In the Linux kernel, the following vulnerability has been resolved: nbd: don't allow reconnect after disconnect Following process can cause nbd_config UAF: 1) grab nbd_config temporarily; 2) nbd_genl_disconnect() flush all recv_work() and release the initial reference: nbd_genl_disconnect nbd_disconnect_and_put nbd_disconnect flush_workqueue(nbd->recv_workq) if (test_and_clear_bit(NBD_RT_HAS_CONFIG_REF, ...)) nbd_config_put -> due to step 1), reference is still not zero 3) nbd_genl_reconfigure() queue recv_work() again; nbd_genl_reconfigure config = nbd_get_config_unlocked(nbd) if (!config) -> succeed if (!test_bit(NBD_RT_BOUND, ...)) -> succeed nbd_reconnect_socket queue_work(nbd->recv_workq, &args->work) 4) step 1) release the reference; 5) Finially, recv_work() will trigger UAF: recv_work nbd_config_put(nbd) -> nbd_config is freed atomic_dec(&config->recv_threads) -> UAF Fix the problem by clearing NBD_RT_BOUND in nbd_genl_disconnect(), so that nbd_genl_reconfigure() will fail.

The version of kernel installed on the remote host is prior to 5.10.235-227.919. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.10-2025-088 advisory.

    In the Linux kernel, the following vulnerability has been resolved:

    macsec: fix UAF bug for real_dev (CVE-2022-49390)

    In the Linux kernel, the following vulnerability has been resolved:

    Squashfs: check the inode number is not the invalid value of zero (CVE-2024-26982)

    In the Linux kernel, the following vulnerability has been resolved:

    smb: client: fix UAF in smb2_reconnect_server() (CVE-2024-35870)

    In the Linux kernel, the following vulnerability has been resolved:

    rdma/cxgb4: Prevent potential integer overflow on 32bit (CVE-2024-57973)

    In the Linux kernel, the following vulnerability has been resolved:

    memcg: fix soft lockup in the OOM process (CVE-2024-57977)

    In the Linux kernel, the following vulnerability has been resolved:

    pps: Fix a use-after-free (CVE-2024-57979)

    In the Linux kernel, the following vulnerability has been resolved:

    rtc: pcf85063: fix potential OOB write in PCF85063 NVMEM read (CVE-2024-58069)

    In the Linux kernel, the following vulnerability has been resolved:

    KVM: Explicitly verify target vCPU is online in kvm_get_vcpu() (CVE-2024-58083)

    In the Linux kernel, the following vulnerability has been resolved:

    net: sched: Disallow replacing of child qdisc from one parent to another (CVE-2025-21700)

    In the Linux kernel, the following vulnerability has been resolved:

    ipmr: do not call mr_mfc_uses_dev() for unres entries (CVE-2025-21719)

    In the Linux kernel, the following vulnerability has been resolved:

    nilfs2: handle errors that nilfs_prepare_chunk() may return (CVE-2025-21721)

    In the Linux kernel, the following vulnerability has been resolved:

    nilfs2: do not force clear folio if buffer is referenced (CVE-2025-21722)

    In the Linux kernel, the following vulnerability has been resolved:

    padata: avoid UAF for reorder_work (CVE-2025-21726)

    In the Linux kernel, the following vulnerability has been resolved:

    padata: fix UAF in padata_reorder (CVE-2025-21727)

    In the Linux kernel, the following vulnerability has been resolved:

    bpf: Send signals asynchronously if !preemptible (CVE-2025-21728)

    In the Linux kernel, the following vulnerability has been resolved:

    nbd: don't allow reconnect after disconnect (CVE-2025-21731)

    In the Linux kernel, the following vulnerability has been resolved:

    btrfs: fix use-after-free when attempting to join an aborted transaction (CVE-2025-21753)

    In the Linux kernel, the following vulnerability has been resolved:

    vsock: Keep the binding until socket destruction (CVE-2025-21756)

    In the Linux kernel, the following vulnerability has been resolved:

    ndisc: extend RCU protection in ndisc_send_skb() (CVE-2025-21760)

    In the Linux kernel, the following vulnerability has been resolved:

    openvswitch: use RCU protection in ovs_vport_cmd_fill_info() (CVE-2025-21761)

    In the Linux kernel, the following vulnerability has been resolved:

    arp: use RCU protection in arp_xmit() (CVE-2025-21762)

    In the Linux kernel, the following vulnerability has been resolved:

    neighbour: use RCU protection in __neigh_notify() (CVE-2025-21763)

    In the Linux kernel, the following vulnerability has been resolved:

    ndisc: use RCU protection in ndisc_alloc_skb() (CVE-2025-21764)

    In the Linux kernel, the following vulnerability has been resolved:

    clocksource: Use migrate_disable() to avoid calling get_random_u32() in atomic context (CVE-2025-21767)

    In the Linux kernel, the following vulnerability has been resolved:

    arm64: cacheinfo: Avoid out-of-bounds write to cacheinfo array (CVE-2025-21785)

    In the Linux kernel, the following vulnerability has been resolved:

    team: better TEAM_OPTION_TYPE_STRING validation (CVE-2025-21787)

    In the Linux kernel, the following vulnerability has been resolved:

    vrf: use RCU protection in l3mdev_l3_out() (CVE-2025-21791)

    In the Linux kernel, the following vulnerability has been resolved:

    NFSD: fix hang in nfsd4_shutdown_callback (CVE-2025-21795)

    In the Linux kernel, the following vulnerability has been resolved:

    nfsd: clear acl_access/acl_default after releasing them (CVE-2025-21796)

    In the Linux kernel, the following vulnerability has been resolved:

    nilfs2: protect access to buffers with no active references (CVE-2025-21811)

    In the Linux kernel, the following vulnerability has been resolved:

    geneve: Fix use-after-free in geneve_find_dev(). (CVE-2025-21858)

    In the Linux kernel, the following vulnerability has been resolved:

    net: gso: fix ownership in __udp_gso_segment (CVE-2025-21926)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of kernel installed on the remote host is prior to 4.14.355-276.618. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2025-2826 advisory.

