Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP4 RT kernel was updated to fix various security issues The following security issues were fixed: - CVE-2024-46854: net: dpaa: Pad packets to ETH_ZLEN (bsc#1231084). - CVE-2025-21738: ata: libata-sff: Ensure that we cannot write outside the allocated buffer (bsc#1238917). - CVE-2025-40242: gfs2: Fix unlikely race in gdlm_put_lock (bsc#1255075). - CVE-2025-68312: usbnet: Prevents free active kevent (bsc#1255171). - CVE-2025-71066: net/sched: ets: Always remove class from active list before deleting in ets_qdisc_change (bsc#1256645). - CVE-2025-71085: ipv6: BUG() in pskb_expand_head() as part of calipso_skbuff_setattr() (bsc#1256623). - CVE-2025-71112: net: hns3: add VLAN id validation before using (bsc#1256726). - CVE-2026-22999: net/sched: sch_qfq: do not free existing class in qfq_change_class() (bsc#1257236). - CVE-2026-23001: macvlan: fix possible UAF in macvlan_forward_source() (bsc#1257232). - 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). - CVE-2026-23209: macvlan: fix error recovery in macvlan_common_newlink() (bsc#1258518). - CVE-2026-23268: apparmor: fix unprivileged local user can do privileged policy management (bsc#1258850). - CVE-2026-23269: apparmor: validate DFA start states are in bounds in unpack_pdb (bsc#1259857). 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 race between freeing data and fs accessing it (bsc#1258849). - apparmor: fix race on rawdata dereference (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). - net: hv_netvsc: reject RSS hash key programming without RX indirection table (bsc#1257473). - net: tcp: allow zero-window ACK update the window (bsc#1254767). - net: tcp: send zero-window ACK when no memory (bsc#1254767). - scsi: storvsc: Process unsupported MODE_SENSE_10 (bsc#1257296). - tcp: correct handling of extreme memory squeeze (bsc#1254767). - x86/its: Fix crash during dynamic its initialization (bsc#1257771). - x86/modules: Set VM_FLUSH_RESET_PERMS in module_alloc() (bsc#1257771).