SUSE-SU-2026:1563-1

Description of the patch:

The SUSE Linux Enterprise 15 SP4 kernel was updated to fix various security issues

The following security issues were fixed:

• CVE-2025-38234: sched/rt: Fix race in push_rt_task (bsc#1246057).
• CVE-2026-23103: ipvlan: Make the addrs_lock be per port (bsc#1257773).
• CVE-2026-23243: RDMA/umad: Reject negative data_len in ib_umad_write (bsc#1259797).
• CVE-2026-23272: netfilter: nf_tables: unconditionally bump set-nelems before insertion (bsc#1260009).
• CVE-2026-23274: netfilter: xt_IDLETIMER: reject rev0 reuse of ALARM timer labels (bsc#1260005).

The following non security issue was fixed:

• watchdog/perf: properly initialize the turbo mode timestamp and rearm counter (bsc#1256504).