Security update for the Linux Kernel (Live Patch 21 for SUSE Linux Enterprise 15 SP5)

This update for the SUSE Linux Enterprise kernel 5.14.21-150500.55.88 fixes various security issues The following security issues were fixed: - CVE-2022-50327: ACPI: processor: idle: Check acpi_fetch_acpi_dev() return value (bsc#1254451). - CVE-2022-50409: net: If sock is dead don't access sock's sk_wq in sk_stream_wait_memory (bsc#1250665). - CVE-2022-50490: bpf: Propagate error from htab_lock_bucket() to userspace (bsc#1251165). - CVE-2023-53676: scsi: target: iscsi: Fix buffer overflow in lio_target_nacl_info_show() (bsc#1251787). - CVE-2024-57849: s390/cpum_sf: handle CPU hotplug remove during sampling (bsc#1235815). - CVE-2024-58239: tls: stop recv() if initial process_rx_list gave us non-DATA (bsc#1248615). - CVE-2025-38476: rpl: Fix use-after-free in rpl_do_srh_inline() (bsc#1251203). - CVE-2025-38572: ipv6: reject malicious packets in ipv6_gso_segment() (bsc#1248400). - CVE-2025-38608: bpf, ktls: Fix data corruption when using bpf_msg_pop_data() in ktls (bsc#1248670). - CVE-2025-40204: sctp: Fix MAC comparison to be constant-time (bsc#1253437).