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

  - io_uring/rsrc: fix folio unpinning syzbot complains about an unmapping failure: [ 108.070381][ T14] kernel     BUG at mm/gup.c:71! [ 108.070502][ T14] Internal error: Oops - BUG: 00000000f2000800 [#1] SMP [     108.123672][ T14] Hardware name: QEMU KVM Virtual Machine, BIOS edk2-20250221-8.fc42 02/21/2025 [     108.127458][ T14] Workqueue: iou_exit io_ring_exit_work [ 108.174205][ T14] Call trace: [ 108.175649][     T14] sanity_check_pinned_pages+0x7cc/0x7d0 (P) [ 108.178138][ T14] unpin_user_page+0x80/0x10c [     108.180189][ T14] io_release_ubuf+0x84/0xf8 [ 108.182196][ T14] io_free_rsrc_node+0x250/0x57c [     108.184345][ T14] io_rsrc_data_free+0x148/0x298 [ 108.186493][ T14] io_sqe_buffers_unregister+0x84/0xa0 [     108.188991][ T14] io_ring_ctx_free+0x48/0x480 [ 108.191057][ T14] io_ring_exit_work+0x764/0x7d8 [     108.193207][ T14] process_one_work+0x7e8/0x155c [ 108.195431][ T14] worker_thread+0x958/0xed8 [     108.197561][ T14] kthread+0x5fc/0x75c [ 108.199362][ T14] ret_from_fork+0x10/0x20 We can pin a tail page     of a folio, but then io_uring will try to unpin the head page of the folio. While it should be fine in     terms of keeping the page actually alive, mm folks say it's wrong and triggers a debug warning. Use     unpin_user_folio() instead of unpin_user_page*. [axboe: adapt to current tree, massage commit message]     (CVE-2025-38256)

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

Linux/Unix ホストには、ベンダーが提供するパッチが利用できない脆弱性の影響を受ける複数のパッケージがインストールされています。

  - io_uring/rsrcfolio のピン解除 syzbot がマッピング解除の失敗について苦情を言います[ 108.070381][ T14] mm/gup.c:71! におけるカーネルのバグ[ 108.070502][ T14] 内部エラーOops - BUG: 00000000f2000800 [#1 ] SMP [108.123672][ T14] ハードウェア名QEMU KVM 仮想マシン、BIOS edk2-20250221-8.fc42 02/21/2025 [108.127458][ T14] ワークキューiou_exit io_ring_exit_work [ 108.174205][ T14] コールトレース[ 108.175649][T14] sanity_check_pinned_pages+0x7cc/0x7d0 (P) [ 108.178138][ T14] unpin_user_page+0x80/0x10c []108.180189][ T14] io_release_ubuf+0x84/0xf8 [ 108.182196][ T14] io_free_rsrc_node+0x250/0x57c [108.184345][ T14] io_rsrc_data_free+0x148/0x298 [ 108.186493 ] T14] io_sqe_buffers_unregister+0x84/ 0xa0 [108.188991][ T14] io_ring_ctx_free+0x48/0x480 [ 108.191057][ T14] io_ring_exit_work+0x764/0x7d8 [108.193207][ T14] process_one_work+0x7e8/0x155c [ 108.195431][ T14] worker_thread+ 0x958/0xed8 [108.197561][ T14] kthread+0x5fc/0x75c [ 108.199362][ T14] ret_from_fork+0x10/0x20 folio のテールページを固定できますが、io_uring はヘッドページのピン解除を試みます。発見しました。ページを実際に生きているという点では問題ないはずですが、mm の一般ユーザーはこれは間違っており、デバッグの警告を発生させると主張しています。unpin_user_page* の代わりに unpin_user_folio() を使用。 [axboe現在のツリーに適合、メッセージコミットメッセージCVE-2025-38256

