In the Linux kernel, the following vulnerability has been resolved: mm: zswap: properly synchronize freeing resources during CPU hotunplug In zswap_compress() and zswap_decompress(), the per-CPU acomp_ctx of the current CPU at the beginning of the operation is retrieved and used throughout. However, since neither preemption nor migration are disabled, it is possible that the operation continues on a different CPU. If the original CPU is hotunplugged while the acomp_ctx is still in use, we run into a UAF bug as some of the resources attached to the acomp_ctx are freed during hotunplug in zswap_cpu_comp_dead() (i.e. acomp_ctx.buffer, acomp_ctx.req, or acomp_ctx.acomp). The problem was introduced in commit 1ec3b5fe6eec ("mm/zswap: move to use crypto_acomp API for hardware acceleration") when the switch to the crypto_acomp API was made. Prior to that, the per-CPU crypto_comp was retrieved using get_cpu_ptr() which disables preemption and makes sure the CPU cannot go away from under us. Preemption cannot be disabled with the crypto_acomp API as a sleepable context is needed. Use the acomp_ctx.mutex to synchronize CPU hotplug callbacks allocating and freeing resources with compression/decompression paths. Make sure that acomp_ctx.req is NULL when the resources are freed. In the compression/decompression paths, check if acomp_ctx.req is NULL after acquiring the mutex (meaning the CPU was offlined) and retry on the new CPU. The initialization of acomp_ctx.mutex is moved from the CPU hotplug callback to the pool initialization where it belongs (where the mutex is allocated). In addition to adding clarity, this makes sure that CPU hotplug cannot reinitialize a mutex that is already locked by compression/decompression. Previously a fix was attempted by holding cpus_read_lock() [1]. This would have caused a potential deadlock as it is possible for code already holding the lock to fall into reclaim and enter zswap (causing a deadlock). A fix was also attempted using SRCU for synchronization, but Johannes pointed out that synchronize_srcu() cannot be used in CPU hotplug notifiers [2]. Alternative fixes that were considered/attempted and could have worked: - Refcounting the per-CPU acomp_ctx. This involves complexity in handling the race between the refcount dropping to zero in zswap_[de]compress() and the refcount being re-initialized when the CPU is onlined. - Disabling migration before getting the per-CPU acomp_ctx [3], but that's discouraged and is a much bigger hammer than needed, and could result in subtle performance issues. [1]https://lkml.kernel.org/20241219212437.2714151-1-yosryahmed@google.com/ [2]https://lkml.kernel.org/20250107074724.1756696-2-yosryahmed@google.com/ [3]https://lkml.kernel.org/20250107222236.2715883-2-yosryahmed@google.com/ [yosryahmed@google.com: remove comment] Link: https://lkml.kernel.org/r/CAJD7tkaxS1wjn+swugt8QCvQ-rVF5RZnjxwPGX17k8x9zSManA@mail.gmail.com

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:1241-1 advisory.

    The SUSE Linux Enterprise 15 SP5 kernel was updated to receive various security bugfixes.

    The following security bugs were fixed:

    - CVE-2022-49053: scsi: target: tcmu: Fix possible page UAF (bsc#1237918).
    - CVE-2022-49465: blk-throttle: Set BIO_THROTTLED when bio has been throttled (bsc#1238919).
    - CVE-2022-49739: gfs2: Always check inode size of inline inodes (bsc#1240207).
    - CVE-2023-52935: mm/khugepaged: fix ->anon_vma race (bsc#1240276).
    - CVE-2024-53124: net: fix data-races around sk->sk_forward_alloc (bsc#1234074).
    - CVE-2024-53176: smb: During unmount, ensure all cached dir instances drop their dentry (bsc#1234894).
    - CVE-2024-53178: smb: Do not leak cfid when reconnect races with open_cached_dir (bsc#1234895).
    - CVE-2024-56651: can: hi311x: hi3110_can_ist(): fix potential use-after-free (bsc#1235528).
    - CVE-2024-57996: net_sched: sch_sfq: do not allow 1 packet limit (bsc#1239076).
    - CVE-2024-58013: Bluetooth: MGMT: Fix slab-use-after-free Read in mgmt_remove_adv_monitor_sync     (bsc#1239095).
    - CVE-2024-58014: wifi: brcmsmac: add gain range check to wlc_phy_iqcal_gainparams_nphy() (bsc#1239109).
    - CVE-2025-21693: mm: zswap: properly synchronize freeing resources during CPU hotunplug (bsc#1237029).
    - CVE-2025-21718: net: rose: fix timer races against user threads (bsc#1239073).
    - CVE-2025-21772: partitions: mac: fix handling of bogus partition table (bsc#1238911).
    - CVE-2025-21780: drm/amdgpu: avoid buffer overflow attach in smu_sys_set_pp_table() (bsc#1239115).


