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Oracle Linux 8 kernel Important Security Update ELSA-2026

Linuxsecurity •LinuxSecurity Advisories • October 19, 2026

Running self-managed GitLab? Critical flaws could allow server code execution. Check the fixes. ×

[5.15.0-325.221.6.4] - ipv4: free inet_opt and ireq_opt after an RCU grace period (Eric Dumazet) [Orabug: 40167661] {CVE-2026-98432} - ipv4: validate checksum_start before completing checksum (Michael S. Tsirkin) [Orabug: 40167656] {CVE-2026-99999} - netfilter: nfnetlink_queue: unbreak SCTP traffic (Antonio Ojea) [Orabug: 40167656]

bpftool-5.15.0-325.221.6.4.el8uek.x86_64.rpm kernel-uek-5.15.0-325.221.6.4.el8uek.x86_64.rpm kernel-uek-core-5.15.0-325.221.6.4.el8uek.x86_64.rpm kernel-uek-debug-5.15.0-325.221.6.4.el8uek.x86_64.rpm kernel-uek-debug-core-5.15.0-325.221.6.4.el8uek.x86_64.rpm kernel-uek-debug-devel-5.15.0-325.221.6.4.el8uek.x86_64.rpm kernel-uek-debug-modules-5.15.0-325.221.6.4.el8uek.x86_64.rpm kernel-uek-debug-modules-extra-5.15.0-325.221.6.4.el8uek.x86_64.rpm kernel-uek-devel-5.15.0-325.221.6.4.el8uek.x86_64.rpm kernel-uek-doc-5.15.0-325.221.6.4.el8uek.noarch.rpm kernel-uek-modules-5.15.0-325.221.6.4.el8uek.x86_64.rpm kernel-uek-modules-extra-5.15.0-325.221.6.4.el8uek.x86_64.rpm kernel-uek-container-5.15.0-325.221.6.4.el8uek.x86_64.rpm kernel-uek-container-debug-5.15.0-325.221.6.4.el8uek.x86_64.rpm

bpftool-5.15.0-325.221.6.4.el8uek.aarch64.rpm kernel-uek-5.15.0-325.221.6.4.el8uek.aarch64.rpm kernel-uek-core-5.15.0-325.221.6.4.el8uek.aarch64.rpm kernel-uek-debug-5.15.0-325.221.6.4.el8uek.aarch64.rpm kernel-uek-debug-core-5.15.0-325.221.6.4.el8uek.aarch64.rpm kernel-uek-debug-devel-5.15.0-325.221.6.4.el8uek.aarch64.rpm kernel-uek-debug-modules-5.15.0-325.221.6.4.el8uek.aarch64.rpm kernel-uek-debug-modules-extra-5.15.0-325.221.6.4.el8uek.aarch64.rpm kernel-uek-devel-5.15.0-325.221.6.4.el8uek.aarch64.rpm kernel-uek-doc-5.15.0-325.221.6.4.el8uek.noarch.rpm kernel-uek-modules-5.15.0-325.221.6.4.el8uek.aarch64.rpm kernel-uek-modules-extra-5.15.0-325.221.6.4.el8uek.aarch64.rpm kernel-uek-container-5.15.0-325.221.6.4.el8uek.aarch64.rpm kernel-uek-container-debug-5.15.0-325.221.6.4.el8uek.aarch64.rpm

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Critical Security Flaws in Oracle Linux Kernels Require Immediate Attention Oracle has released multiple security updates addressing critical vulnerabilities in its Linux kernels across various versions. The updates affect Oracle Linux 7, 8, 9, and the Unbreakable Enterprise Kernel (UEK) with CVEs including CVE-2026-98432 and CVE-2026-99999, which could allow remote code execution. The flaws were disclosed on October 15, 2026, and patches are now available. Attackers could exploit these vulnerabilities to execute arbitrary code on affected systems, posing a significant risk to organizations running self-managed GitLab. The updates include kernel versions 5.4.17, 5.15.0, and 6.12.0 across the different Oracle Linux distributions. Security professionals are urged to apply these patches immediately to mitigate potential exploitation. The vulnerabilities have been assigned high CVSS scores, indicating their severity and the urgency of remediation. 6 sources 78

Extracted Entities

CVEs (3)

CVE-2026-98260 CVE-2026-98432 CVE-2026-99999

Platforms (1)

Linux