    In the Linux kernel, the following vulnerability has been resolved:

    block, bfq: don't move oom_bfqq (CVE-2022-49179)

    In the Linux kernel, the following vulnerability has been resolved:

    macsec: fix UAF bug for real_dev (CVE-2022-49390)

    In the Linux kernel, the following vulnerability has been resolved:

    block: Fix handling of offline queues in blk_mq_alloc_request_hctx() (CVE-2022-49720)

    In the Linux kernel, the following vulnerability has been resolved:

    ext4: aovid use-after-free in ext4_ext_insert_extent() (CVE-2024-49883)

    In the Linux kernel, the following vulnerability has been resolved:

    slip: make slhc_remember() more robust against malicious packets (CVE-2024-50033)

    In the Linux kernel, the following vulnerability has been resolved:

    net/sched: stop qdisc_tree_reduce_backlog on TC_H_ROOT (CVE-2024-53057)

    In the Linux kernel, the following vulnerability has been resolved:

    hv_sock: Initializing vsk->trans to NULL to prevent a dangling pointer (CVE-2024-53103)

    In the Linux kernel, the following vulnerability has been resolved:

    netfilter: x_tables: fix LED ID check in led_tg_check() (CVE-2024-56650)

    In the Linux kernel, the following vulnerability has been resolved:

    net: defer final 'struct net' free in netns dismantle (CVE-2024-56658)

    In the Linux kernel, the following vulnerability has been resolved:

    pps: Fix a use-after-free (CVE-2024-57979)

    In the Linux kernel, the following vulnerability has been resolved:

    nbd: don't allow reconnect after disconnect (CVE-2025-21731)

    In the Linux kernel, the following vulnerability has been resolved:

    btrfs: fix use-after-free when attempting to join an aborted transaction (CVE-2025-21753)

    In the Linux kernel, the following vulnerability has been resolved:

    ndisc: extend RCU protection in ndisc_send_skb() (CVE-2025-21760)

    In the Linux kernel, the following vulnerability has been resolved:

    arp: use RCU protection in arp_xmit() (CVE-2025-21762)

    In the Linux kernel, the following vulnerability has been resolved:

    ndisc: use RCU protection in ndisc_alloc_skb() (CVE-2025-21764)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:1180-1 advisory.

    The SUSE Linux Enterprise 15 SP6 kernel was updated to receive various security bugfixes.

    The following security bugs were fixed:


