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。

  - s390/fpu修正 fpu_vstl() 中誤報的 kmsan 報告。執行 ping 命令時偵測到誤報的 kmsan 報告。內嵌組件指令「vstl」可根據「index」引數的值寫入不同數量的位元組。如果「index」> 0「vstl」會寫入至少 2 個位元組。 clang 會根據內嵌組件限制產生 kmsan 寫入協助程式呼叫。限制會在編譯時間進行評估但「index」引數的值只有在運行時間才能得知。 clang 目前會以 1 個位元組大小對 __msan_instrument_asm_store 產生呼叫。手動呼叫 kmsan 函式以指出寫入的正確位元組數量並修正誤判報告。此變更可修正下列 kmsan 報告[ 36.563119] ======================================= ============== [ 36.563594] 錯誤 KMSANvirtqueue_add+0x35c6/0x7c70 中的 uninit-value [ 36.563852] virtqueue_add+0x35c6/0x7c70 [ 36.564016] virtqueue_add_outbuf+0xa0/0xb0 [ 36.564266] start_xmit+0x288c/0x4a20 [ 36.564460] dev_hard_start_xmit+0x302/0x900 [ 36.564649] sch_direct_xmit+0x340/0xea0 [ 36.564894]
    __dev_queue_xmit+0x2e94/0x59b0 [ 36.565058] neigh_resolve_output+0x936/0xb40 [ 36.565278]
    __neigh_update+0x2f66/0x3a60 [ 36.565499] neigh_update+0x52/0x60 [ 36.565683] arp_process+0x1588/0x2de0 [36.565916] NF_HOOK+0x1da/0x240 [ 36.566087] arp_rcv+0x3e4/0x6e0 [ 36.566306]
    __netif_receive_skb_list_core+0x1374/0x15a0 [ 36.566527] netif_receive_skb_list_internal+0x1116/0x17d0 [36.566710] napi_complete_done+0x376/0x740 [ 36.566918] virtnet_poll+0x1bae/0x2910 [ 36.567130]
    __napi_poll+0xf4/0x830 [ 36.567294] net_rx_action+0x97c/0x1ed0 [ 36.567556] handle_softirqs+0x306/0xe10 [36.567731] irq_exit_rcu+0x14c/0x2e0 [ 36.567910] do_io_irq+0xd4/0x120 [ 36.568139] io_int_handler+0x2/0xe8 [ 36.568299] arch_cpu_idle+0xb0/0xc0 [ 36.568540] arch_cpu_idle+0x76/0xc0 [36.568726] default_idle_call+0x40/0x70 [ 36.568953] do_idle+0x1d6/0x390 [ 36.569486] cpu_startup_entry+0x9a/0xb0 [ 36.569745] rest_init +0x1ea/0x290 [ 36.570029] start_kernel+0x95e/0xb90 [36.570348] startup_continue+0x2e/0x40 [ 36.570703] [ 36.570798] Uninit 的建立於[ 36.571002] kmem_cache_alloc_node_noprof+0x9e8/0x10e0 [ 36.571261] kmalloc_reserve+ 0x12a/0x470 [ 36.571553]
    __alloc_skb+0x310/0x860 [ 36.571844] __ip_append_data+0x483e/0x6a30 [ 36.572170] ip_append_data+0x11c/0x1e0 [ 36.572477] raw_sendmsg+0x1c8c/0x2180 [ 36.572818] inet_sendmsg+0xe6/0x190 [36.5731425 ] /0x8sendto+0 [ 36.573392] __s390x_sys_socketcall+0x19ae/0x2ba0 [ 36.573571]
    __do_syscall+0x12e/0x240 [ 36.573823] system_call+0x6e/0x90 [ 36.573976] [ 36.574017] 98 個位元組 35 未初始化 [ 36.574082] 大小為 98 的記憶體存取從 0000000007aa0012 開始 [ 36.574218] [ 36.574325] CPU 0 UID0 PID0 通訊swapper/0 污染GBN 6.17.0-dirty #16 NONE [ 36.574541] 污染
    [B]=BAD_PAGE[N]=TEST [ 36.574617] 硬體名稱IBM 3931 A01 703 (KVM/Linux) [ 36.574755] ================== ================================== [ 63.532541] =========== ========================================== [ 63.533639] 錯誤KMSAN virtqueue_add+0x35c6/0x7c70 中的 uninit 值 [ 63.533989] virtqueue_add+0x35c6/0x7c70 [ 63.534940] virtqueue_add_outbuf+0xa0/0xb0 [ [ 63.535861] ] start_xmit+0x288c/0x4a20 [  63.536708] dev_hard_start_xmit+0x302/0x_xmit+0x302/ 63.5370200x_xmit +0x302/0x_xmit+0x302/0x_xmit+0x302/0x_xmit_sch +0x340/0xea0 [ 63.537997]
    __dev_queue_xmit+0x2e94/0x59b0 [ 63.538819] neigh_resolve_output+0x936/0xb40 [ 63.539793] ip_finish_output2+0x1ee2/0x2200 [ 63.540784] __ip_finish_output+0x272/0x7a0 [ 63.541765] ip_finish_output+0x4e/0x5e0 63.542791x0]4_10+0x1 [ 63.543771] ip_push_pending_frames+0x1a2/0x470 [ 63.544753] raw_sendmsg+0x1f06/0x2180 [ 63.545033] inet_sendmsg+0xe6/0x190 [ 63.546006] __sys_sendto+0x55e/0x8e0 ---truncated--- (CVE-2025-68751)

請注意，Nessus 的判定取決於廠商所報告的套件是否存在。

偵測

Linux Distros 未修補的弱點：CVE-2025-68751

medium Nessus Plugin ID 281753

版本 1.2