Red Hat Product Errata RHSA-2026:51035 - Security Advisory Issued: 2026-08-06 Updated: 2026-08-06 RHSA-2026:51035 - Security Advisory Overview Updated Packages Synopsis Moderate: kernel security, bug fix, and enhancement update Type/Severity Security Advisory: Moderate Red Hat Lightspeed patch analysis Identify and remediate systems affected by this advisory. View affected systems Topic An update for kernel is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Moderate. 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 The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): kernel: futex: Fix UaF between futex_key_to_node_opt() and vma_replace_policy() (CVE-2026-23415) kernel: netfilter: nfnetlink_cthelper: fix OOB read in nfnl_cthelper_dump_table() (CVE-2026-43450) Bug Fix(es) and Enhancement(s): kernel panics caused by NULL pointer dereferences within octeon_ep_vf [rhel-9.8.z] (JIRA:RHEL-186331) [RHEL 9.4] Kernel memory reclaim bug [rhel-9.8.z] (JIRA:RHEL-211058) Bond network interface is not coming up with MTU 9000 while vPMEM is enabled [rhel-9.8.z] (JIRA:RHEL-215575) 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 The system must be rebooted for this update to take effect. Red Hat recommends treating all kernel errata as security-relevant. Given the kernel's fundamental role, any bug has a higher chance of impacting system security, even if that impact only becomes clear after a fix is published. Therefore, Red Hat prioritizes delivering fixes that improve our customers' overall security posture. Because of this proactive approach, a patch may be associated with a CVE assignment at a future date. Retroactive CVE assignments are always documented in the corresponding errata and on Red Hat's CVE pages. We strongly advise against delaying updates, as doing so may leave your system exposed when protections are already available. Affected Products Red Hat Enterprise Linux for x86_64 9 x86_64 Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.8 x86_64 Red Hat Enterprise Linux for IBM z Systems 9 s390x Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.8 s390x Red Hat Enterprise Linux for Power, little endian 9 ppc64le Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.8 ppc64le Red Hat Enterprise Linux for ARM 64 9 aarch64 Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.8 aarch64 Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.8 ppc64le Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.8 x86_64 Red Hat CodeReady Linux Builder for x86_64 9 x86_64 Red Hat CodeReady Linux Builder for Power, little endian 9 ppc64le Red Hat CodeReady Linux Builder for ARM 64 9 aarch64 Red Hat CodeReady Linux Builder for IBM z Systems 9 s390x Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support 9.8 x86_64 Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support 9.8 ppc64le Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support 9.8 s390x Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support 9.8 aarch64 Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.8 aarch64 Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.8 s390x Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.8 x86_64 Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 9.8 aarch64 Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 9.8 ppc64le Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 9.8 s390x Fixes BZ - 2454320 - CVE-2026-23415 kernel: futex: Fix UaF between futex_key_to_node_opt() and vma_replace_policy() BZ - 2468228 - CVE-2026-43450 kernel: netfilter: nfnetlink_cthelper: fix OOB read in nfnl_cthelper_dump_table() CVEs CVE-2026-23415 CVE-2026-43450 References https://access.redhat.com/security/updates/classification/#moderate Note: More recent versions of these packages may be available. 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Red Hat Enterprise Linux for x86_64 9 SRPM kernel-5.14.0-687.36.1.el9_8.src.rpm SHA-256: c57c1b970d690b22348675c3983ace878fcf457ad4b580018e08ec4b689be0b1 x86_64 kernel-5.14.0-687.36.1.el9_8.x86_64.rpm SHA-256: 43f86730cb5867fbc58349142ba092cc24635363c0368d1d0a6384e727c49995 kernel-abi-stablelists-5.14.0-687.36.1.el9_8.noarch.rpm SHA-256: 2b4733e68e2d93b190b8b790bcb5c78b0f840732da494e6f9153d5863387470e kernel-core-5.14.0-687.36.1.el9_8.x86_64.rpm SHA-256: 3c9a4b0da6b8d9ed906b1a927e95555d3a520d82dbdeb0f557dfdc0e97d45b60 kernel-debug-5.14.0-687.36.1.el9_8.x86_64.rpm SHA-256: c81e070a3d7906234577e9327c70ceaf4a1559750c5a24e6ca61d1f6e9b852f6 kernel-debug-core-5.14.0-687.36.1.el9_8.x86_64.rpm SHA-256: d40e29eb02c3ff432def94497fec234b2d72c945ea32dba56265d739a86fdaa7 kernel-debug-debuginfo-5.14.0-687.36.1.el9_8.x86_64.rpm SHA-256: e57741939d29d0e9c7da1df620c3850de8cf82f4a68c22c76170d28ccdeee3b4 kernel-debug-debuginfo-5.14.0-687.36.1.el9_8.x86_64.rpm SHA-256: 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