Nessus は、ベンダーによって報告されたパッケージの存在に依存していることに注意してください。

Linux/Unix 主機上安裝了一個或多個受到弱點影響的套件，且供應商未提供可用的修補程式。

  - io_uring/rsrc修正作品集取消釘選 syzbot 抱怨的取消對應失敗[ 108.070381][ T14] mm/gup.c:71! 的核心錯誤[ 108.070502][ T14] 內部錯誤Oops - 錯誤00000000f2000800 [#1] SMP [108.123672][ T14] 硬體名稱QEMU KVM 虛擬機器、BIOS edk2-20250221-8.fc42 2025 年 2 月 21 日 [108.127458][ T14] 工作佇列 iou_exit io_ring_exit_work [ 108.174205][ T14] 呼叫追踪 [ 108.175649][ [T14] sanity_check_pinned_pages+0x7cc/0x7d0 (P) [ 108.178138][ T14] unpin_user_page+0x80/0x10c [108.180189][ T14] io_release_ubuf+0x84/0xf8 [ 108.182196][ T14] io_free_rsrc_node+0x250/0x57c [108.184345][ T14] io_rsrc_data_free+0x148/0x298 [ 108.186493][ T14] io_sqe_buffers_unregister+0x84/ 0xa0 [108.188991][ T14] io_ring_ctx_free+0x48/0x480 [ 108.191057][ T14] io_ring_exit_work+0x764/0x7d8 [108.193207][ T14] process_one_work+0x7e8/0x155c [ 108.195431][ T14] worker_thread+ 0x958/0xed8 [108.197561][ T14] kthread+0x5fc/0x75c [ 108.199362][ T14] ret_from_fork+0x10/0x20 我們可以釘選作品集的結尾頁面但是 io_uring 會嘗試取消釘選 的開頭頁面作品集。雖然就讓頁面保持實際作用中而言應該沒有問題但是 mm 人士表示這是錯誤的並會觸發除錯警告。使用 unpin_user_folio() 而非 unpin_user_page*。 [axboe調整為目前樹狀結構更新提交訊息] (CVE-2025-38256)

請注意，Nessus 依賴供應商報告的套件存在。

The remote SUSE Linux SLES15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:02853-1 advisory.

    The SUSE Linux Enterprise 15 SP7 RT kernel was updated to receive various security bugfixes.