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 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:1195-1 advisory.

    The SUSE Linux Enterprise 15 SP4 kernel was updated to receive various security bugfixes.

    The following security bugs were fixed:

    - CVE-2022-49053: scsi: target: tcmu: Fix possible page UAF (bsc#1237918).
    - CVE-2022-49465: blk-throttle: Set BIO_THROTTLED when bio has been throttled (bsc#1238919).
    - CVE-2022-49739: gfs2: Always check inode size of inline inodes (bsc#1240207).
    - CVE-2023-52935: mm/khugepaged: fix ->anon_vma race (bsc#1240276).
    - CVE-2024-53064: idpf: fix idpf_vc_core_init error path (bsc#1233558 bsc#1234464).
    - CVE-2024-56651: can: hi311x: hi3110_can_ist(): fix potential use-after-free (bsc#1235528).
    - CVE-2024-58083: KVM: Explicitly verify target vCPU is online in kvm_get_vcpu() (bsc#1239036).
    - CVE-2025-21693: mm: zswap: properly synchronize freeing resources during CPU hotunplug (bsc#1237029).
    - CVE-2025-21714: RDMA/mlx5: Fix implicit ODP use after free (bsc#1237890).
    - CVE-2025-21732: RDMA/mlx5: Fix a race for an ODP MR which leads to CQE with error (bsc#1237877).
    - CVE-2025-21753: btrfs: fix use-after-free when attempting to join an aborted transaction (bsc#1237875).
    - CVE-2025-21772: partitions: mac: fix handling of bogus partition table (bsc#1238911).


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.

According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

    net: fix data-races around sk-sk_forward_alloc(CVE-2024-53124)

    nvme-multipath: defer partition scanning(CVE-2024-53093)

    bpf: sync_linked_regs() must preserve subreg_def(CVE-2024-53125)

    KVM: VMX: Bury Intel PT virtualization (guest/host mode) behind CONFIG_BROKEN(CVE-2024-53135)

    netlink: terminate outstanding dump on socket close(CVE-2024-53140)

    media: ts2020: fix null-ptr-deref in ts2020_probe().(CVE-2024-56574)

    drm/amd/display: Fix out-of-bounds access in 'dcn21_link_encoder_create'(CVE-2024-56608)

    ftrace: Fix regression with module command in stack_trace_filter(CVE-2024-56569)

    scsi: qedf: Fix a possible memory leak in qedf_alloc_and_init_sb().(CVE-2024-56748)

    ovl: Filter invalid inodes with missing lookup function(CVE-2024-56570)

    smb: client: fix NULL ptr deref in crypto_aead_setkey().(CVE-2024-53185)

    vfio/pci: Properly hide first-in-list PCIe extended capability(CVE-2024-53214)

    bpf: fix OOB devmap writes when deleting elemen(CVE-2024-56615)

    io_uring: check if iowq is killed before queuing(CVE-2024-56709)

    leds: class: Protect brightness_show() with led_cdev-led_access mutex(CVE-2024-56587)

    io_uring: check for overflows in io_pin_pages(CVE-2024-53187)

