SUSE-SU-2025:4320-1: Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP5 kernel was updated to fix various security issues The following security issues were fixed: - CVE-2022-50327: ACPI: processor: idle: Check acpi_fetch_acpi_dev() return value (bsc#1249859). - CVE-2022-50334: hugetlbfs: fix null-ptr-deref in hugetlbfs_parse_param() (bsc#1249857). - CVE-2022-50490: bpf: Propagate error from htab_lock_bucket() to userspace (bsc#1251164). - CVE-2022-50516: fs: dlm: fix invalid derefence of sb_lvbptr (bsc#1251741). - CVE-2023-53365: ip6mr: Fix skb_under_panic in ip6mr_cache_report() (bsc#1249988). - CVE-2023-53500: xfrm: fix slab-use-after-free in decode_session6 (bsc#1250816). - CVE-2023-53559: ip_vti: fix potential slab-use-after-free in decode_session6 (bsc#1251052). - CVE-2023-53574: wifi: rtw88: delete timer and free skb queue when unloading (bsc#1251222). - CVE-2023-53619: netfilter: conntrack: Avoid nf_ct_helper_hash uses after free (bsc#1251743). - CVE-2023-53673: Bluetooth: hci_event: call disconnect callback before deleting conn (bsc#1251763). - CVE-2023-53705: ipv6: Fix out-of-bounds access in ipv6_find_tlv() (bsc#1252554). - CVE-2025-37885: KVM: x86: Reset IRTE to host control if *new* route isn't postable (bsc#1242960). - CVE-2025-38084: hugetlb: unshare some PMDs when splitting VMAs (bsc#1245498). - CVE-2025-38085: mm/hugetlb: fix huge_pmd_unshare() vs GUP-fast race (bsc#1245499). - CVE-2025-38476: rpl: Fix use-after-free in rpl_do_srh_inline() (bsc#1247317). - CVE-2025-39742: RDMA: hfi1: fix possible divide-by-zero in find_hw_thread_mask() (bsc#1249479). - CVE-2025-39797: xfrm: Duplicate SPI Handling (bsc#1249608). - CVE-2025-39945: cnic: Fix use-after-free bugs in cnic_delete_task (bsc#1251230). - CVE-2025-39967: fbcon: fix integer overflow in fbcon_do_set_font (bsc#1252033). - CVE-2025-39968: i40e: add max boundary check for VF filters (bsc#1252047). - CVE-2025-39973: i40e: add validation for ring_len param (bsc#1252035). - CVE-2025-39978: octeontx2-pf: Fix potential use after free in otx2_tc_add_flow() (bsc#1252069). - CVE-2025-39981: Bluetooth: MGMT: Fix possible UAFs (bsc#1252060). - CVE-2025-40018: ipvs: Defer ip_vs_ftp unregister during netns cleanup (bsc#1252688). - CVE-2025-40044: fs: udf: fix OOB read in lengthAllocDescs handling (bsc#1252785). The following non security issues were fixed: - NFS: remove revoked delegation from server's delegation list (bsc#1246211). - NFSv4: Allow FREE_STATEID to clean up delegations (bsc#1246211). - fbcon: Fix OOB access in font allocation (bsc#1252033) - kabi fix for NFSv4: Allow FREE_STATEID to clean up delegations (bsc#1246211). - kernel-subpackage-spec: Do not doubly-sign modules (bsc#1251930). - mm: avoid unnecessary page fault retires on shared memory types (bsc#1251823). - net: hv_netvsc: fix loss of early receive events from host during channel open (bsc#1252265). - net: mana: Switch to page pool for jumbo frames (bsc#1248754). - net: mana: Use page pool fragments for RX buffers instead of full pages to improve memory efficiency (bsc#1248754). - netfilter: nft_objref: validate objref and objrefmap expressions (bsc#1250237). - rpm/check-for-config-changes: ignore CONFIG_SCHED_PROXY_EXEC, too (bsc#1250946)

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