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Oracle Linux 8 Important Kernel Security Advisory ELSA-2026-21706

oracle
Calendar Grey June 3, 2026
Oracle Linux Logo Esm H88
Important kernel updates for Oracle Linux 8 address multiple vulnerabilities enhancing system integrity.
The following updated rpms for Oracle Linux 8 have been uploaded to the Unbreakable Linux Network:

Summary

[4.18.0-553.126.1] - 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] [4.18.0-553.126.1] - crypto: af_alg - Work around empty control messages without MSG_MORE (Thomas Huth) [RHEL-175772] - crypto: af_alg - Fix regression on empty requests (Thomas Huth) [RHEL-175772] - crypto: af_alg - fix use-after-free in af_alg_accept() due to bh_lock_sock() (Thomas Huth) [RHEL-175772] - crypto: af_alg - remove redundant initializations of sk_family (Thomas Huth) [RHEL-175772] - crypto: af_alg - Use bh_lock_sock in sk_destruct (Thomas Huth) [RHEL-175772] - crypto: algif_ae...

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Topics Covered

security advisory important kernel system integrity patching Oracle Linux

SRPMs

http://oss.oracle.com/ol8/SRPMS-updates/kernel-4.18.0-553.126.1.el8_10.src.rpm

x86_64

bpftool-4.18.0-553.126.1.el8_10.x86_64.rpm kernel-4.18.0-553.126.1.el8_10.x86_64.rpm kernel-abi-stablelists-4.18.0-553.126.1.el8_10.noarch.rpm kernel-core-4.18.0-553.126.1.el8_10.x86_64.rpm kernel-cross-headers-4.18.0-553.126.1.el8_10.x86_64.rpm kernel-debug-4.18.0-553.126.1.el8_10.x86_64.rpm kernel-debug-core-4.18.0-553.126.1.el8_10.x86_64.rpm kernel-debug-devel-4.18.0-553.126.1.el8_10.x86_64.rpm kernel-debug-modules-4.18.0-553.126.1.el8_10.x86_64.rpm kernel-debug-modules-extra-4.18.0-553.126.1.el8_10.x86_64.rpm kernel-devel-4.18.0-553.126.1.el8_10.x86_64.rpm kernel-doc-4.18.0-553.126.1.el8_10.noarch.rpm kernel-headers-4.18.0-553.126.1.el8_10.x86_64.rpm kernel-modules-4.18.0-553.126.1.el8_10.x86_64.rpm kernel-modules-extra-4.18.0-553.126.1.el8_10.x86_64.rpm kernel-tools-4.18.0-553.126.1.el8_10.x86_64.rpm kernel-tools-libs-4.18.0-553.126.1.el8_10.x86_64.rpm kernel-tools-libs-devel-4.18.0-553.126.1.el8_10.x86_64.rpm perf-4.18.0-553.126.1.el8_10.x86_64.rpm python3-perf-4.18.0-553.126....

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aarch64

bpftool-4.18.0-553.126.1.el8_10.aarch64.rpm kernel-cross-headers-4.18.0-553.126.1.el8_10.aarch64.rpm kernel-headers-4.18.0-553.126.1.el8_10.aarch64.rpm kernel-tools-4.18.0-553.126.1.el8_10.aarch64.rpm kernel-tools-libs-4.18.0-553.126.1.el8_10.aarch64.rpm kernel-tools-libs-devel-4.18.0-553.126.1.el8_10.aarch64.rpm perf-4.18.0-553.126.1.el8_10.aarch64.rpm python3-perf-4.18.0-553.126.1.el8_10.aarch64.rpm

Severity
important
Lowest
Low
Medium
High
Critical

Related CVEs: CVE-2025-39981 CVE-2025-68183 CVE-2025-68347 CVE-2025-71116 CVE-2026-23243 CVE-2026-23270 CVE-2026-23455 CVE-2026-31408 CVE-2026-31532 CVE-2026-31684 CVE-2026-31685 CVE-2026-31709 CVE-2026-43020 CVE-2026-43027 CVE-2026-43051 CVE-2026-43158 CVE-2026-43163 CVE-2026-43190

Topics%20covered

Topics Covered

security advisory important kernel system integrity patching Oracle Linux

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