    RDMA/mlx5: Move events notifier registration to be after device registration(CVE-2024-53224)

    scsi: sg: Fix slab-use-after-free read in sg_release()(CVE-2024-56631)

    bpf, sockmap: Fix race between element replace and close()(CVE-2024-56664)

    net: inet: do not leave a dangling sk pointer in inet_create().(CVE-2024-56601)

    tipc: Fix use-after-free of kernel socket in cleanup_bearer().(CVE-2024-56642)

    sunrpc: clear XPRT_SOCK_UPD_TIMEOUT when reset transport(CVE-2024-56688)

    ipv6: Fix soft lockups in fib6_select_path under high next hop churn(CVE-2024-56703)

    rtc: check if __rtc_read_time was successful in rtc_timer_do_work()(CVE-2024-56739)

    mm/mempolicy: fix migrate_to_node() assuming there is at least one VMA in a MM(CVE-2024-56611)

    virtiofs: use pages instead of pointer for kernel direct IO(CVE-2024-53219)

    PCI: Fix use-after-free of slot-bus on hot remove(CVE-2024-53194)

    io_uring/tctx: work around xa_store() allocation error issue(CVE-2024-56584)

    SUNRPC: make sure cache entry active before cache_show(CVE-2024-53174)

    tcp_bpf: Fix the sk_mem_uncharge logic in tcp_bpf_sendmsg(CVE-2024-56633)

    firmware: arm_scpi: Check the DVFS OPP count returned by the firmware(CVE-2024-53157)

    crypto: pcrypt - Call crypto layer directly when padata_do_parallel() return -EBUSY(CVE-2024-56690)

    smb: client: fix use-after-free of signing key(CVE-2024-53179)

    quota: flush quota_release_work upon quota writeback(CVE-2024-56780)

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

    tracing: Prevent bad count for tracing_cpumask_write(CVE-2024-56763)

    media: dvb-frontends: dib3000mb: fix uninit-value in dib3000_write_reg(CVE-2024-56769)

    nvme-pci: fix freeing of the HMB descriptor table(CVE-2024-56756)

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

    blk-cgroup: Fix UAF in blkcg_unpin_online().(CVE-2024-56672)

    acpi: nfit: vmalloc-out-of-bounds Read in acpi_nfit_ctl(CVE-2024-56662)

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

    net: Fix icmp host relookup triggering ip_rt_bug(CVE-2024-56647)

    NFSD: Prevent a potential integer overflow(CVE-2024-53146)

    scsi: qedi: Fix a possible memory leak in qedi_alloc_and_init_sb()(CVE-2024-56747)

    ipv6: release nexthop on device removal(CVE-2024-56751)

    bpf: Call free_htab_elem() after htab_unlock_bucket().(CVE-2024-56592)

    RDMA/hns: Fix cpu stuck caused by printings during reset(CVE-2024-56722)

    scsi: qla2xxx: Fix use after free on unload(CVE-2024-56623)

    scsi: hisi_sas: Create all dump files during debugfs initialization(CVE-2024-56588)

    drm/modes: Avoid divide by zero harder in drm_mode_vrefresh().(CVE-2024-56369)

    NFSv4.0: Fix a use-after-free problem in the asynchronous open()(CVE-2024-53173)

    af_packet: avoid erroring out after sock_init_data() in packet_create().(CVE-2024-56606)

    net: inet6: do not leave a dangling sk pointer in inet6_create().(CVE-2024-56600)

    wifi: brcmfmac: Fix oops due to NULL pointer dereference in brcmf_sdiod_sglist_rw().(CVE-2024-56593)

    bpf, sockmap: Several fixes to bpf_msg_pop_data(CVE-2024-56720)

    xsk: fix OOB map writes when deleting elements(CVE-2024-56614)

    netdevsim: prevent bad user input in nsim_dev_health_break_write().(CVE-2024-56716)

    nfsd: fix nfs4_openowner leak when concurrent nfsd4_open occur(CVE-2024-56779)

    nvme-rdma: unquiesce admin_q before destroy it(CVE-2024-49569)

    net/sched: netem: account for backlog updates from child qdisc(CVE-2024-56770)

    smb: client: fix TCP timers deadlock after rmmod(CVE-2024-54680)

    fs: relax assertions on failure to encode file handles(CVE-2024-57924)

    bpf: Prevent tailcall infinite loop caused by freplace(CVE-2024-47794)

    netfilter: IDLETIMER: Fix for possible ABBA deadlock(CVE-2024-54683)

    scsi: megaraid_sas: Fix for a potential deadlock(CVE-2024-57807)

