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Alerts This Week
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Oracle Linux 8 Kernel Critical Buffer Overflow Threat ELSA-2026-25121

oracle
Calendar Grey June 18, 2026
Oracle Linux Logo Esm H88
Critical updates for kernel on Oracle Linux 8 address multiple severe exploits, ensuring enhanced security and stability.
The following updated rpms for Oracle Linux 8 have been uploaded to the Unbreakable Linux Network:

Summary

[4.18.0-553.132.1] - 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] [4.18.0-553.132.1] - ip6_tunnel: clear skb2->cb[] in ip4ip6_err() (Guillaume Nault) [RHEL-172640] {CVE-2026-43037} - dlm: fix buffer overflow from negative len in dlm_search_rsb_tree (Alexander Aring) [RHEL-173986] {CVE-2026-43125} - dlm: validate length in dlm_search_rsb_tree (Alexander Aring) [RHEL-173986] {CVE-2026-43125} [4.18.0-553.131.1] - RDMA/mlx4: Fix mis-use of RCU in mlx4_srq_event() (Kamal Heib) [RHEL-179982] {CVE-2026-46181} - nvme...

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Topics%20covered

Topics Covered

security advisory denial of service buffer overflow critical kernel Oracle

SRPMs

http://oss.oracle.com/ol8/SRPMS-updates/kernel-4.18.0-553.132.1.el8_10.src.rpm

x86_64

bpftool-4.18.0-553.132.1.el8_10.x86_64.rpm kernel-4.18.0-553.132.1.el8_10.x86_64.rpm kernel-abi-stablelists-4.18.0-553.132.1.el8_10.noarch.rpm kernel-core-4.18.0-553.132.1.el8_10.x86_64.rpm kernel-cross-headers-4.18.0-553.132.1.el8_10.x86_64.rpm kernel-debug-4.18.0-553.132.1.el8_10.x86_64.rpm kernel-debug-core-4.18.0-553.132.1.el8_10.x86_64.rpm kernel-debug-devel-4.18.0-553.132.1.el8_10.x86_64.rpm kernel-debug-modules-4.18.0-553.132.1.el8_10.x86_64.rpm kernel-debug-modules-extra-4.18.0-553.132.1.el8_10.x86_64.rpm kernel-devel-4.18.0-553.132.1.el8_10.x86_64.rpm kernel-doc-4.18.0-553.132.1.el8_10.noarch.rpm kernel-headers-4.18.0-553.132.1.el8_10.x86_64.rpm kernel-modules-4.18.0-553.132.1.el8_10.x86_64.rpm kernel-modules-extra-4.18.0-553.132.1.el8_10.x86_64.rpm kernel-tools-4.18.0-553.132.1.el8_10.x86_64.rpm kernel-tools-libs-4.18.0-553.132.1.el8_10.x86_64.rpm kernel-tools-libs-devel-4.18.0-553.132.1.el8_10.x86_64.rpm perf-4.18.0-553.132.1.el8_10.x86_64.rpm python3-perf-4.18.0-553.132....

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aarch64

bpftool-4.18.0-553.132.1.el8_10.aarch64.rpm kernel-cross-headers-4.18.0-553.132.1.el8_10.aarch64.rpm kernel-headers-4.18.0-553.132.1.el8_10.aarch64.rpm kernel-tools-4.18.0-553.132.1.el8_10.aarch64.rpm kernel-tools-libs-4.18.0-553.132.1.el8_10.aarch64.rpm kernel-tools-libs-devel-4.18.0-553.132.1.el8_10.aarch64.rpm perf-4.18.0-553.132.1.el8_10.aarch64.rpm python3-perf-4.18.0-553.132.1.el8_10.aarch64.rpm

Severity
critical
Lowest
Low
Medium
High
Critical

Related CVEs: CVE-2023-53781 CVE-2025-21858 CVE-2025-68366 CVE-2026-22984 CVE-2026-22990 CVE-2026-23392 CVE-2026-31581 CVE-2026-31613 CVE-2026-43037 CVE-2026-43038 CVE-2026-43125 CVE-2026-45852 CVE-2026-46181

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow critical kernel Oracle

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