.1.el8_10.x86_64.rpm
kernel-abi-stablelists-4.18.0-553.111.1.el8_10.noarch.rpm
kernel-core-4.18.0-553.111.1.el8_10.x86_64.rpm
kernel-cross-headers-4.18.0-553.111.1.el8_10.x86_64.rpm
kernel-debug-4.18.0-553.111.1.el8_10.x86_64.rpm
kernel-debug-core-4.18.0-553.111.1.el8_10.x86_64.rpm
kernel-debug-devel-4.18.0-553.111.1.el8_10.x86_64.rpm
kernel-debug-modules-4.18.0-553.111.1.el8_10.x86_64.rpm
kernel-debug-modules-extra-4.18.0-553.111.1.el8_10.x86_64.rpm
kernel-devel-4.18.0-553.111.1.el8_10.x86_64.rpm
kernel-doc-4.18.0-553.111.1.el8_10.noarch.rpm
kernel-headers-4.18.0-553.111.1.el8_10.x86_64.rpm
kernel-modules-4.18.0-553.111.1.el8_10.x86_64.rpm
kernel-modules-extra-4.18.0-553.111.1.el8_10.x86_64.rpm
kernel-tools-4.18.0-553.111.1.el8_10.x86_64.rpm
kernel-tools-libs-4.18.0-553.111.1.el8_10.x86_64.rpm
kernel-tools-libs-devel-4.18.0-553.111.1.el8_10.x86_64.rpm
perf-4.18.0-553.111.1.el8_10.x86_64.rpm
python3-perf-4.18.0-553.111.1.el8_10.x86_64.rpm

aarch64:
bpftool-4.18.0-553.111.1.el8_10.aarch64.rpm
kernel-cross-headers-4.18.0-553.111.1.el8_10.aarch64.rpm
kernel-headers-4.18.0-553.111.1.el8_10.aarch64.rpm
kernel-tools-4.18.0-553.111.1.el8_10.aarch64.rpm
kernel-tools-libs-4.18.0-553.111.1.el8_10.aarch64.rpm
kernel-tools-libs-devel-4.18.0-553.111.1.el8_10.aarch64.rpm
perf-4.18.0-553.111.1.el8_10.aarch64.rpm
python3-perf-4.18.0-553.111.1.el8_10.aarch64.rpm


SRPMS:
http://oss.oracle.com/ol8/SRPMS-updates/kernel-4.18.0-553.111.1.el8_10.src.rpm

Related CVEs:

CVE-2025-71085
CVE-2026-23001




Description of changes:

[4.18.0-553.111.1]
- 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]

[4.18.0-553.111.1]
- macvlan: fix possible UAF in macvlan_forward_source() (Hangbin Liu) [RHEL-144120] {CVE-2026-23001}

[4.18.0-553.110.1]
- pNFS: fix a missing wake up while waiting on NFS_LAYOUT_DRAIN (Olga Kornievskaia) [RHEL-131922]
- fbcon: Avoid using FNTCHARCNT() and hard-coded built-in font charcount (Jocelyn Falempe) [RHEL-148636]
- audit: Use the new {get,put}_fs_pwd_pool() APIs to get/put pwd references (Waiman Long) [RHEL-146026]
- fs: Add a pool of extra fs->pwd references to fs_struct (Waiman Long) [RHEL-146026]
- ipv6: BUG() in pskb_expand_head() as part of calipso_skbuff_setattr() (CKI Backport Bot) [RHEL-143535] {CVE-2025-71085}