    Drivers: hv: util: Avoid accessing a ringbuffer not initialized yet(CVE-2024-55916)

    mm: hugetlb: independent PMD page table shared count(CVE-2024-57883)

    arm64: ptrace: fix partial SETREGSET for NT_ARM_TAGGED_ADDR_CTRL(CVE-2024-57874)

    drm/dp_mst: Fix resetting msg rx state after topology removal(CVE-2024-57876)

    ceph: give up on paths longer than PATH_MAX(CVE-2024-53685)

    mm: vmscan: account for free pages to prevent infinite Loop in throttle_direct_reclaim().(CVE-2024-57884)

    workqueue: Do not warn when cancelling WQ_MEM_RECLAIM work from !WQ_MEM_RECLAIM worker(CVE-2024-57888)

    virtio-blk: don't keep queue frozen during system suspend(CVE-2024-57946)

    KVM: arm64: Get rid of userspace_irqchip_in_use(CVE-2024-53195)

    netfilter: nf_set_pipapo: fix initial map fill(CVE-2024-57947)

    sunrpc: fix one UAF issue caused by sunrpc kernel tcp socket(CVE-2024-53168)

    net: restrict SO_REUSEPORT to inet sockets(CVE-2024-57903)

    bpf: Fix bpf_sk_select_reuseport() memory leak(CVE-2025-21683)

    selinux: ignore unknown extended permissions(CVE-2024-57931)

    pinmux: Use sequential access to access desc-pinmux data(CVE-2024-47141)

    drm/dp_mst: Ensure mst_primary pointer is valid in drm_dp_mst_handle_up_req().(CVE-2024-57798)

    RDMA/uverbs: Prevent integer overflow issue(CVE-2024-57890)

    dlm: fix possible lkb_resource null dereference(CVE-2024-47809)

    net/sctp: Prevent autoclose integer overflow in sctp_association_init().(CVE-2024-57938)

    iommu/arm-smmu: Defer probe of clients after smmu device bound(CVE-2024-56568)

    NFSD: Prevent NULL dereference in nfsd4_process_cb_update()(CVE-2024-53217)

    net/ipv6: release expired exception dst cached in socket(CVE-2024-56644)

    RDMA/rxe: Remove the direct link to net_device(CVE-2024-57795)

    af_packet: fix vlan_get_tci() vs MSG_PEEK(CVE-2024-57902)

    net: sched: fix ordering of qlen adjustment(CVE-2024-53164)

    af_packet: fix vlan_get_protocol_dgram() vs MSG_PEEK(CVE-2024-57901)

    sctp: sysctl: cookie_hmac_alg: avoid using current-nsproxy(CVE-2025-21640)

    sctp: sysctl: auth_enable: avoid using current-nsproxy(CVE-2025-21638)

    gfs2: Truncate address space when flipping GFS2_DIF_JDATA flag(CVE-2025-21699)

    netfilter: ipset: Hold module reference while requesting a module(CVE-2024-56637)

    net_sched: cls_flow: validate TCA_FLOW_RSHIFT attribute(CVE-2025-21653)

    netfilter: conntrack: clamp maximum hashtable size to INT_MAX(CVE-2025-21648)

    fs/proc: fix softlockup in __read_vmcore (part 2).(CVE-2025-21694)

    filemap: avoid truncating 64-bit offset to 32 bits(CVE-2025-21665)

    mm: zswap: properly synchronize freeing resources during CPU hotunplug(CVE-2025-21693)

    bpf: fix recursive lock when verdict program return SK_PASS(CVE-2024-56694)

    net/mlx5: Fix variable not being completed when function returns(CVE-2025-21662)

