Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP3 kernel was updated to fix 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#1255163). - CVE-2023-53827: Bluetooth: L2CAP: Fix use-after-free in l2cap_disconnect_{req,rsp} (bsc#1255049). - CVE-2025-21738: ata: libata-sff: Ensure that we cannot write outside the allocated buffer (bsc#1238917). - CVE-2025-38375: virtio-net: ensure the received length does not exceed allocated size (bsc#1247177). - CVE-2025-68285: libceph: fix potential use-after-free in have_mon_and_osd_map() (bsc#1255401). - CVE-2025-71066: net/sched: ets: Always remove class from active list before deleting in ets_qdisc_change (bsc#1256645). - CVE-2026-23004: dst: fix races in rt6_uncached_list_del() and rt_del_uncached_list() (bsc#1257231). - CVE-2026-23060: crypto: authencesn - reject too-short AAD (assoclen<8) to match ESP/ESN spec (bsc#1257735). - CVE-2026-23074: net/sched: Enforce that teql can only be used as root qdisc (bsc#1257749). - CVE-2026-23089: ALSA: usb-audio: Fix use-after-free in snd_usb_mixer_free() (bsc#1257790). - CVE-2026-23191: ALSA: aloop: Fix racy access at PCM trigger (bsc#1258395). - CVE-2026-23204: net: add skb_header_pointer_careful() helper (bsc#1258340). The following non security issues were fixed: - apparmor: fix differential encoding verification (bsc#1258849). - apparmor: Fix double free of ns_name in aa_replace_profiles() (bsc#1258849). - apparmor: fix memory leak in verify_header (bsc#1258849). - apparmor: fix missing bounds check on DEFAULT table in verify_dfa() (bsc#1258849). - apparmor: fix side-effect bug in match_char() macro usage (bsc#1258849). - apparmor: fix unprivileged local user can do privileged policy management (bsc#1258849). - apparmor: fix: limit the number of levels of policy namespaces (bsc#1258849). - apparmor: replace recursive profile removal with iterative approach (bsc#1258849). - apparmor: validate DFA start states are in bounds in unpack_pdb (bsc#1258849).