The SUSE Linux Enterprise 15 SP4 kernel was updated to receive various security bugfixes.
The following security bugs were fixed:
- CVE-2021-47557: net/sched: sch_ets: do not peek at classes beyond 'nbands' (bsc#1207361 bsc#1225468).
- CVE-2021-47595: net/sched: sch_ets: do not remove idle classes from the round-robin list (bsc#1207361 bsc#1226552).
- CVE-2023-52924: netfilter: nf_tables: do not skip expired elements during walk (bsc#1236821).
- CVE-2023-52925: netfilter: nf_tables: do not fail inserts if duplicate has expired (bsc#1236822).
- CVE-2024-26808: netfilter: nft_chain_filter: handle NETDEV_UNREGISTER for inet/ingress basechain (bsc#1222634).
- CVE-2024-26924: scsi: lpfc: Release hbalock before calling lpfc_worker_wake_up() (bsc#1225820).
- CVE-2024-27397: kabi: place tstamp needed for nftables set in a hole (bsc#1224095).
- CVE-2024-36978: net: sched: sch_multiq: fix possible OOB write in multiq_tune() (bsc#1226514).
- CVE-2024-46800: sch/netem: fix use after free in netem_dequeue (bsc#1230827).
- CVE-2024-53057: net/sched: stop qdisc_tree_reduce_backlog on TC_H_ROOT (bsc#1233551).
- CVE-2024-53125: bpf: sync_linked_regs() must preserve subreg_def (bsc#1234156).
- CVE-2024-53141: netfilter: ipset: add missing range check in bitmap_ip_uadt (bsc#1234381).
- CVE-2024-56770: sch/netem: fix use after free in netem_dequeue (bsc#1235637).
- CVE-2024-57947: netfilter: nf_set_pipapo: fix initial map fill (bsc#1236333).
- CVE-2025-21700: net: sched: Disallow replacing of child qdisc from one parent to another (bsc#1237159).
- CVE-2025-21702: pfifo_tail_enqueue: Drop new packet when sch->limit == 0 (bsc#1237312).
- CVE-2025-21703: netem: Update sch->q.qlen before qdisc_tree_reduce_backlog() (bsc#1237313).
- CVE-2025-21756: vsock: Orphan socket after transport release (bsc#1238876).
- CVE-2025-23141: KVM: x86: Acquire SRCU in KVM_GET_MP_STATE to protect guest memory accesses (bsc#1242782).
- CVE-2025-37752: net_sched: sch_sfq: move the limit validation...