[El-errata] ELSA-2026-49857 Moderate: Oracle Linux 8 kernel security, bug fix, and enhancement update

[Errata Announcements for Oracle Linux]

Oracle Linux Security Advisory ELSA-2026-49857

http://linux.oracle.com/errata/ELSA-2026-49857.html

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

x86_64:
bpftool-4.18.0-553.151.1.el8_10.x86_64.rpm
kernel-4.18.0-553.151.1.el8_10.x86_64.rpm
kernel-abi-stablelists-4.18.0-553.151.1.el8_10.noarch.rpm
kernel-core-4.18.0-553.151.1.el8_10.x86_64.rpm
kernel-cross-headers-4.18.0-553.151.1.el8_10.x86_64.rpm
kernel-debug-4.18.0-553.151.1.el8_10.x86_64.rpm
kernel-debug-core-4.18.0-553.151.1.el8_10.x86_64.rpm
kernel-debug-devel-4.18.0-553.151.1.el8_10.x86_64.rpm
kernel-debug-modules-4.18.0-553.151.1.el8_10.x86_64.rpm
kernel-debug-modules-extra-4.18.0-553.151.1.el8_10.x86_64.rpm
kernel-devel-4.18.0-553.151.1.el8_10.x86_64.rpm
kernel-doc-4.18.0-553.151.1.el8_10.noarch.rpm
kernel-headers-4.18.0-553.151.1.el8_10.x86_64.rpm
kernel-modules-4.18.0-553.151.1.el8_10.x86_64.rpm
kernel-modules-extra-4.18.0-553.151.1.el8_10.x86_64.rpm
kernel-tools-4.18.0-553.151.1.el8_10.x86_64.rpm
kernel-tools-libs-4.18.0-553.151.1.el8_10.x86_64.rpm
kernel-tools-libs-devel-4.18.0-553.151.1.el8_10.x86_64.rpm
perf-4.18.0-553.151.1.el8_10.x86_64.rpm
python3-perf-4.18.0-553.151.1.el8_10.x86_64.rpm

aarch64:
bpftool-4.18.0-553.151.1.el8_10.aarch64.rpm
kernel-cross-headers-4.18.0-553.151.1.el8_10.aarch64.rpm
kernel-headers-4.18.0-553.151.1.el8_10.aarch64.rpm
kernel-tools-4.18.0-553.151.1.el8_10.aarch64.rpm
kernel-tools-libs-4.18.0-553.151.1.el8_10.aarch64.rpm
kernel-tools-libs-devel-4.18.0-553.151.1.el8_10.aarch64.rpm
perf-4.18.0-553.151.1.el8_10.aarch64.rpm
python3-perf-4.18.0-553.151.1.el8_10.aarch64.rpm


SRPMS:
http://oss.oracle.com/ol8/SRPMS-updates/kernel-4.18.0-553.151.1.el8_10.src.rpm

Related CVEs:

CVE-2026-52923




Description of changes:

[4.18.0-553.151.1]
- 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]

[4.18.0-553.151.1]
- net: dns_resolver: allow shorter names in dns_query() (Paulo Alcantara) [RHEL-213976]
- net/dns_resolver: use kasprintf + kmemdup_nul to simplify dns_query (Paulo Alcantara) [RHEL-213976]
- net/dns_resolver: consolidate namelen checks in dns_query (Paulo Alcantara) [RHEL-213976]
- dns: remove redundant zero length namelen check (Paulo Alcantara) [RHEL-213976]
- ipc: limit next_id allocation to the valid ID range (Rafael Aquini) [RHEL-188216] {CVE-2026-52923}
- KVM: s390: Limit adapter indicator access to mapped page (Christoph Schlameuss) [RHEL-183880]