Red Hat Security Advisory: kernel security update

CVE-2025-68183 — kernel: ima: don't clear IMA_DIGSIG flag when setting or removing non-IMA xattr CVE-2026-31613 — kernel: smb: client: fix OOB reads parsing symlink error response CVE-2026-31684 — kernel: net: sched: act_csum: validate nested VLAN headers CVE-2026-43027 — kernel: netfilter: nf_conntrack_helper: pass helper to expect cleanup CVE-2026-43499 — kernel: rtmutex: Use waiter::task instead of current in remove_waiter() CVE-2026-46135 — kernel: nvmet-tcp: fix race between ICReq handling and queue teardown CVE-2026-46189 — kernel: RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path CVE-2026-46209 — kernel: drm/gem: Fix inconsistent plane dimension calculation in drm_gem_fb_init_with_funcs() CVE-2026-53166 — kernel: futex/requeue: Prevent NULL pointer dereference in remove_waiter() on self-deadlock