    - CVE-2023-52927: netfilter: allow exp not to be removed in nf_ct_find_expectation (bsc#1239644).
    - CVE-2024-35910: tcp: properly terminate timers for kernel sockets (bsc#1224489).
    - CVE-2024-41005: netpoll: Fix race condition in netpoll_owner_active (bsc#1227858).
    - CVE-2024-46782: ila: call nf_unregister_net_hooks() sooner (bsc#1230769).
    - CVE-2024-47408: net/smc: check smcd_v2_ext_offset when receiving proposal msg (bsc#1235711).
    - CVE-2024-47794: kABI: bpf: Prevent tailcall infinite loop caused by freplace kABI workaround     (bsc#1235712).
    - CVE-2024-49571: net/smc: check iparea_offset and ipv6_prefixes_cnt when receiving proposal msg     (bsc#1235733).
    - CVE-2024-49940: kABI fix for l2tp: prevent possible tunnel refcount underflow (bsc#1232812).
    - CVE-2024-50056: usb: gadget: uvc: Fix ERR_PTR dereference in uvc_v4l2.c (bsc#1232389).
    - CVE-2024-50140: net: sched: use RCU read-side critical section in taprio_dump() (bsc#1233060).
    - CVE-2024-53057: net/sched: stop qdisc_tree_reduce_backlog on TC_H_ROOT (bsc#1233551).
    - CVE-2024-53140: netlink: terminate outstanding dump on socket close (bsc#1234222).
    - CVE-2024-53680: ipvs: fix UB due to uninitialized stack access in ip_vs_protocol_init() (bsc#1235715).
    - CVE-2024-54683: netfilter: IDLETIMER: Fix for possible ABBA deadlock (bsc#1235729).
    - CVE-2024-56638: kABI fix for 'netfilter: nft_inner: incorrect percpu area handling under softirq'     (bsc#1235524).
    - CVE-2024-56640: net/smc: fix LGR and link use-after-free issue (bsc#1235436).
    - CVE-2024-56702: bpf: Add tracepoints with null-able arguments (bsc#1235501).
    - CVE-2024-56703: ipv6: Fix soft lockups in fib6_select_path under high next hop churn (bsc#1235455).
    - CVE-2024-56718: net/smc: protect link down work from execute after lgr freed (bsc#1235589).
    - CVE-2024-56719: net: stmmac: fix TSO DMA API usage causing oops (bsc#1235591).
    - CVE-2024-56751: ipv6: release nexthop on device removal (bsc#1234936).
    - CVE-2024-56758: btrfs: check folio mapping after unlock in relocate_one_folio() (bsc#1235621).
    - CVE-2024-56770: net/sched: netem: account for backlog updates from child qdisc (bsc#1235637).
    - CVE-2024-57900: ila: serialize calls to nf_register_net_hooks() (bsc#1235973).
    - CVE-2024-57947: netfilter: nf_set_pipapo: fix initial map fill (bsc#1236333).
    - CVE-2024-57974: udp: Deal with race between UDP socket address change and rehash (bsc#1238532).
    - CVE-2024-57979: kABI workaround for pps changes (bsc#1238521).
    - CVE-2024-57996: net_sched: sch_sfq: do not allow 1 packet limit (bsc#1239076).
    - CVE-2024-58012: ASoC: SOF: Intel: hda-dai: Ensure DAI widget is valid during params (bsc#1239104).
    - CVE-2024-58019: nvkm/gsp: correctly advance the read pointer of GSP message queue (bsc#1238997).
    - CVE-2024-58083: KVM: Explicitly verify target vCPU is online in kvm_get_vcpu() (bsc#1239036).
    - CVE-2025-21635: rds: sysctl: rds_tcp_{rcv,snd}buf: avoid using current->nsproxy (bsc#1236111).
    - CVE-2025-21659: netdev: prevent accessing NAPI instances from another namespace (bsc#1236206).
    - CVE-2025-21693: mm: zswap: properly synchronize freeing resources during CPU hotunplug (bsc#1237029).
    - CVE-2025-21701: net: avoid race between device unregistration and ethnl ops (bsc#1237164).
    - CVE-2025-21703: netem: Update sch->q.qlen before qdisc_tree_reduce_backlog() (bsc#1237313).
    - CVE-2025-21706: mptcp: pm: only set fullmesh for subflow endp (bsc#1238528).
    - CVE-2025-21733: tracing/osnoise: Fix resetting of tracepoints (bsc#1238494).
    - CVE-2025-21739: kABI: ufshcd: add ufshcd_dealloc_host back (bsc#1238506).
    - CVE-2025-21753: btrfs: fix use-after-free when attempting to join an aborted transaction (bsc#1237875).
    - CVE-2025-21754: btrfs: fix assertion failure when splitting ordered extent after transaction abort     (bsc#1238496).
    - CVE-2025-21759: ipv6: mcast: extend RCU protection in igmp6_send() (bsc#1238738).
    - CVE-2025-21760: ndisc: extend RCU protection in ndisc_send_skb() (bsc#1238763).
    - CVE-2025-21761: openvswitch: use RCU protection in ovs_vport_cmd_fill_info() (bsc#1238775).
    - CVE-2025-21762: arp: use RCU protection in arp_xmit() (bsc#1238780).
    - CVE-2025-21763: neighbour: use RCU protection in __neigh_notify() (bsc#1237897).
    - CVE-2025-21765: ipv6: use RCU protection in ip6_default_advmss() (bsc#1237906).
    - CVE-2025-21766: ipv4: use RCU protection in __ip_rt_update_pmtu() (bsc#1238754).
    - CVE-2025-21791: vrf: use RCU protection in l3mdev_l3_out() (bsc#1238512).
    - CVE-2025-21825: selftests/bpf: Add test case for the freeing of bpf_timer (bsc#1238971).
    - CVE-2025-21844: smb: client: Add check for next_buffer in receive_encrypted_standard() (bsc#1239512).
    - CVE-2025-21848: nfp: bpf: Add check for nfp_app_ctrl_msg_alloc() (bsc#1239479).
    - CVE-2025-21856: s390/ism: add release function for struct device (bsc#1239486).
    - CVE-2025-21857: net/sched: cls_api: fix error handling causing NULL dereference (bsc#1239478).
    - CVE-2025-21861: mm/migrate_device: do not add folio to be freed to LRU in migrate_device_finalize()     (bsc#1239483).
    - CVE-2025-21862: drop_monitor: fix incorrect initialization order (bsc#1239474).
    - CVE-2025-21864: kABI fix for tcp: drop secpath at the same time as we currently drop (bsc#1239482).
    - CVE-2025-21865: gtp: Suppress list corruption splat in gtp_net_exit_batch_rtnl() (bsc#1239481).
    - CVE-2025-21870: ASoC: SOF: ipc4-topology: Harden loops for looking up ALH copiers (bsc#1240191).
    - CVE-2025-21871: tee: optee: Fix supplicant wait loop (bsc#1240183).
    - CVE-2025-21883: ice: Fix deinitializing VF in error path (bsc#1240189).
    - CVE-2025-21890: idpf: fix checksums set in idpf_rx_rsc() (bsc#1240173).
    - CVE-2025-21891: ipvlan: ensure network headers are in skb linear part (bsc#1240186).


Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:1178-1 advisory.

    The SUSE Linux Enterprise 15 SP6 RT kernel was updated to receive various security bugfixes.

    The following security bugs were fixed:

    - CVE-2023-52927: netfilter: allow exp not to be removed in nf_ct_find_expectation (bsc#1239644).
    - CVE-2024-35910: tcp: properly terminate timers for kernel sockets (bsc#1224489).
    - CVE-2024-41005: netpoll: Fix race condition in netpoll_owner_active (bsc#1227858).
    - CVE-2024-46782: ila: call nf_unregister_net_hooks() sooner (bsc#1230769).
    - CVE-2024-47408: net/smc: check smcd_v2_ext_offset when receiving proposal msg (bsc#1235711).
    - CVE-2024-47794: kABI: bpf: Prevent tailcall infinite loop caused by freplace kABI workaround     (bsc#1235712).
    - CVE-2024-49571: net/smc: check iparea_offset and ipv6_prefixes_cnt when receiving proposal msg     (bsc#1235733).
    - CVE-2024-49940: kABI fix for l2tp: prevent possible tunnel refcount underflow (bsc#1232812).
    - CVE-2024-50056: usb: gadget: uvc: Fix ERR_PTR dereference in uvc_v4l2.c (bsc#1232389).
    - CVE-2024-50140: net: sched: use RCU read-side critical section in taprio_dump() (bsc#1233060).
    - CVE-2024-53057: net/sched: stop qdisc_tree_reduce_backlog on TC_H_ROOT (bsc#1233551).
    - CVE-2024-53140: netlink: terminate outstanding dump on socket close (bsc#1234222).
    - CVE-2024-53680: ipvs: fix UB due to uninitialized stack access in ip_vs_protocol_init() (bsc#1235715).
    - CVE-2024-54683: netfilter: IDLETIMER: Fix for possible ABBA deadlock (bsc#1235729).
    - CVE-2024-56638: kABI fix for 'netfilter: nft_inner: incorrect percpu area handling under softirq'     (bsc#1235524).
    - CVE-2024-56640: net/smc: fix LGR and link use-after-free issue (bsc#1235436).
    - CVE-2024-56702: bpf: Add tracepoints with null-able arguments (bsc#1235501).
    - CVE-2024-56703: ipv6: Fix soft lockups in fib6_select_path under high next hop churn (bsc#1235455).
    - CVE-2024-56718: net/smc: protect link down work from execute after lgr freed (bsc#1235589).
    - CVE-2024-56719: net: stmmac: fix TSO DMA API usage causing oops (bsc#1235591).
    - CVE-2024-56751: ipv6: release nexthop on device removal (bsc#1234936).
    - CVE-2024-56758: btrfs: check folio mapping after unlock in relocate_one_folio() (bsc#1235621).
    - CVE-2024-56770: net/sched: netem: account for backlog updates from child qdisc (bsc#1235637).
    - CVE-2024-57900: ila: serialize calls to nf_register_net_hooks() (bsc#1235973).
    - CVE-2024-57947: netfilter: nf_set_pipapo: fix initial map fill (bsc#1236333).
    - CVE-2024-57974: udp: Deal with race between UDP socket address change and rehash (bsc#1238532).
    - CVE-2024-57979: kABI workaround for pps changes (bsc#1238521).
    - CVE-2024-57996: net_sched: sch_sfq: do not allow 1 packet limit (bsc#1239076).
    - CVE-2024-58012: ASoC: SOF: Intel: hda-dai: Ensure DAI widget is valid during params (bsc#1239104).
    - CVE-2024-58019: nvkm/gsp: correctly advance the read pointer of GSP message queue (bsc#1238997).
    - CVE-2024-58083: KVM: Explicitly verify target vCPU is online in kvm_get_vcpu() (bsc#1239036).
    - CVE-2025-21635: rds: sysctl: rds_tcp_{rcv,snd}buf: avoid using current->nsproxy (bsc#1236111).
    - CVE-2025-21659: netdev: prevent accessing NAPI instances from another namespace (bsc#1236206).
    - CVE-2025-21693: mm: zswap: properly synchronize freeing resources during CPU hotunplug (bsc#1237029).
    - CVE-2025-21701: net: avoid race between device unregistration and ethnl ops (bsc#1237164).
    - CVE-2025-21703: netem: Update sch->q.qlen before qdisc_tree_reduce_backlog() (bsc#1237313).
    - CVE-2025-21706: mptcp: pm: only set fullmesh for subflow endp (bsc#1238528).
    - CVE-2025-21733: tracing/osnoise: Fix resetting of tracepoints (bsc#1238494).
    - CVE-2025-21739: kABI: ufshcd: add ufshcd_dealloc_host back (bsc#1238506).
    - CVE-2025-21753: btrfs: fix use-after-free when attempting to join an aborted transaction (bsc#1237875).
    - CVE-2025-21754: btrfs: fix assertion failure when splitting ordered extent after transaction abort     (bsc#1238496).
    - CVE-2025-21759: ipv6: mcast: extend RCU protection in igmp6_send() (bsc#1238738).
    - CVE-2025-21760: ndisc: extend RCU protection in ndisc_send_skb() (bsc#1238763).
    - CVE-2025-21761: openvswitch: use RCU protection in ovs_vport_cmd_fill_info() (bsc#1238775).
    - CVE-2025-21762: arp: use RCU protection in arp_xmit() (bsc#1238780).
    - CVE-2025-21763: neighbour: use RCU protection in __neigh_notify() (bsc#1237897).
    - CVE-2025-21765: ipv6: use RCU protection in ip6_default_advmss() (bsc#1237906).
    - CVE-2025-21766: ipv4: use RCU protection in __ip_rt_update_pmtu() (bsc#1238754).
    - CVE-2025-21791: vrf: use RCU protection in l3mdev_l3_out() (bsc#1238512).
    - CVE-2025-21825: selftests/bpf: Add test case for the freeing of bpf_timer (bsc#1238971).
    - CVE-2025-21844: smb: client: Add check for next_buffer in receive_encrypted_standard() (bsc#1239512).
    - CVE-2025-21848: nfp: bpf: Add check for nfp_app_ctrl_msg_alloc() (bsc#1239479).
    - CVE-2025-21856: s390/ism: add release function for struct device (bsc#1239486).
    - CVE-2025-21857: net/sched: cls_api: fix error handling causing NULL dereference (bsc#1239478).
    - CVE-2025-21861: mm/migrate_device: do not add folio to be freed to LRU in migrate_device_finalize()     (bsc#1239483).
    - CVE-2025-21862: drop_monitor: fix incorrect initialization order (bsc#1239474).
    - CVE-2025-21864: kABI fix for tcp: drop secpath at the same time as we currently drop (bsc#1239482).
    - CVE-2025-21865: gtp: Suppress list corruption splat in gtp_net_exit_batch_rtnl() (bsc#1239481).
    - CVE-2025-21870: ASoC: SOF: ipc4-topology: Harden loops for looking up ALH copiers (bsc#1240191).
    - CVE-2025-21871: tee: optee: Fix supplicant wait loop (bsc#1240183).
    - CVE-2025-21883: ice: Fix deinitializing VF in error path (bsc#1240189).
    - CVE-2025-21890: idpf: fix checksums set in idpf_rx_rsc() (bsc#1240173).
    - CVE-2025-21891: ipvlan: ensure network headers are in skb linear part (bsc#1240186).


Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:1177-1 advisory.