Tenable has extracted the preceding description block directly from the EulerOS kernel 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 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: mm: zswap: properly synchronize     freeing resources during CPU hotunplug In zswap_compress() and zswap_decompress(), the per-CPU acomp_ctx     of the current CPU at the beginning of the operation is retrieved and used throughout. However, since     neither preemption nor migration are disabled, it is possible that the operation continues on a different     CPU. If the original CPU is hotunplugged while the acomp_ctx is still in use, we run into a UAF bug as     some of the resources attached to the acomp_ctx are freed during hotunplug in zswap_cpu_comp_dead() (i.e.
    acomp_ctx.buffer, acomp_ctx.req, or acomp_ctx.acomp). The problem was introduced in commit 1ec3b5fe6eec     (mm/zswap: move to use crypto_acomp API for hardware acceleration) when the switch to the crypto_acomp     API was made. Prior to that, the per-CPU crypto_comp was retrieved using get_cpu_ptr() which disables     preemption and makes sure the CPU cannot go away from under us. Preemption cannot be disabled with the     crypto_acomp API as a sleepable context is needed. Use the acomp_ctx.mutex to synchronize CPU hotplug     callbacks allocating and freeing resources with compression/decompression paths. Make sure that     acomp_ctx.req is NULL when the resources are freed. In the compression/decompression paths, check if     acomp_ctx.req is NULL after acquiring the mutex (meaning the CPU was offlined) and retry on the new CPU.
    The initialization of acomp_ctx.mutex is moved from the CPU hotplug callback to the pool initialization     where it belongs (where the mutex is allocated). In addition to adding clarity, this makes sure that CPU     hotplug cannot reinitialize a mutex that is already locked by compression/decompression. Previously a fix     was attempted by holding cpus_read_lock() [1]. This would have caused a potential deadlock as it is     possible for code already holding the lock to fall into reclaim and enter zswap (causing a deadlock). A     fix was also attempted using SRCU for synchronization, but Johannes pointed out that synchronize_srcu()     cannot be used in CPU hotplug notifiers [2]. Alternative fixes that were considered/attempted and could     have worked: - Refcounting the per-CPU acomp_ctx. This involves complexity in handling the race between     the refcount dropping to zero in zswap_[de]compress() and the refcount being re-initialized when the CPU     is onlined. - Disabling migration before getting the per-CPU acomp_ctx [3], but that's discouraged and is     a much bigger hammer than needed, and could result in subtle performance issues.
    [1]https://lkml.kernel.org/20241219212437.2714151-1-yosryahmed@google.com/     [2]https://lkml.kernel.org/20250107074724.1756696-2-yosryahmed@google.com/     [3]https://lkml.kernel.org/20250107222236.2715883-2-yosryahmed@google.com/ [yosryahmed@google.com: remove     comment] Link: https://lkml.kernel.org/r/CAJD7tkaxS1wjn+swugt8QCvQ-     rVF5RZnjxwPGX17k8x9zSManA@mail.gmail.com (CVE-2025-21693)

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

ID	Name	Product	Family	Severity
234407	SUSE SLES15 Security Update : kernel (SUSE-SU-2025:1241-1)	Nessus	SuSE Local Security Checks	high
234182	SUSE SLES15 Security Update : kernel (SUSE-SU-2025:1195-1)	Nessus	SuSE Local Security Checks	high
234161	EulerOS 2.0 SP11 : kernel (EulerOS-SA-2025-1359)	Nessus	Huawei Local Security Checks	high
234145	EulerOS 2.0 SP11 : kernel (EulerOS-SA-2025-1360)	Nessus	Huawei 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
231653	Linux Distros Unpatched Vulnerability : CVE-2025-21693	Nessus	Misc.	high

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