In the Linux kernel, the following vulnerability has been resolved: block: mark GFP_NOIO around sysfs ->store() sysfs ->store is called with queue freezed, meantime we have several ->store() callbacks(update_nr_requests, wbt, scheduler) to allocate memory with GFP_KERNEL which may run into direct reclaim code path, then potential deadlock can be caused. Fix the issue by marking NOIO around sysfs ->store()

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

    net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc(CVE-2025-37890)

    crypto: lzo - Fix compression buffer overrun(CVE-2025-38068)

    net: pktgen: fix access outside of user given buffer in pktgen_thread_write().(CVE-2025-38061)

    net_sched: drr: Fix double list add in class with netem as child qdisc(CVE-2025-37915)

    page_pool: Fix use-after-free in page_pool_recycle_in_ring(CVE-2025-38129)

    net_sched: qfq: Fix double list add in class with netem as child qdisc(CVE-2025-37913)

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

    sctp: detect and prevent references to a freed transport in sendmsg(CVE-2025-23142)

    codel: remove sch-q.qlen check before qdisc_tree_reduce_backlog().(CVE-2025-37798)

    net: Fix TOCTOU issue in sk_is_readable().(CVE-2025-38112)

    mpls: Use rcu_dereference_rtnl() in mpls_route_input_rcu().(CVE-2025-38324)

    vhost-scsi: protect vq-log_used with vq-mutex(CVE-2025-38074)

    ftrace: Add cond_resched() to ftrace_graph_set_hash().(CVE-2025-37940)

    crypto: null - Use spin lock instead of mutex(CVE-2025-37808)

    tipc: fix memory leak in tipc_link_xmit(CVE-2025-37757)

    ice: fix Tx scheduler error handling in XDP callback(CVE-2025-38127)

    dmaengine: idxd: Refactor remove call with idxd_cleanup() helper(CVE-2025-38014)

    arm64: set UXN on swapper page tables(CVE-2022-50232)

    tipc: fix NULL pointer dereference in tipc_mon_reinit_self().(CVE-2025-37824)

    ext4: update s_journal_inum if it changes after journal replay(CVE-2023-53091)

    media: cx231xx: set device_caps for 417(CVE-2025-38044)

    net/tipc: fix slab-use-after-free Read in tipc_aead_encrypt_done(CVE-2025-38052)

    RDMA/core: Silence oversized kvmalloc() warning(CVE-2025-37867)

    tracing: Fix oob write in trace_seq_to_buffer().(CVE-2025-37923)

    arm64: bpf: Add BHB mitigation to the epilogue for cBPF programs(CVE-2025-37948)

    HID: pidff: Fix null pointer dereference in pidff_find_fields(CVE-2025-37862)

    bpf: track changes_pkt_data property for global functions(CVE-2024-58098)

    jbd2: remove wrong sb-s_sequence check(CVE-2025-37839)

    udp: Fix memory accounting leak.(CVE-2025-22058)

    tpm: do not start chip while suspended(CVE-2025-23149)

    tracing: Do not let histogram values have some modifiers(CVE-2023-53093)

    dm cache: prevent BUG_ON by blocking retries on failed device resumes(CVE-2025-38066)

    netfilter: ipset: fix region locking in hash types(CVE-2025-37997)

    bpf: Fix WARN() in get_bpf_raw_tp_regs(CVE-2025-38285)

    block: fix rq-qos breakage from skipping rq_qos_done_bio().(CVE-2022-49266)

    bnxt_en: Fix out-of-bound memcpy() during ethtool -w(CVE-2025-37911)

    VMCI: fix race between vmci_host_setup_notify and vmci_ctx_unset_notify(CVE-2025-38102)

    scsi: target: iscsi: Fix timeout on deleted connection(CVE-2025-38075)

    iommu/amd: Fix potential buffer overflow in parse_ivrs_acpihid(CVE-2025-37927)

    net: fix memory leak in tcp_conn_request().(CVE-2024-57841)

    jbd2: fix data-race and null-ptr-deref in jbd2_journal_dirty_metadata().(CVE-2025-38337)

    drm/ nouveau: Fix WARN_ON in nouveau_fence_context_kill().(CVE-2025-37930)

    arm64: set UXN on swapper page tables(CVE-2022-50230)

    cxgb4: fix memory leak in cxgb4_init_ethtool_filters() error path(CVE-2025-37788)

    x86/fpu: KVM: Set the base guest FPU uABI size to sizeof(struct kvm_xsave).(CVE-2022-49557)

    sch_htb: make htb_qlen_notify() idempotent(CVE-2025-37932)

    net: usb: lan78xx: Limit packet length to skb-len(CVE-2023-53068)

    x86/iopl: Cure TIF_IO_BITMAP inconsistencies(CVE-2025-38100)

    net_sched: hfsc: Fix a potential UAF in hfsc_dequeue() too(CVE-2025-37823)

    net_sched: prio: fix a race in prio_tune().(CVE-2025-38083)