    The SUSE Linux Enterprise 15 SP6 Azure kernel was updated to receive various security bugfixes.

    The following security bugs were fixed:

    - CVE-2023-52927: netfilter: allow exp not to be removed in nf_ct_find_expectation (bsc#1239644).
    - CVE-2024-35910: tcp: properly terminate timers for kernel sockets (bsc#1224489).
    - CVE-2024-41005: netpoll: Fix race condition in netpoll_owner_active (bsc#1227858).
    - CVE-2024-46782: ila: call nf_unregister_net_hooks() sooner (bsc#1230769).
    - CVE-2024-47408: net/smc: check smcd_v2_ext_offset when receiving proposal msg (bsc#1235711).
    - CVE-2024-47794: kABI: bpf: Prevent tailcall infinite loop caused by freplace kABI workaround     (bsc#1235712).
    - CVE-2024-49571: net/smc: check iparea_offset and ipv6_prefixes_cnt when receiving proposal msg     (bsc#1235733).
    - CVE-2024-49940: kABI fix for l2tp: prevent possible tunnel refcount underflow (bsc#1232812).
    - CVE-2024-50056: usb: gadget: uvc: Fix ERR_PTR dereference in uvc_v4l2.c (bsc#1232389).
    - CVE-2024-50140: net: sched: use RCU read-side critical section in taprio_dump() (bsc#1233060).
    - CVE-2024-53057: net/sched: stop qdisc_tree_reduce_backlog on TC_H_ROOT (bsc#1233551).
    - CVE-2024-53140: netlink: terminate outstanding dump on socket close (bsc#1234222).
    - CVE-2024-53680: ipvs: fix UB due to uninitialized stack access in ip_vs_protocol_init() (bsc#1235715).
    - CVE-2024-54683: netfilter: IDLETIMER: Fix for possible ABBA deadlock (bsc#1235729).
    - CVE-2024-56638: kABI fix for 'netfilter: nft_inner: incorrect percpu area handling under softirq'     (bsc#1235524).
    - CVE-2024-56640: net/smc: fix LGR and link use-after-free issue (bsc#1235436).
    - CVE-2024-56702: bpf: Add tracepoints with null-able arguments (bsc#1235501).
    - CVE-2024-56703: ipv6: Fix soft lockups in fib6_select_path under high next hop churn (bsc#1235455).
    - CVE-2024-56718: net/smc: protect link down work from execute after lgr freed (bsc#1235589).
    - CVE-2024-56719: net: stmmac: fix TSO DMA API usage causing oops (bsc#1235591).
    - CVE-2024-56751: ipv6: release nexthop on device removal (bsc#1234936).
    - CVE-2024-56758: btrfs: check folio mapping after unlock in relocate_one_folio() (bsc#1235621).
    - CVE-2024-56770: net/sched: netem: account for backlog updates from child qdisc (bsc#1235637).
    - CVE-2024-57900: ila: serialize calls to nf_register_net_hooks() (bsc#1235973).
    - CVE-2024-57947: netfilter: nf_set_pipapo: fix initial map fill (bsc#1236333).
    - CVE-2024-57974: udp: Deal with race between UDP socket address change and rehash (bsc#1238532).
    - CVE-2024-57996: net_sched: sch_sfq: do not allow 1 packet limit (bsc#1239076).
    - CVE-2024-58012: ASoC: SOF: Intel: hda-dai: Ensure DAI widget is valid during params (bsc#1239104).
    - CVE-2024-58019: nvkm/gsp: correctly advance the read pointer of GSP message queue (bsc#1238997).
    - CVE-2024-58083: KVM: Explicitly verify target vCPU is online in kvm_get_vcpu() (bsc#1239036).
    - CVE-2025-21635: rds: sysctl: rds_tcp_{rcv,snd}buf: avoid using current->nsproxy (bsc#1236111).
    - CVE-2025-21659: netdev: prevent accessing NAPI instances from another namespace (bsc#1236206).
    - CVE-2025-21693: mm: zswap: properly synchronize freeing resources during CPU hotunplug (bsc#1237029).
    - CVE-2025-21701: net: avoid race between device unregistration and ethnl ops (bsc#1237164).
    - CVE-2025-21703: netem: Update sch->q.qlen before qdisc_tree_reduce_backlog() (bsc#1237313).
    - CVE-2025-21706: mptcp: pm: only set fullmesh for subflow endp (bsc#1238528).
    - CVE-2025-21739: kABI: ufshcd: add ufshcd_dealloc_host back (bsc#1238506).
    - CVE-2025-21753: btrfs: fix use-after-free when attempting to join an aborted transaction (bsc#1237875).
    - CVE-2025-21759: ipv6: mcast: extend RCU protection in igmp6_send() (bsc#1238738).
    - CVE-2025-21760: ndisc: extend RCU protection in ndisc_send_skb() (bsc#1238763).
    - CVE-2025-21761: openvswitch: use RCU protection in ovs_vport_cmd_fill_info() (bsc#1238775).
    - CVE-2025-21762: arp: use RCU protection in arp_xmit() (bsc#1238780).
    - CVE-2025-21763: neighbour: use RCU protection in __neigh_notify() (bsc#1237897).
    - CVE-2025-21765: ipv6: use RCU protection in ip6_default_advmss() (bsc#1237906).
    - CVE-2025-21766: ipv4: use RCU protection in __ip_rt_update_pmtu() (bsc#1238754).
    - CVE-2025-21791: vrf: use RCU protection in l3mdev_l3_out() (bsc#1238512).
    - CVE-2025-21825: selftests/bpf: Add test case for the freeing of bpf_timer (bsc#1238971).
    - CVE-2025-21844: smb: client: Add check for next_buffer in receive_encrypted_standard() (bsc#1239512).
    - CVE-2025-21848: nfp: bpf: Add check for nfp_app_ctrl_msg_alloc() (bsc#1239479).
    - CVE-2025-21856: s390/ism: add release function for struct device (bsc#1239486).
    - CVE-2025-21857: net/sched: cls_api: fix error handling causing NULL dereference (bsc#1239478).
    - CVE-2025-21861: mm/migrate_device: do not add folio to be freed to LRU in migrate_device_finalize()     (bsc#1239483).
    - CVE-2025-21862: drop_monitor: fix incorrect initialization order (bsc#1239474).
    - CVE-2025-21864: kABI fix for tcp: drop secpath at the same time as we currently drop (bsc#1239482).
    - CVE-2025-21865: gtp: Suppress list corruption splat in gtp_net_exit_batch_rtnl() (bsc#1239481).
    - CVE-2025-21870: ASoC: SOF: ipc4-topology: Harden loops for looking up ALH copiers (bsc#1240191).
    - CVE-2025-21871: tee: optee: Fix supplicant wait loop (bsc#1240183).
    - CVE-2025-21883: ice: Fix deinitializing VF in error path (bsc#1240189).
    - CVE-2025-21890: idpf: fix checksums set in idpf_rx_rsc() (bsc#1240173).
    - CVE-2025-21891: ipvlan: ensure network headers are in skb linear part (bsc#1240186).


Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of kernel installed on the remote host is prior to 5.4.291-206.400. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.4-2025-097 advisory.

    In the Linux kernel, the following vulnerability has been resolved:

    Squashfs: check the inode number is not the invalid value of zero (CVE-2024-26982)

    In the Linux kernel, the following vulnerability has been resolved:

    smb: client: fix UAF in smb2_reconnect_server() (CVE-2024-35870)

    In the Linux kernel, the following vulnerability has been resolved:

    pps: Fix a use-after-free (CVE-2024-57979)

    In the Linux kernel, the following vulnerability has been resolved:

    rtc: pcf85063: fix potential OOB write in PCF85063 NVMEM read (CVE-2024-58069)

    In the Linux kernel, the following vulnerability has been resolved:

    KVM: Explicitly verify target vCPU is online in kvm_get_vcpu() (CVE-2024-58083)

    In the Linux kernel, the following vulnerability has been resolved:

    sched: sch_cake: add bounds checks to host bulk flow fairness counts (CVE-2025-21647)

    In the Linux kernel, the following vulnerability has been resolved:

    net: sched: Disallow replacing of child qdisc from one parent to another (CVE-2025-21700)

    In the Linux kernel, the following vulnerability has been resolved:

    pfifo_tail_enqueue: Drop new packet when sch->limit == 0 (CVE-2025-21702)

    In the Linux kernel, the following vulnerability has been resolved:

    nilfs2: do not force clear folio if buffer is referenced (CVE-2025-21722)

    In the Linux kernel, the following vulnerability has been resolved:

    nbd: don't allow reconnect after disconnect (CVE-2025-21731)

    In the Linux kernel, the following vulnerability has been resolved:

    btrfs: fix use-after-free when attempting to join an aborted transaction (CVE-2025-21753)

    In the Linux kernel, the following vulnerability has been resolved:

    ndisc: extend RCU protection in ndisc_send_skb() (CVE-2025-21760)

    In the Linux kernel, the following vulnerability has been resolved:

    openvswitch: use RCU protection in ovs_vport_cmd_fill_info() (CVE-2025-21761)

    In the Linux kernel, the following vulnerability has been resolved:

    arp: use RCU protection in arp_xmit() (CVE-2025-21762)

    In the Linux kernel, the following vulnerability has been resolved:

    neighbour: use RCU protection in __neigh_notify() (CVE-2025-21763)

    In the Linux kernel, the following vulnerability has been resolved:

    ndisc: use RCU protection in ndisc_alloc_skb() (CVE-2025-21764)

    In the Linux kernel, the following vulnerability has been resolved:

    arm64: cacheinfo: Avoid out-of-bounds write to cacheinfo array (CVE-2025-21785)

    In the Linux kernel, the following vulnerability has been resolved:

    vrf: use RCU protection in l3mdev_l3_out() (CVE-2025-21791)

    In the Linux kernel, the following vulnerability has been resolved:

    nilfs2: protect access to buffers with no active references (CVE-2025-21811)

    In the Linux kernel, the following vulnerability has been resolved:

    geneve: Fix use-after-free in geneve_find_dev(). (CVE-2025-21858)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2025-915 advisory.

    In the Linux kernel, the following vulnerability has been resolved:

    Squashfs: check the inode number is not the invalid value of zero (CVE-2024-26982)

    In the Linux kernel, the following vulnerability has been resolved:

    block, bfq: fix bfqq uaf in bfq_limit_depth() (CVE-2024-53166)

    In the Linux kernel, the following vulnerability has been resolved:

    cachefiles: Fix NULL pointer dereference in object->file (CVE-2024-56549)

    In the Linux kernel, the following vulnerability has been resolved:

    pps: Fix a use-after-free (CVE-2024-57979)

    In the Linux kernel, the following vulnerability has been resolved:

    net: sched: Disallow replacing of child qdisc from one parent to another (CVE-2025-21700)

    In the Linux kernel, the following vulnerability has been resolved:

    net: avoid race between device unregistration and ethnl ops (CVE-2025-21701)

    In the Linux kernel, the following vulnerability has been resolved:

    padata: avoid UAF for reorder_work (CVE-2025-21726)

    In the Linux kernel, the following vulnerability has been resolved:

    padata: fix UAF in padata_reorder (CVE-2025-21727)

    In the Linux kernel, the following vulnerability has been resolved:

    nbd: don't allow reconnect after disconnect (CVE-2025-21731)

    In the Linux kernel, the following vulnerability has been resolved:

    btrfs: fix use-after-free when attempting to join an aborted transaction (CVE-2025-21753)