    The following security bugs were fixed:
    - CVE-2024-36028: mm/hugetlb: fix DEBUG_LOCKS_WARN_ON(1) when dissolve_free_hugetlb_folio() (bsc#1225707).
    - CVE-2024-36348, CVE-2024-36349, CVE-2024-36350, CVE-2024-36357: x86/process: Move the buffer clearing     before MONITOR (bsc#1238896).
    - CVE-2024-42134: virtio-pci: Check if is_avq is NULL (bsc#1228664 bsc#1247831).
    - CVE-2024-44963: btrfs: do not BUG_ON() when freeing tree block after error (bsc#1230216).
    - CVE-2024-56742: vfio/mlx5: Fix an unwind issue in mlx5vf_add_migration_pages() (bsc#1235613).
    - CVE-2025-21839: KVM: x86: Load DR6 with guest value only before entering .vcpu_run() loop (bsc#1239061).
    - CVE-2025-21872: efi/mokvar-table: Avoid repeated map/unmap of the same page (bsc#1240323).
    - CVE-2025-23163: net: vlan: do not propagate flags on open (bsc#1242837).
    - CVE-2025-37856: btrfs: harden block_group::bg_list against list_del() races (bsc#1243068).
    - CVE-2025-37864: net: dsa: clean up FDB, MDB, VLAN entries on unbind (bsc#1242965).
    - CVE-2025-37885: KVM: x86: Reset IRTE to host control if *new* route isn't postable (bsc#1242960).
    - CVE-2025-37920: kABI workaround for xsk: Fix race condition in AF_XDP generic RX path (bsc#1243479).
    - CVE-2025-37984: crypto: ecdsa - Harden against integer overflows in DIV_ROUND_UP() (bsc#1243669).
    - CVE-2025-38034: btrfs: correct the order of prelim_ref arguments in btrfs__prelim_ref (bsc#1244792).
    - CVE-2025-38035: nvmet-tcp: do not restore null sk_state_change (bsc#1244801).
    - CVE-2025-38047: x86/fred: Fix system hang during S4 resume with FRED enabled (bsc#1245084).
    - CVE-2025-38051: smb: client: Fix use-after-free in cifs_fill_dirent (bsc#1244750).
    - CVE-2025-38058: __legitimize_mnt(): check for MNT_SYNC_UMOUNT should be under mount_lock (bsc#1245151).
    - CVE-2025-38061: net: pktgen: fix access outside of user given buffer in pktgen_thread_write()     (bsc#1245440).
    - CVE-2025-38062: kABI: restore layout of struct msi_desc (bsc#1245216).
    - CVE-2025-38063: dm: fix unconditional IO throttle caused by REQ_PREFLUSH (bsc#1245202).
    - CVE-2025-38064: virtio: break and reset virtio devices on device_shutdown() (bsc#1245201).
    - CVE-2025-38074: vhost-scsi: protect vq->log_used with vq->mutex (bsc#1244735).
    - CVE-2025-38094: net: cadence: macb: Fix a possible deadlock in macb_halt_tx (bsc#1245649).
    - CVE-2025-38097: kabi: restore encap_sk in struct xfrm_state (bsc#1245660).
    - CVE-2025-38098: drm/amd/display: Do not treat wb connector as physical in (bsc#1245654).
    - CVE-2025-38099: Bluetooth: btusb: Fix regression in the initialization of fake Bluetooth controllers     (bsc#1245671).
    - CVE-2025-38100: x86/iopl: Cure TIF_IO_BITMAP inconsistencies (bsc#1245650).
    - CVE-2025-38105: ALSA: usb-audio: Kill timer properly at removal (bsc#1245682).
    - CVE-2025-38106: io_uring/sqpoll: do not put task_struct on tctx setup failure (bsc#1245664).
    - CVE-2025-38115: net_sched: sch_sfq: fix a potential crash on gso_skb handling (bsc#1245689).
    - CVE-2025-38117: hci_dev centralize extra lock (bsc#1245695).
    - CVE-2025-38126: net: stmmac: make sure that ptp_rate is not 0 before configuring timestamping     (bsc#1245708).
    - CVE-2025-38131: coresight: prevent deactivate active config while enabling the config (bsc#1245677).
    - CVE-2025-38132: coresight: holding cscfg_csdev_lock while removing cscfg from csdev (bsc#1245679).
    - CVE-2025-38147: calipso: unlock rcu before returning -EAFNOSUPPORT (bsc#1245768).
    - CVE-2025-38158: hisi_acc_vfio_pci: fix XQE dma address error (bsc#1245750).
    - CVE-2025-38162: netfilter: nft_set_pipapo: prevent overflow in lookup table allocation (bsc#1245752).
    - CVE-2025-38166: bpf: fix ktls panic with sockmap (bsc#1245758).
    - CVE-2025-38180: net: atm: fix /proc/net/atm/lec handling (bsc#1245970).
    - CVE-2025-38182: ublk: santizize the arguments from userspace when adding a device (bsc#1245937).
    - CVE-2025-38183: net: lan743x: fix potential out-of-bounds write in lan743x_ptp_io_event_clock_get()     (bsc#1246006).
    - CVE-2025-38187: drm/nouveau: fix a use-after-free in r535_gsp_rpc_push() (bsc#1245951).
    - CVE-2025-38188: drm/msm/a7xx: Call CP_RESET_CONTEXT_STATE (bsc#1246098).
    - CVE-2025-38200: i40e: fix MMIO write access to an invalid page in i40e_clear_hw (bsc#1246045).
    - CVE-2025-38202: bpf: Check rcu_read_lock_trace_held() in bpf_map_lookup_percpu_elem() (bsc#1245980).
    - CVE-2025-38203: jfs: Fix null-ptr-deref in jfs_ioc_trim (bsc#1246044).
