RHSA-2026:55762: Important: kpatch-patch-4_18_0-553_109_1, kpatch-patch-4_18_0-553_125_1, kpatch-patch-4_18_0-553_53_1, kpatch-patch-4_18_0-553_72_1, and kpatch-patch-4_18_0-553_85_1 security update
This is a kernel live patch module which can be loaded by the kpatch command line utility to modify the code of a running kernel. This patch module is targeted for kernel-4.18.0-553.53.1.el810.Security Fix(es): kernel: ipv6: icmp: clear skb2->cb[] in ip6errgenicmpv6unreach() (CVE-2026-43038) kernel: dlm: validate length in dlmsearchrsbtree (CVE-2026-43125) kernel: netfilter: flowtable: strictly check for maximum number of actions (CVE-2026-43329) kernel: net: sched: UAF via missing handler for TCACTCONSUMED in tcfqeventhandle (CVE-2026-64530) 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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-553_109_1-1-9.el8_10 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-553_125_1-1-6.el8_10 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-553_53_1-1-16.el8_10 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-553_72_1-1-13.el8_10 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-553_85_1-1-11.el8_10 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-553_109_1-debuginfo-1-9.el8_10 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-553_109_1-debugsource-1-9.el8_10 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-553_125_1-debuginfo-1-6.el8_10 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-553_125_1-debugsource-1-6.el8_10 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-553_53_1-debuginfo-1-16.el8_10 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-553_53_1-debugsource-1-16.el8_10 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-553_72_1-debuginfo-1-13.el8_10 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-553_72_1-debugsource-1-13.el8_10 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-553_85_1-debuginfo-1-11.el8_10 - Upgrade
Upgrade
redhat/kpatch-patchto a version that resolves this vulnerability.Fixed in 4_18_0-553_85_1-debugsource-1-11.el8_10 - Upgrade
Upgrade
kpatch security update (kernel live patch modules)to a version that resolves this vulnerability.Patch kpatch-patch-4_18_0-553_109_1 - Upgrade
Upgrade
kpatch security update (kernel live patch modules)to a version that resolves this vulnerability.Patch kpatch-patch-4_18_0-553_125_1 - Upgrade
Upgrade
kpatch security update (kernel live patch modules)to a version that resolves this vulnerability.Patch kpatch-patch-4_18_0-553_53_1 - Upgrade
Upgrade
kpatch security update (kernel live patch modules)to a version that resolves this vulnerability.Patch kpatch-patch-4_18_0-553_72_1 - Upgrade
Upgrade
kpatch security update (kernel live patch modules)to a version that resolves this vulnerability.Patch kpatch-patch-4_18_0-553_85_1 - Configuration
Apply/load the kpatch live patch module only for the targeted kernel version specified: kernel-4.18.0-553.53.1.el8_10.< (so the CVE fixes in the advisory are installed for that kernel build).
Red Hat kpatch Target kernel = kernel-4.18.0-553.53.1.el8_10.<variant>
Event History
Frequently Asked Questions
What is the severity of RHSA-2026:55762?
The severity of RHSA-2026:55762 is rated as 65.
What vulnerabilities does RHSA-2026:55762 address?
RHSA-2026:55762 addresses security issues related to the IPv6 implementation in the Linux kernel.
How do I fix RHSA-2026:55762?
To fix RHSA-2026:55762, apply the latest security updates for the kpatch-patch module.
What version of the kernel does RHSA-2026:55762 affect?
RHSA-2026:55762 affects the kernel version 4.18.0-553.53.1.el8_10.
Is RHSA-2026:55762 a critical update?
RHSA-2026:55762 is considered an important update and should be applied to maintain security.