    net_sched: red: fix a race in __red_change().(CVE-2025-38108)

    media: cxusb: no longer judge rbuf when the write fails(CVE-2025-38229)

    xsk: Fix race condition in AF_XDP generic RX path(CVE-2025-37920)

    mm/hugetlb: unshare page tables during VMA split, not before(CVE-2025-38084)

    net_sched: hfsc: Fix a UAF vulnerability in class handling(CVE-2025-37797)

    block: mark GFP_NOIO around sysfs -store().(CVE-2025-21817)

    module: ensure that kobject_put() is safe for module type kobjects(CVE-2025-37995)

    bpf: Fix a data-race around bpf_jit_limit.(CVE-2022-49967)

    ext4: ignore xattrs past end(CVE-2025-37738)

    net_sched: hfsc: Address reentrant enqueue adding class to eltree twice(CVE-2025-38001)

    sch_hfsc: Fix qlen accounting bug when using peek in hfsc_enqueue().(CVE-2025-38000)

    arm64: bpf: Only mitigate cBPF programs loaded by unprivileged users(CVE-2025-37963)

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.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2025-994 advisory.

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

    btrfs: do proper folio cleanup when cow_file_range() failed (CVE-2024-57976)

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

    kernel: be more careful about dup_mmap() failures and uprobe registering (CVE-2025-21709)

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

    block: fix queue freeze vs limits lock order in sysfs store methods (CVE-2025-21807)

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

    block: mark GFP_NOIO around sysfs ->store() (CVE-2025-21817)

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

    iommu/vt-d: Avoid use of NULL after WARN_ON_ONCE (CVE-2025-21833)

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

    net: better track kernel sockets lifetime (CVE-2025-21884)

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

    bnxt_en: Mask the bd_cnt field in the TX BD properly (CVE-2025-22108)

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

    ext4: goto right label 'out_mmap_sem' in ext4_setattr() (CVE-2025-22120)

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

    net_sched: hfsc: Fix a UAF vulnerability in class handling (CVE-2025-37797)

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

    vmxnet3: Fix malformed packet sizing in vmxnet3_process_xdp (CVE-2025-37799)

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

    driver core: fix potential NULL pointer dereference in dev_uevent() (CVE-2025-37800)

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

    fs/ntfs3: Keep write operations atomic (CVE-2025-37806)

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

    bpf: Fix kmemleak warning for percpu hashmap (CVE-2025-37807)

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

    crypto: null - Use spin lock instead of mutex (CVE-2025-37808)

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

    usb: typec: class: Fix NULL pointer access (CVE-2025-37809)

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

    usb: xhci: Fix invalid pointer dereference in Etron workaround (CVE-2025-37813)

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

    tty: Require CAP_SYS_ADMIN for all usages of TIOCL_SELMOUSEREPORT (CVE-2025-37814)

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

    irqchip/gic-v2m: Prevent use after free of gicv2m_get_fwnode() (CVE-2025-37819)

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

    xen-netfront: handle NULL returned by xdp_convert_buff_to_frame() (CVE-2025-37820)

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

    sched/eevdf: Fix se->slice being set to U64_MAX and resulting crash (CVE-2025-37821)

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

    net_sched: hfsc: Fix a potential UAF in hfsc_dequeue() too (CVE-2025-37823)

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

    btrfs: zoned: return EIO on RAID1 block group write pointer mismatch (CVE-2025-37827)

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

    mm/vmscan: don't try to reclaim hwpoison folio (CVE-2025-37834)

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

    netfs: Only create /proc/fs/netfs with CONFIG_PROC_FS (CVE-2025-37876)

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

    iommu: Clear iommu-dma ops on cleanup (CVE-2025-37877)

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

    perf/core: Fix WARN_ON(!ctx) in __free_event() for partial init (CVE-2025-37878)

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

    usb: xhci: Fix isochronous Ring Underrun/Overrun event handling (CVE-2025-37882)

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

    bpf: Fix deadlock between rcu_tasks_trace and event_mutex. (CVE-2025-37884)

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

    KVM: x86: Reset IRTE to host control if *new* route isn't postable (CVE-2025-37885)

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

    net/mlx5: Fix null-ptr-deref in mlx5_create_{inner_,}ttc_table() (CVE-2025-37888)

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

    net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc (CVE-2025-37890)

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

    net: use sock_gen_put() when sk_state is TCP_TIME_WAIT (CVE-2025-37894)

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

    iommu: Fix two issues in iommu_copy_struct_from_user() (CVE-2025-37900)

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

    mm, slab: clean up slab->obj_exts always (CVE-2025-37908)

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

    net_sched: qfq: Fix double list add in class with netem as child qdisc (CVE-2025-37913)

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

    net_sched: ets: Fix double list add in class with netem as child qdisc (CVE-2025-37914)

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

    net_sched: drr: Fix double list add in class with netem as child qdisc (CVE-2025-37915)