    - CVE-2025-38204: jfs: fix array-index-out-of-bounds read in add_missing_indices (bsc#1245983).
    - CVE-2025-38206: exfat: fix double free in delayed_free (bsc#1246073).
    - CVE-2025-38210: configfs-tsm-report: Fix NULL dereference of tsm_ops (bsc#1246020).
    - CVE-2025-38212: ipc: fix to protect IPCS lookups using RCU (bsc#1246029).
    - CVE-2025-38220: ext4: only dirty folios when data journaling regular files (bsc#1245966).
    - CVE-2025-38222: ext4: inline: fix len overflow in ext4_prepare_inline_data (bsc#1245976).
    - CVE-2025-38236: af_unix: Disable MSG_OOB for unprivileged users (bsc#1246093).
    - CVE-2025-38239: scsi: megaraid_sas: Fix invalid node index (bsc#1246178).
    - CVE-2025-38244: smb: client: fix potential deadlock when reconnecting channels (bsc#1246183).
    - CVE-2025-38248: bridge: mcast: Fix use-after-free during router port configuration (bsc#1246173).
    - CVE-2025-38250: kABI workaround for bluetooth hci_dev changes (bsc#1246182).
    - CVE-2025-38256: io_uring/rsrc: fix folio unpinning (bsc#1246188).
    - CVE-2025-38264: llist: add interface to check if a node is on a list (bsc#1246387).
    - CVE-2025-38272: net: dsa: b53: do not enable EEE on bcm63xx (bsc#1246268).
    - CVE-2025-38279: selftests/bpf: Add tests with stack ptr register in conditional jmp (bsc#1246264).
    - CVE-2025-38283: hisi_acc_vfio_pci: bugfix live migration function without VF device driver     (bsc#1246273).
    - CVE-2025-38303: Bluetooth: eir: Fix possible crashes on eir_create_adv_data (bsc#1246354).
    - CVE-2025-38310: seg6: Fix validation of nexthop addresses (bsc#1246361).
    - CVE-2025-38323: net: atm: add lec_mutex (bsc#1246473).
    - CVE-2025-38334: x86/sgx: Prevent attempts to reclaim poisoned pages (bsc#1246384).
    - CVE-2025-38335: Input: gpio-keys - fix a sleep while atomic with PREEMPT_RT (bsc#1246250).
    - CVE-2025-38337: jbd2: fix data-race and null-ptr-deref in jbd2_journal_dirty_metadata() (bsc#1246253).
    - CVE-2025-38349: eventpoll: do not decrement ep refcount while still holding the ep mutex (bsc#1246777).
    - CVE-2025-38350: net/sched: Always pass notifications when child class becomes empty (bsc#1246781).
    - CVE-2025-38352: posix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del()     (bsc#1246911).
    - CVE-2025-38364: maple_tree: fix MA_STATE_PREALLOC flag in mas_preallocate() (bsc#1247091).
    - CVE-2025-38365: btrfs: fix a race between renames and directory logging (bsc#1247023).
    - CVE-2025-38375: virtio-net: ensure the received length does not exceed allocated size (bsc#1247177).
    - CVE-2025-38382: btrfs: fix iteration of extrefs during log replay (bsc#1247031).
    - CVE-2025-38392: idpf: convert control queue mutex to a spinlock (bsc#1247169).
    - CVE-2025-38396: fs: export anon_inode_make_secure_inode() and fix secretmem LSM bypass (bsc#1247156).
    - CVE-2025-38399: scsi: target: Fix NULL pointer dereference in core_scsi3_decode_spec_i_port()     (bsc#1247097).
    - CVE-2025-38403: vsock/vmci: Clear the vmci transport packet properly when initializing it (bsc#1247141).
    - CVE-2025-38414: wifi: ath12k: fix GCC_GCC_PCIE_HOT_RST definition for WCN7850 (bsc#1247145).
    - CVE-2025-38426: drm/amdgpu: Add basic validation for RAS header (bsc#1247252).
    - CVE-2025-38429: bus: mhi: ep: Update read pointer only after buffer is written (bsc#1247253).
    - CVE-2025-38453: kABI: io_uring: msg_ring ensure io_kiocb freeing is deferred (bsc#1247234).
    - CVE-2025-38455: KVM: SVM: Reject SEV{-ES} intra host migration if vCPU creation is in-flight     (bsc#1247101).
    - CVE-2025-38457: net/sched: Abort __tc_modify_qdisc if parent class does not exist (bsc#1247098).
    - CVE-2025-38460: atm: clip: Fix potential null-ptr-deref in to_atmarpd() (bsc#1247143).
    - CVE-2025-38461: vsock: Fix transport_* TOCTOU (bsc#1247103).
    - CVE-2025-38462: vsock: Fix transport_{g2h,h2g} TOCTOU (bsc#1247104).
    - CVE-2025-38463: tcp: Correct signedness in skb remaining space calculation (bsc#1247113).
    - CVE-2025-38465: netlink: make sure we allow at least one dump skb (bsc#1247118).
    - CVE-2025-38470: kABI fix for net: vlan: fix VLAN 0 refcount imbalance of toggling (bsc#1247288).
    - CVE-2025-38471: tls: always refresh the queue when reading sock (bsc#1247450).
    - CVE-2025-38475: smc: Fix various oops due to inet_sock type confusion (bsc#1247308).
    - CVE-2025-38497: usb: gadget: configfs: Fix OOB read on empty string write (bsc#1247347).
    - CVE-2025-38498: do_change_type(): refuse to operate on unmounted/not ours mounts (bsc#1247374).