    In the Linux kernel, the following vulnerability has been resolved:

    vsock: Keep the binding until socket destruction (CVE-2025-21756)

    In the Linux kernel, the following vulnerability has been resolved:

    ipv6: mcast: add RCU protection to mld_newpack() (CVE-2025-21758)

    In the Linux kernel, the following vulnerability has been resolved:

    ndisc: extend RCU protection in ndisc_send_skb() (CVE-2025-21760)

    In the Linux kernel, the following vulnerability has been resolved:

    openvswitch: use RCU protection in ovs_vport_cmd_fill_info() (CVE-2025-21761)

    In the Linux kernel, the following vulnerability has been resolved:

    arp: use RCU protection in arp_xmit() (CVE-2025-21762)

    In the Linux kernel, the following vulnerability has been resolved:

    neighbour: use RCU protection in __neigh_notify() (CVE-2025-21763)

    In the Linux kernel, the following vulnerability has been resolved:

    ndisc: use RCU protection in ndisc_alloc_skb() (CVE-2025-21764)

    In the Linux kernel, the following vulnerability has been resolved:

    vrf: use RCU protection in l3mdev_l3_out() (CVE-2025-21791)

    In the Linux kernel, the following vulnerability has been resolved:

    nfsd: clear acl_access/acl_default after releasing them (CVE-2025-21796)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of kernel installed on the remote host is prior to 5.15.179-121.185. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.15-2025-069 advisory.

    In the Linux kernel, the following vulnerability has been resolved:

    Squashfs: check the inode number is not the invalid value of zero (CVE-2024-26982)

    In the Linux kernel, the following vulnerability has been resolved:

    KVM: x86: Acquire kvm->srcu when handling KVM_SET_VCPU_EVENTS (CVE-2024-46830)

    In the Linux kernel, the following vulnerability has been resolved:

    pps: Fix a use-after-free (CVE-2024-57979)

    In the Linux kernel, the following vulnerability has been resolved:

    KVM: Explicitly verify target vCPU is online in kvm_get_vcpu() (CVE-2024-58083)

    In the Linux kernel, the following vulnerability has been resolved:

    net: sched: Disallow replacing of child qdisc from one parent to another (CVE-2025-21700)

    In the Linux kernel, the following vulnerability has been resolved:

    net: avoid race between device unregistration and ethnl ops (CVE-2025-21701)

    In the Linux kernel, the following vulnerability has been resolved:

    padata: avoid UAF for reorder_work (CVE-2025-21726)

    In the Linux kernel, the following vulnerability has been resolved:

    padata: fix UAF in padata_reorder (CVE-2025-21727)

    In the Linux kernel, the following vulnerability has been resolved:

    nbd: don't allow reconnect after disconnect (CVE-2025-21731)

    In the Linux kernel, the following vulnerability has been resolved:

    btrfs: fix use-after-free when attempting to join an aborted transaction (CVE-2025-21753)

    In the Linux kernel, the following vulnerability has been resolved:

    vsock: Keep the binding until socket destruction (CVE-2025-21756)

    In the Linux kernel, the following vulnerability has been resolved:

    ipv6: mcast: add RCU protection to mld_newpack() (CVE-2025-21758)

    In the Linux kernel, the following vulnerability has been resolved:

    ndisc: extend RCU protection in ndisc_send_skb() (CVE-2025-21760)

    In the Linux kernel, the following vulnerability has been resolved:

    openvswitch: use RCU protection in ovs_vport_cmd_fill_info() (CVE-2025-21761)

    In the Linux kernel, the following vulnerability has been resolved:

    arp: use RCU protection in arp_xmit() (CVE-2025-21762)

    In the Linux kernel, the following vulnerability has been resolved:

    neighbour: use RCU protection in __neigh_notify() (CVE-2025-21763)

    In the Linux kernel, the following vulnerability has been resolved:

    ndisc: use RCU protection in ndisc_alloc_skb() (CVE-2025-21764)

    In the Linux kernel, the following vulnerability has been resolved:

    arm64: cacheinfo: Avoid out-of-bounds write to cacheinfo array (CVE-2025-21785)

    In the Linux kernel, the following vulnerability has been resolved:

    vrf: use RCU protection in l3mdev_l3_out() (CVE-2025-21791)

    In the Linux kernel, the following vulnerability has been resolved:

    nfsd: clear acl_access/acl_default after releasing them (CVE-2025-21796)

    In the Linux kernel, the following vulnerability has been resolved:

    geneve: Fix use-after-free in geneve_find_dev(). (CVE-2025-21858)

    In the Linux kernel, the following vulnerability has been resolved:

