Red Hat Security Advisory: kernel security update

CVE-2025-21999 — kernel: proc: fix UAF in proc_get_inode() CVE-2025-38653 — kernel: proc: use the same treatment to check proc_lseek as ones for proc_read_iter et.al CVE-2025-39766 — kernel: net/sched: Make cake_enqueue return NET_XMIT_CN when past buffer_limit CVE-2025-68366 — kernel: nbd: defer config unlock in nbd_genl_connect CVE-2025-68741 — kernel: scsi: qla2xxx: Fix improper freeing of purex item CVE-2026-23243 — kernel: Linux kernel: Denial of service and memory corruption in RDMA umad CVE-2026-23270 — kernel: Linux kernel: Use-after-free in traffic control (act_ct) may lead to denial of service or privilege escalation CVE-2026-31419 — kernel: Linux kernel: Use-after-free in bonding driver leads to denial of service CVE-2026-43163 — kernel: md/bitmap: fix GPF in write_page caused by resize race