Red Hat Product Errata RHSA-2026:55618 - Security Advisory Issued: 2026-08-17 Updated: 2026-08-17 RHSA-2026:55618 - Security Advisory Overview Updated Packages Synopsis Important: kpatch-patch-6_12_0-211_16_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 kpatch-patch-6_12_0-211_16_1 is now available for Red Hat Enterprise Linux 10. 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-6.12.0-211.16.1.el10_2. Security Fix(es): kernel: rxrpc: Fix RxGK token loading to check bounds (CVE-2026-31641) kernel: ipv6: icmp: clear skb2->cb[] in ip6_err_gen_icmpv6_unreach() (CVE-2026-43038) kernel: netfilter: flowtable: strictly check for maximum number of actions (CVE-2026-43329) kernel: netfilter: nft_inner: Fix IPv6 inner_thoff desync (CVE-2026-46244) 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 10 x86_64 Red Hat Enterprise Linux for x86_64 - Extended Update Support 10.2 x86_64 Red Hat Enterprise Linux for Power, little endian 10 ppc64le Red Hat Enterprise Linux for Power, little endian - Extended Update Support 10.2 ppc64le Red Hat Enterprise Linux for Power, little endian - 4 years of support 10.2 ppc64le Red Hat Enterprise Linux for x86_64 - 4 years of updates 10.2 x86_64 Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 10.2 x86_64 Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 10.2 ppc64le Fixes BZ - 2461548 - CVE-2026-31641 kernel: rxrpc: Fix RxGK token loading to check bounds BZ - 2464397 - CVE-2026-43038 kernel: ipv6: icmp: clear skb2->cb[] in ip6_err_gen_icmpv6_unreach() BZ - 2468124 - CVE-2026-43329 kernel: netfilter: flowtable: strictly check for maximum number of actions BZ - 2484451 - CVE-2026-46244 kernel: netfilter: nft_inner: Fix IPv6 inner_thoff desync BZ - 2504052 - CVE-2026-64530 kernel: net: sched: UAF via missing handler for TC_ACT_CONSUMED in tcf_qevent_handle CVEs CVE-2026-31641 CVE-2026-43038 CVE-2026-43329 CVE-2026-46244 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. Red Hat Enterprise Linux for x86_64 10 SRPM kpatch-patch-6_12_0-211_16_1-1-6.el10_2.src.rpm SHA-256: 461408ffb3eee0f90d810e1dbb472c9395b02f6824c7a2558fb6e663d589f190 x86_64 kpatch-patch-6_12_0-211_16_1-1-6.el10_2.x86_64.rpm SHA-256: 544cbf03e6ad1109a000ddeae11a1c02f0ae2adb1591c30a4e2112bbae0225bb kpatch-patch-6_12_0-211_16_1-debuginfo-1-6.el10_2.x86_64.rpm SHA-256: 62361d8fcd85f3b754f66ac43cb297b8894d8a371a2d906d8a04cac47a9f2f95 Red Hat Enterprise Linux for x86_64 - Extended Update Support 10.2 SRPM kpatch-patch-6_12_0-211_16_1-1-6.el10_2.src.rpm SHA-256: 461408ffb3eee0f90d810e1dbb472c9395b02f6824c7a2558fb6e663d589f190 x86_64 kpatch-patch-6_12_0-211_16_1-1-6.el10_2.x86_64.rpm SHA-256: 544cbf03e6ad1109a000ddeae11a1c02f0ae2adb1591c30a4e2112bbae0225bb kpatch-patch-6_12_0-211_16_1-debuginfo-1-6.el10_2.x86_64.rpm SHA-256: 62361d8fcd85f3b754f66ac43cb297b8894d8a371a2d906d8a04cac47a9f2f95 Red Hat Enterprise Linux for Power, little endian 10 SRPM kpatch-patch-6_12_0-211_16_1-1-6.el10_2.src.rpm SHA-256: 461408ffb3eee0f90d810e1dbb472c9395b02f6824c7a2558fb6e663d589f190 ppc64le kpatch-patch-6_12_0-211_16_1-1-6.el10_2.ppc64le.rpm SHA-256: 7eaf6f6da53b30a038a34cf430a69d04adc03c058767234f727d9d36860b6c49 