    ovl: fix UAF in ovl_dentry_update_reval by moving dput() in ovl_link_up (CVE-2025-21887)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4102 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-4102-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                        Ben Hutchings     March 31, 2025                                https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : linux-6.1     Version        : 6.1.129-1~deb11u1     CVE ID         : CVE-2024-26596 CVE-2024-40945 CVE-2024-42069 CVE-2024-42122                      CVE-2024-45001 CVE-2024-47726 CVE-2024-49989 CVE-2024-50061                      CVE-2024-54458 CVE-2024-56549 CVE-2024-57834 CVE-2024-57973                      CVE-2024-57978 CVE-2024-57979 CVE-2024-57980 CVE-2024-57981                      CVE-2024-57986 CVE-2024-57993 CVE-2024-57996 CVE-2024-57997                      CVE-2024-57998 CVE-2024-58001 CVE-2024-58007 CVE-2024-58009                      CVE-2024-58010 CVE-2024-58011 CVE-2024-58013 CVE-2024-58014                      CVE-2024-58016 CVE-2024-58017 CVE-2024-58020 CVE-2024-58034                      CVE-2024-58051 CVE-2024-58052 CVE-2024-58054 CVE-2024-58055                      CVE-2024-58056 CVE-2024-58058 CVE-2024-58061 CVE-2024-58063                      CVE-2024-58068 CVE-2024-58069 CVE-2024-58071 CVE-2024-58072                      CVE-2024-58076 CVE-2024-58077 CVE-2024-58080 CVE-2024-58083                      CVE-2024-58085 CVE-2024-58086 CVE-2025-21684 CVE-2025-21700                      CVE-2025-21701 CVE-2025-21703 CVE-2025-21704 CVE-2025-21705                      CVE-2025-21706 CVE-2025-21707 CVE-2025-21708 CVE-2025-21711                      CVE-2025-21715 CVE-2025-21716 CVE-2025-21718 CVE-2025-21719                      CVE-2025-21722 CVE-2025-21724 CVE-2025-21725 CVE-2025-21726                      CVE-2025-21727 CVE-2025-21728 CVE-2025-21731 CVE-2025-21734                      CVE-2025-21735 CVE-2025-21736 CVE-2025-21738 CVE-2025-21744                      CVE-2025-21745 CVE-2025-21748 CVE-2025-21749 CVE-2025-21750                      CVE-2025-21753 CVE-2025-21758 CVE-2025-21760 CVE-2025-21761                      CVE-2025-21762 CVE-2025-21763 CVE-2025-21764 CVE-2025-21765                      CVE-2025-21766 CVE-2025-21767 CVE-2025-21772 CVE-2025-21775                      CVE-2025-21776 CVE-2025-21779 CVE-2025-21780 CVE-2025-21781                      CVE-2025-21782 CVE-2025-21785 CVE-2025-21787 CVE-2025-21790                      CVE-2025-21791 CVE-2025-21792 CVE-2025-21794 CVE-2025-21795                      CVE-2025-21796 CVE-2025-21799 CVE-2025-21802 CVE-2025-21804                      CVE-2025-21806 CVE-2025-21811 CVE-2025-21812 CVE-2025-21814                      CVE-2025-21819 CVE-2025-21820 CVE-2025-21821 CVE-2025-21823                      CVE-2025-21826 CVE-2025-21829 CVE-2025-21830 CVE-2025-21832                      CVE-2025-21835     Debian Bug     : 1071562 1087807 1088159 1091517 1091858 1093371 1095435                      1095745 1095764 1098250 1098354 1099138

    Several vulnerabilities have been discovered in the Linux kernel that     may lead to a privilege escalation, denial of service or information     leaks.

    For Debian 11 bullseye, these problems have been fixed in version     6.1.129-1~deb11u1.  This additionally includes many more bug fixes     from stable update 6.1.129, and a fix for a regression affecting some     Rockchip SoCs.

    We recommend that you upgrade your linux-6.1 packages.

    For the detailed security status of linux-6.1 please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/linux-6.1

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS     Attachment:
    signature.asc     Description: PGP signature

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

An update of the linux package has been released.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - In the Linux kernel, the following vulnerability has been resolved: nbd: don't allow reconnect after     disconnect Following process can cause nbd_config UAF: 1) grab nbd_config temporarily; 2)     nbd_genl_disconnect() flush all recv_work() and release the initial reference: nbd_genl_disconnect     nbd_disconnect_and_put nbd_disconnect flush_workqueue(nbd->recv_workq) if     (test_and_clear_bit(NBD_RT_HAS_CONFIG_REF, ...)) nbd_config_put -> due to step 1), reference is still not     zero 3) nbd_genl_reconfigure() queue recv_work() again; nbd_genl_reconfigure config =     nbd_get_config_unlocked(nbd) if (!config) -> succeed if (!test_bit(NBD_RT_BOUND, ...)) -> succeed     nbd_reconnect_socket queue_work(nbd->recv_workq, &args->work) 4) step 1) release the reference; 5)     Finially, recv_work() will trigger UAF: recv_work nbd_config_put(nbd) -> nbd_config is freed     atomic_dec(&config->recv_threads) -> UAF Fix the problem by clearing NBD_RT_BOUND in     nbd_genl_disconnect(), so that nbd_genl_reconfigure() will fail. (CVE-2025-21731)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
234528	Amazon Linux 2 : kernel (ALASKERNEL-5.10-2025-088)	Nessus	Amazon Linux Local Security Checks	high
234515	Amazon Linux 2 : kernel (ALAS-2025-2826)	Nessus	Amazon Linux Local Security Checks	high
234120	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : kernel (SUSE-SU-2025:1180-1)	Nessus	SuSE Local Security Checks	high
234058	SUSE SLES15 / openSUSE 15 Security Update : kernel (SUSE-SU-2025:1178-1)	Nessus	SuSE Local Security Checks	high
234057	SUSE SLES15 / openSUSE 15 Security Update : kernel (SUSE-SU-2025:1177-1)	Nessus	SuSE Local Security Checks	high
233712	Amazon Linux 2 : kernel (ALASKERNEL-5.4-2025-097)	Nessus	Amazon Linux Local Security Checks	high
233707	Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2025-915)	Nessus	Amazon Linux Local Security Checks	high
233694	Amazon Linux 2 : kernel (ALASKERNEL-5.15-2025-069)	Nessus	Amazon Linux Local Security Checks	high
233595	Debian dla-4102 : linux-config-6.1 - security update	Nessus	Debian Local Security Checks	high
233213	Photon OS 4.0: Linux PHSA-2025-4.0-0771	Nessus	PhotonOS Local Security Checks	high
232764	Photon OS 5.0: Linux PHSA-2025-5.0-0486	Nessus	PhotonOS Local Security Checks	high
231353	Linux Distros Unpatched Vulnerability : CVE-2025-21731	Nessus	Misc.	high

Detections

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CVE-2025-21731

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Tenable Plugins

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