Red Hat Product Errata RHSA-2026:55761 - Security Advisory Issued: 2026-08-17 Updated: 2026-08-19 RHSA-2026:55761 - Security Advisory Overview Updated Packages Synopsis Important: kpatch-patch-4_18_0-477_107_1, kpatch-patch-4_18_0-477_120_1, kpatch-patch-4_18_0-477_130_1, kpatch-patch-4_18_0-477_143_1, and kpatch-patch-4_18_0-477_97_1 security update Type/Severity Security Advisory: Important Red Hat Lightspeed patch analysis Identify and remediate systems affected by this advisory. View affected systems Topic An update for multiple packages is now available for Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Description 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-4.18.0-477.97.1.el8_8. Security Fix(es): kernel: ipv6: icmp: clear skb2->cb[] in ip6_err_gen_icmpv6_unreach() (CVE-2026-43038) kernel: dlm: validate length in dlm_search_rsb_tree (CVE-2026-43125) kernel: netfilter: flowtable: strictly check for maximum number of actions (CVE-2026-43329) kernel: net: sched: UAF via missing handler for TC_ACT_CONSUMED in tcf_qevent_handle (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. Solution For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Affected Products Red Hat Enterprise Linux for x86_64 - Extended Life Cycle Long Life 8.8 x86_64 Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.8 ppc64le Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.8 x86_64 Fixes BZ - 2464397 - CVE-2026-43038 kernel: ipv6: icmp: clear skb2->cb[] in ip6_err_gen_icmpv6_unreach() BZ - 2467234 - CVE-2026-43125 kernel: dlm: validate length in dlm_search_rsb_tree BZ - 2468124 - CVE-2026-43329 kernel: netfilter: flowtable: strictly check for maximum number of actions BZ - 2504052 - CVE-2026-64530 kernel: net: sched: UAF via missing handler for TC_ACT_CONSUMED in tcf_qevent_handle CVEs CVE-2026-43038 CVE-2026-43125 CVE-2026-43329 CVE-2026-64530 References https://access.redhat.com/security/updates/classification/#important Note: More recent versions of these packages may be available. Click a package name for more details. 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Update Services for SAP Solutions 8.8 SRPM kpatch-patch-4_18_0-477_107_1-1-12.el8_8.src.rpm SHA-256: 2a7f63f42733bf6b4135199ce945a78f250ab927311bf74a8f2db5fcced234d8 kpatch-patch-4_18_0-477_120_1-1-11.el8_8.src.rpm SHA-256: 4be9191f50c24f7f58c4a87f23c1e9b2b0e6ee7c0d09eb42bcad2e3db6d6adbc kpatch-patch-4_18_0-477_130_1-1-9.el8_8.src.rpm SHA-256: dd34410b860bd5d2beb139eba1c029188c9fc18a6601b100b5c8b1199f2b0365 kpatch-patch-4_18_0-477_143_1-1-5.el8_8.src.rpm SHA-256: 533a1b3abcd688648b746249deac9e4e61c98798dcffc40e0b7648c28e509fe6 kpatch-patch-4_18_0-477_97_1-1-16.el8_8.src.rpm SHA-256: faea823ed334cefb75c41d449cab97a2a9fc9be3e038c982224ac362e0c0d848 x86_64 kpatch-patch-4_18_0-477_107_1-1-12.el8_8.x86_64.rpm SHA-256: 66b394a8f0a2a09fd3cdfd27a8a086e16a2df64b130529c4948914714c7e275d kpatch-patch-4_18_0-477_107_1-debuginfo-1-12.el8_8.x86_64.rpm SHA-256: cf7591efa698a7b5205909d262a114daae5153ad52209a296a55b798298627e1 kpatch-patch-4_18_0-477_107_1-debugsource-1-12.el8_8.x86_64.rpm SHA-256: 731853da84f28ae56c3fe32c5faffee06f2560a35ed8f0eb32357cd49016669c kpatch-patch-4_18_0-477_120_1-1-11.el8_8.x86_64.rpm SHA-256: 47f91b019b199b7844d15b5128b35159712a41857c824543c5e508a854fd3467 kpatch-patch-4_18_0-477_120_1-debuginfo-1-11.el8_8.x86_64.rpm SHA-256: b7218eba9621f9664273b4600aba9de228c133f433e8a36482604e120ec09e6a kpatch-patch-4_18_0-477_120_1-debugsource-1-11.el8_8.x86_64.rpm SHA-256: 3eefa7d91e57b5d4ba38707067bb2d2cb7422e9364f378e37f1221e588ab123c kpatch-patch-4_18_0-477_130_1-1-9.el8_8.x86_64.rpm SHA-256: 3761dbe8560aca0e340033a6d05c237de75e550d2912a40fa875ec656d8f8e7e kpatch-patch-4_18_0-477_130_1-debuginfo-1-9.el8_8.x86_64.rpm SHA-256: 6147b938fbbf9c0c5fb59fb31dd3206c579e9e1a71628d31ffcb774f9ff2714c kpatch-patch-4_18_0-477_130_1-debugsource-1-9.el8_8.x86_64.rpm SHA-256: e6b0537cd8337e8b9