RHSA-2026:30848 — Security Advisory

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 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.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• kernel: drm/amd/display: Do not skip unrelated mode changes in DSC validation (CVE-2026-31488)

• 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: ALSA: aloop: Fix peer runtime UAF during format-change stop (CVE-2026-46090)

• kernel: selinux: fix overlayfs mmap() and mprotect() access checks (CVE-2026-46054)

• kernel: RDMA/iwcm: Fix workqueue list corruption by removing work_list (CVE-2026-45898)

• kernel: RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path (CVE-2026-46189)

• kernel: RDMA/mlx5: Fix error path fall-through in mlx5_ib_dev_res_srq_init() (CVE-2026-46176)

Bug Fix(es) and Enhancement(s):

• [RHEL-9.8.z]: Update the mlx5 drivers to v6.19 (JIRA:RHEL-169057)

• iavf: during POD churn vlan filters may not be added for a vlan interface, spoofchk drops subsequent packets [rhel-9.8.z] (JIRA:RHEL-172993)

• nf_conntrack_sctp: vtag corruption with late INIT in ESTABLISHED state across conntrack zones [rhel-9.8.z] (JIRA:RHEL-178273)

• sched/fair: Skip sched_balance_running cmpxchg when balance is not due [rhel-9.8.z] (JIRA:RHEL-182776)

• [REGRESSION] ISST-Spyre: Jenkins workload causes soft lock warning to appear on screen. Workload hangs. [rhel-9.8.z] (JIRA:RHEL-183183)

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.