Red Hat Security Advisory: kernel security, bug fix, and enhancement update

CVE-2025-38154 — kernel: Linux kernel: Use-after-free in BPF sockmap can lead to denial of service and privilege escalation CVE-2025-40135 — kernel: ipv6: use RCU in ip6_xmit() CVE-2025-40158 — kernel: ipv6: use RCU in ip6_output() CVE-2025-40170 — kernel: net: use dst_dev_rcu() in sk_setup_caps() CVE-2026-23136 — kernel: Linux kernel: Denial of Service in libceph OSD client due to unreset sparse-read state CVE-2026-31474 — kernel: can: isotp: fix tx.buf use-after-free in isotp_sendmsg() CVE-2026-43116 — kernel: netfilter: ctnetlink: ensure safe access to master conntrack CVE-2026-43501 — kernel: ipv6: rpl: reserve mac_len headroom when recompressed SRH grows CVE-2026-45898 — kernel: RDMA/iwcm: Fix workqueue list corruption by removing work_list CVE-2026-46125 — kernel: wifi: mac80211: remove station if connection prep fails CVE-2026-46227 — kernel: sctp: revalidate list cursor after sctp_sendmsg_to_asoc() in SCTP_SENDALL CVE-2026-46323 — kernel: Linux kernel: Use-After-Free in net/gro due to improper handling of zerocopy skbs CVE-2026-46331 — kernel: net/sched: act_pedit: extend the writable skb range per key