kpatch-patch-6_12_0-211_16_1-debuginfo-1-6.el10_2.ppc64le.rpm SHA-256: 0be7779ae0b058234506bd6d48018b1587ca1a07e2477bd2cd01292e388b9f13 kpatch-patch-6_12_0-211_16_1-debugsource-1-6.el10_2.ppc64le.rpm SHA-256: 5e269b7f6f9cdc71fb62fd81d3e5da6250cf07b27e826ecb4d192ee1a549fa98 Red Hat Enterprise Linux for Power, little endian - Extended Update Support 10.2 SRPM kpatch-patch-6_12_0-211_16_1-1-6.el10_2.src.rpm SHA-256: 461408ffb3eee0f90d810e1dbb472c9395b02f6824c7a2558fb6e663d589f190 ppc64le kpatch-patch-6_12_0-211_16_1-1-6.el10_2.ppc64le.rpm SHA-256: 7eaf6f6da53b30a038a34cf430a69d04adc03c058767234f727d9d36860b6c49 kpatch-patch-6_12_0-211_16_1-debuginfo-1-6.el10_2.ppc64le.rpm SHA-256: 0be7779ae0b058234506bd6d48018b1587ca1a07e2477bd2cd01292e388b9f13 kpatch-patch-6_12_0-211_16_1-debugsource-1-6.el10_2.ppc64le.rpm SHA-256: 5e269b7f6f9cdc71fb62fd81d3e5da6250cf07b27e826ecb4d192ee1a549fa98 Red Hat Enterprise Linux for Power, little endian - 4 years of support 10.2 SRPM kpatch-patch-6_12_0-211_16_1-1-6.el10_2.src.rpm SHA-256: 461408ffb3eee0f90d810e1dbb472c9395b02f6824c7a2558fb6e663d589f190 ppc64le kpatch-patch-6_12_0-211_16_1-1-6.el10_2.ppc64le.rpm SHA-256: 7eaf6f6da53b30a038a34cf430a69d04adc03c058767234f727d9d36860b6c49 kpatch-patch-6_12_0-211_16_1-debuginfo-1-6.el10_2.ppc64le.rpm SHA-256: 0be7779ae0b058234506bd6d48018b1587ca1a07e2477bd2cd01292e388b9f13 kpatch-patch-6_12_0-211_16_1-debugsource-1-6.el10_2.ppc64le.rpm SHA-256: 5e269b7f6f9cdc71fb62fd81d3e5da6250cf07b27e826ecb4d192ee1a549fa98 Red Hat Enterprise Linux for x86_64 - 4 years of updates 10.2 SRPM kpatch-patch-6_12_0-211_16_1-1-6.el10_2.src.rpm SHA-256: 461408ffb3eee0f90d810e1dbb472c9395b02f6824c7a2558fb6e663d589f190 x86_64 kpatch-patch-6_12_0-211_16_1-1-6.el10_2.x86_64.rpm SHA-256: 544cbf03e6ad1109a000ddeae11a1c02f0ae2adb1591c30a4e2112bbae0225bb kpatch-patch-6_12_0-211_16_1-debuginfo-1-6.el10_2.x86_64.rpm SHA-256: 62361d8fcd85f3b754f66ac43cb297b8894d8a371a2d906d8a04cac47a9f2f95 Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 10.2 SRPM kpatch-patch-6_12_0-211_16_1-1-6.el10_2.src.rpm SHA-256: 461408ffb3eee0f90d810e1dbb472c9395b02f6824c7a2558fb6e663d589f190 x86_64 kpatch-patch-6_12_0-211_16_1-1-6.el10_2.x86_64.rpm SHA-256: 544cbf03e6ad1109a000ddeae11a1c02f0ae2adb1591c30a4e2112bbae0225bb kpatch-patch-6_12_0-211_16_1-debuginfo-1-6.el10_2.x86_64.rpm SHA-256: 62361d8fcd85f3b754f66ac43cb297b8894d8a371a2d906d8a04cac47a9f2f95 Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 10.2 SRPM kpatch-patch-6_12_0-211_16_1-1-6.el10_2.src.rpm SHA-256: 461408ffb3eee0f90d810e1dbb472c9395b02f6824c7a2558fb6e663d589f190 ppc64le kpatch-patch-6_12_0-211_16_1-1-6.el10_2.ppc64le.rpm SHA-256: 7eaf6f6da53b30a038a34cf430a69d04adc03c058767234f727d9d36860b6c49 kpatch-patch-6_12_0-211_16_1-debuginfo-1-6.el10_2.ppc64le.rpm SHA-256: 0be7779ae0b058234506bd6d48018b1587ca1a07e2477bd2cd01292e388b9f13 kpatch-patch-6_12_0-211_16_1-debugsource-1-6.el10_2.ppc64le.rpm SHA-256: 5e269b7f6f9cdc71fb62fd81d3e5da6250cf07b27e826ecb4d192ee1a549fa98 The Red Hat security contact is secalert@redhat.com . 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