RHSA-2026:95212: Important: kernel security, bug fix, and enhancement update
Important: kernel security, bug fix, and enhancement update
Other sources
The kernel packages contain the Linux kernel, the core of any Linux operating system.Security Fix(es): kernel: sctp: stream: fully roll back denied add-stream state (CVE-2026-52929) kernel: net/smc: fix UAF in smccdcrxhandler() by pinning the socket (CVE-2026-64541) kernel: sctp: clear newtransport when removing a peer (CVE-2026-74586) kernel: RDMA/rxe: Fix responder UAF on IBQPMAXDESTRDATOMIC modifyqp (CVE-2026-80864) kernel: RDMA/rxe: Fix OOB in freerdatomicresources() (CVE-2026-80863) kernel: openvswitch: Fix CT limit teardown use-after-free (CVE-2026-89488) Bug Fix(es) and Enhancement(s): RHEL8.10 - s390/smp: Remove conditional emergency signal usage (JIRA:RHEL-298849) 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.
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redhat/kernelto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10 - Upgrade
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redhat/bpftoolto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10 - Upgrade
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redhat/bpftool-debuginfoto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10 - Upgrade
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redhat/kernel-abi-stableliststo a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10 - Upgrade
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redhat/kernel-coreto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10 - Upgrade
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redhat/kernel-cross-headersto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10 - Upgrade
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redhat/kernel-debugto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10 - Upgrade
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redhat/kernel-debug-coreto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10 - Upgrade
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redhat/kernel-debug-debuginfoto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10 - Upgrade
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redhat/kernel-debug-develto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10 - Upgrade
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redhat/kernel-debug-modulesto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10 - Upgrade
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redhat/kernel-debug-modules-extrato a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10 - Upgrade
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redhat/kernel-debuginfoto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10 - Upgrade
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redhat/kernel-develto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10 - Upgrade
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redhat/kernel-docto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10 - Upgrade
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redhat/kernel-headersto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10 - Upgrade
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redhat/kernel-modulesto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10 - Upgrade
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redhat/kernel-modules-extrato a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10 - Upgrade
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redhat/kernel-toolsto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10 - Upgrade
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redhat/kernel-tools-debuginfoto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10 - Upgrade
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redhat/kernel-tools-libsto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10 - Upgrade
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redhat/perfto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10 - Upgrade
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redhat/perf-debuginfoto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10 - Upgrade
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redhat/python3-perfto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10 - Upgrade
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redhat/python3-perf-debuginfoto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10 - Upgrade
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redhat/kernel-debuginfo-common-s390xto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10 - Upgrade
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redhat/kernel-zfcpdumpto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10 - Upgrade
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redhat/kernel-zfcpdump-coreto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10 - Upgrade
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redhat/kernel-zfcpdump-debuginfoto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10 - Upgrade
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redhat/kernel-zfcpdump-develto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10 - Upgrade
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redhat/kernel-zfcpdump-modulesto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10 - Upgrade
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redhat/kernel-zfcpdump-modules-extrato a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10 - Upgrade
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redhat/kernel-debuginfo-common-ppc64leto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10 - Upgrade
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redhat/bpftoolto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10.aa - Upgrade
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redhat/bpftool-debuginfoto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10.aa - Upgrade
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redhat/kernelto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10.aa - Upgrade
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redhat/kernel-coreto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10.aa - Upgrade
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redhat/kernel-cross-headersto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10.aa - Upgrade
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redhat/kernel-debugto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10.aa - Upgrade
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redhat/kernel-debug-coreto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10.aa - Upgrade
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redhat/kernel-debug-debuginfoto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10.aa - Upgrade
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redhat/kernel-debug-develto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10.aa - Upgrade
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redhat/kernel-debug-modulesto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10.aa - Upgrade
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redhat/kernel-debug-modules-extrato a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10.aa - Upgrade
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redhat/kernel-debuginfoto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10.aa - Upgrade
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redhat/kernel-debuginfo-common-aarch64to a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10.aa - Upgrade
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redhat/kernel-develto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10.aa - Upgrade
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redhat/kernel-headersto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10.aa - Upgrade
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redhat/kernel-modulesto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10.aa - Upgrade
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redhat/kernel-modules-extrato a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10.aa - Upgrade
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redhat/kernel-toolsto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10.aa - Upgrade
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redhat/kernel-tools-debuginfoto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10.aa - Upgrade
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redhat/kernel-tools-libsto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10.aa - Upgrade
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redhat/perfto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10.aa - Upgrade
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redhat/perf-debuginfoto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10.aa - Upgrade
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redhat/python3-perfto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10.aa - Upgrade
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redhat/python3-perf-debuginfoto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10.aa - Upgrade
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redhat/kernel-tools-libs-develto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10 - Upgrade
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redhat/kernel-tools-libs-develto a version that resolves this vulnerability.Fixed in 4.18.0-553.184.1.el8_10.aa - Operational
Reboot the system after applying the kernel update for the changes to take effect.
Event History
Frequently Asked Questions
Which installed package variants should be checked when applying this advisory?
The advisory covers kernel, kernel-core, kernel-cross-headers, kernel-debug, kernel-debug-core, kernel-debug-debuginfo, bpftool, and bpftool-debuginfo packages. Verify the applicable installed variants are updated together.
Is there an architecture-specific change included in this update?
Yes. The update includes an RHEL 8.10 s390/smp change that removes conditional emergency signal usage.