Security update for the Linux Kernel (Live Patch 71 for SUSE Linux Enterprise 12 SP5)

This update for the SUSE Linux Enterprise Kernel 4.12.14-122.269 fixes various security issues The following security issues were fixed: - CVE-2023-53794: cifs: fix session state check in reconnect to avoid use-after-free issue (bsc#1255235). - CVE-2025-39973: i40e: add validation for ring_len param (bsc#1252036). - CVE-2025-40018: ipvs: Defer ip_vs_ftp unregister during netns cleanup (bsc#1252689). - CVE-2025-71120: SUNRPC: svcauth_gss: avoid NULL deref on zero length gss_token in gss_read_proxy_verf (bsc#1256780). - CVE-2026-22999: net/sched: sch_qfq: do not free existing class in qfq_change_class() (bsc#1257238). - CVE-2026-23074: net/sched: Enforce that teql can only be used as root qdisc (bsc#1258051). - CVE-2026-23209: macvlan: fix error recovery in macvlan_common_newlink() (bsc#1258784).