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.

Linux/Unix 主机中安装的一个或多个程序包受到一个漏洞影响，而供应商没有提供补丁程序。

  - io_uring/rsrc修复 folio 取消固定 syzbot 所抱怨的取消映射失败[ 108.070381][ T14] kernel BUG at mm/gup.c:71! [ 108.070502][ T14] 内部错误Oops - BUG: 00000000f2000800 [#1] SMP [108.123672][ T14] 硬件名称QEMU KVM Virtual Machine、BIOS edk2-20250221-8.fc42 2025 年 2 月 21 日 [108.127458][ T14] 工作队列iou_exit io_ring_exit_work [ 108.174205][ T14] 调用跟踪[ 108.175649][T14] sanity_check_pinned_pages+0x7cc/0x7d0 (P) [ 108.178138][ T14] unpin_user_page+0x80/0x10c [108.180189][ T14] io_release_ubuf+0x84/0xf8 [ 108.182196][ T14] io_free_rsrc_node+0x250/0x57c [108.184345][ T14] io_rsrc_data_free+0x148/0x298 [ 108.186493][ T14] io_sqe_buffers_unregister+0x84/ 0xa0 [108.188991][ T14] io_ring_ctx_free+0x48/0x480 [ 108.191057][ T14] io_ring_exit_work+0x764/0x7d8 [108.193207][ T14] process_one_work+0x7e8/0x155c [ 108.195431][ T14] worker_thread+ 0x958/0xed8 [108.197561][ T14] kthread+0x5fc/0x75c [ 108.199362][ T14] ret_from_fork+0x10/0x20 我们可以固定 folio 的尾页但 io_uring 之后会尝试取消固定 folio 的 head 页面对开。虽然在保持页面实际活动方面它应该没有问题但 mm 的工作人员称这是错误的并会触发调试警告。使用 unpin_user_folio() 而非 unpin_user_page*。 [axboe适应当前树消息提交消息] (CVE-2025-38256)

请注意，Nessus 依赖供应商报告的程序包是否存在进行判断。

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
247992	Linux Distros Unpatched Vulnerability : CVE-2025-38256	Nessus	Misc.	2025/8/11	2025/8/11	high
247992	Linux Distros のパッチ未適用の脆弱性: CVE-2025-38256	Nessus	Misc.	2025/8/11	2025/8/11	high
247992	Linux Distros 未修補的弱點：CVE-2025-38256	Nessus	Misc.	2025/8/11	2025/8/11	high
252248	SUSE SLES15 Security Update : kernel (SUSE-SU-2025:02853-1)	Nessus	SuSE Local Security Checks	2025/8/19	2025/8/19	medium
247992	Linux Distros 未修补的漏洞：CVE-2025-38256	Nessus	Misc.	2025/8/11	2025/8/11	high

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