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

    xsk: Fix race condition in AF_XDP generic RX path (CVE-2025-37920)

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

    vxlan: vnifilter: Fix unlocked deletion of default FDB entry (CVE-2025-37921)

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

    tracing: Fix oob write in trace_seq_to_buffer() (CVE-2025-37923)

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

    iommu/amd: Fix potential buffer overflow in parse_ivrs_acpihid (CVE-2025-37927)

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

    dm-bufio: don't schedule in atomic context (CVE-2025-37928)

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

    arm64: errata: Add missing sentinels to Spectre-BHB MIDR arrays (CVE-2025-37929)

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

    btrfs: adjust subpage bit start based on sectorsize (CVE-2025-37931)

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

    sch_htb: make htb_qlen_notify() idempotent (CVE-2025-37932)

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

    perf/x86/intel: KVM: Mask PEBS_ENABLE loaded for guest with vCPU's value. (CVE-2025-37936)

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

    tracing: Verify event formats that have %*p.. (CVE-2025-37938)

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

    arm64: bpf: Add BHB mitigation to the epilogue for cBPF programs (CVE-2025-37948)

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

    xenbus: Use kref to track req lifetime (CVE-2025-37949)

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

    smb: client: Avoid race in open_cached_dir with lease breaks (CVE-2025-37954)

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

    virtio-net: free xsk_buffs on error in virtnet_xsk_pool_enable() (CVE-2025-37955)

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

    KVM: SVM: Forcibly leave SMM mode on SHUTDOWN interception (CVE-2025-37957)

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

    mm/huge_memory: fix dereferencing invalid pmd migration entry (CVE-2025-37958)

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

    bpf: Scrub packet on bpf_redirect_peer (CVE-2025-37959)

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

    memblock: Accept allocated memory before use in memblock_double_array() (CVE-2025-37960)

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

    ipvs: fix uninit-value for saddr in do_output_route4 (CVE-2025-37961)

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

    arm64: bpf: Only mitigate cBPF programs loaded by unprivileged users (CVE-2025-37963)

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

    x86/mm: Eliminate window where TLB flushes may be inadvertently skipped (CVE-2025-37964)

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

    usb: typec: class: Invalidate USB device pointers on partner unregistration (CVE-2025-37986)

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

    fix a couple of races in MNT_TREE_BENEATH handling by do_move_mount() (CVE-2025-37988)

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

    net: phy: leds: fix memory leak (CVE-2025-37989)

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

    module: ensure that kobject_put() is safe for module type kobjects (CVE-2025-37995)

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

    netfilter: ipset: fix region locking in hash types (CVE-2025-37997)

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

    openvswitch: Fix unsafe attribute parsing in output_userspace() (CVE-2025-37998)

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

    fs/erofs/fileio: call erofs_onlinefolio_split() after bio_add_folio() (CVE-2025-37999)

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

    sch_hfsc: make hfsc_qlen_notify() idempotent (CVE-2025-38177)

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 ALAS2023-2025-984 advisory.

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

    btrfs: do proper folio cleanup when cow_file_range() failed (CVE-2024-57976)

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

    kernel: be more careful about dup_mmap() failures and uprobe registering (CVE-2025-21709)

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

    block: fix queue freeze vs limits lock order in sysfs store methods (CVE-2025-21807)

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

    block: mark GFP_NOIO around sysfs ->store() (CVE-2025-21817)

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

    iommu/vt-d: Avoid use of NULL after WARN_ON_ONCE (CVE-2025-21833)

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

    net: better track kernel sockets lifetime (CVE-2025-21884)

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

    bnxt_en: Mask the bd_cnt field in the TX BD properly (CVE-2025-22108)

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

  - block: mark GFP_NOIO around sysfs ->store() sysfs ->store is called with queue freezed, meantime we have     several ->store() callbacks(update_nr_requests, wbt, scheduler) to allocate memory with GFP_KERNEL which     may run into direct reclaim code path, then potential deadlock can be caused. Fix the issue by marking     NOIO around sysfs ->store() (CVE-2025-21817)

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

ID	Name	Product	Family	Severity
264474	EulerOS 2.0 SP12 : kernel (EulerOS-SA-2025-2012)	Nessus	Huawei Local Security Checks	medium
261882	EulerOS 2.0 SP12 : kernel (EulerOS-SA-2025-2043)	Nessus	Huawei Local Security Checks	medium
238280	Amazon Linux 2023 : bpftool, kernel6.12, kernel6.12-modules-extra (ALAS2023-2025-994)	Nessus	Amazon Linux Local Security Checks	medium
237679	Amazon Linux 2023 : bpftool, kernel6.12, kernel6.12-modules-extra (ALAS2023-2025-984)	Nessus	Amazon Linux Local Security Checks	medium
230420	Linux Distros Unpatched Vulnerability : CVE-2025-21817	Nessus	Misc.	medium

Detections

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CVE-2025-21817

medium

Tenable Plugins

medium

medium

medium

medium

medium