RHSA-2026:62372: Important: kernel security update
Important: kernel security update
Other sources
The kernel packages contain the Linux kernel, the core of any Linux operating system.Security Fix(es): kernel: net: bridge: stop fast-leave after deleting a port group (CVE-2026-74480) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
— Red Hat
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
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redhat/kernelto a version that resolves this vulnerability.Fixed in 4.18.0-305.204.1.el8_4 - Upgrade
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redhat/bpftoolto a version that resolves this vulnerability.Fixed in 4.18.0-305.204.1.el8_4 - Upgrade
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redhat/bpftool-debuginfoto a version that resolves this vulnerability.Fixed in 4.18.0-305.204.1.el8_4 - Upgrade
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redhat/kernel-abi-stableliststo a version that resolves this vulnerability.Fixed in 4.18.0-305.204.1.el8_4 - Upgrade
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redhat/kernel-coreto a version that resolves this vulnerability.Fixed in 4.18.0-305.204.1.el8_4 - Upgrade
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redhat/kernel-cross-headersto a version that resolves this vulnerability.Fixed in 4.18.0-305.204.1.el8_4 - Upgrade
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redhat/kernel-debugto a version that resolves this vulnerability.Fixed in 4.18.0-305.204.1.el8_4 - Upgrade
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redhat/kernel-debug-coreto a version that resolves this vulnerability.Fixed in 4.18.0-305.204.1.el8_4 - Upgrade
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redhat/kernel-debug-debuginfoto a version that resolves this vulnerability.Fixed in 4.18.0-305.204.1.el8_4 - Upgrade
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redhat/kernel-debug-develto a version that resolves this vulnerability.Fixed in 4.18.0-305.204.1.el8_4 - Upgrade
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redhat/kernel-debug-modulesto a version that resolves this vulnerability.Fixed in 4.18.0-305.204.1.el8_4 - Upgrade
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redhat/kernel-debug-modules-extrato a version that resolves this vulnerability.Fixed in 4.18.0-305.204.1.el8_4 - Upgrade
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redhat/kernel-debuginfoto a version that resolves this vulnerability.Fixed in 4.18.0-305.204.1.el8_4 - Upgrade
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redhat/kernel-develto a version that resolves this vulnerability.Fixed in 4.18.0-305.204.1.el8_4 - Upgrade
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redhat/kernel-docto a version that resolves this vulnerability.Fixed in 4.18.0-305.204.1.el8_4 - Upgrade
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redhat/kernel-headersto a version that resolves this vulnerability.Fixed in 4.18.0-305.204.1.el8_4 - Upgrade
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redhat/kernel-modulesto a version that resolves this vulnerability.Fixed in 4.18.0-305.204.1.el8_4 - Upgrade
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redhat/kernel-modules-extrato a version that resolves this vulnerability.Fixed in 4.18.0-305.204.1.el8_4 - Upgrade
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redhat/kernel-toolsto a version that resolves this vulnerability.Fixed in 4.18.0-305.204.1.el8_4 - Upgrade
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redhat/kernel-tools-debuginfoto a version that resolves this vulnerability.Fixed in 4.18.0-305.204.1.el8_4 - Upgrade
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redhat/kernel-tools-libsto a version that resolves this vulnerability.Fixed in 4.18.0-305.204.1.el8_4 - Upgrade
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redhat/perfto a version that resolves this vulnerability.Fixed in 4.18.0-305.204.1.el8_4 - Upgrade
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redhat/perf-debuginfoto a version that resolves this vulnerability.Fixed in 4.18.0-305.204.1.el8_4 - Upgrade
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redhat/python3-perfto a version that resolves this vulnerability.Fixed in 4.18.0-305.204.1.el8_4 - Upgrade
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redhat/python3-perf-debuginfoto a version that resolves this vulnerability.Fixed in 4.18.0-305.204.1.el8_4 - Upgrade
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kernelto a version that resolves this vulnerability.Patch CVE-2026-74480 - Operational
Reboot the system after applying the kernel security update so the changes take effect.
Event History
Frequently Asked Questions
Which systems and packages are covered by this advisory?
The advisory lists Red Hat Enterprise Linux for x86_64 Extended Life Cycle Long Life and Red Hat Enterprise Linux Server AUS. Affected package listings include kernel, kernel-core, kernel-abi-stablelists, kernel-cross-headers, bpftool, and bpftool-debuginfo.
Does the advisory provide exploit prerequisites, default-configuration impact, or temporary mitigations?
No. The provided advisory text does not state attacker prerequisites, whether default configurations are affected, or any compensating controls for systems that cannot be updated immediately.