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。

  - net-sysfs新增 netdevice 存在的檢查至 speed_show 關閉 netdevice 或系統關機時在存取 sysfs 路徑時可能會觸發不穩定的情況因為裝置已經移除。 [755.549084] mlx5_core 0000:12:00.1呼叫了關機 [ 756.404455] mlx5_core 0000:12:00.0呼叫了關機... [ 757.937260] 錯誤無法處理 (null) 的核心 NULL 指標解除參照 [ 758.031397] IP
    [<ffffffff8ee11acb>] dma_pool_alloc+0x1ab/0x280 當機> bt ... PID12649 TASKffff8924108f2100 CPU1 COMMANDamsd ... #9 [ffff89240e1a38b0] page_fault at ffffffff8f38c778 [例外狀況 RIP
    dma_pool_alloc+0x1ab] RIP: ffffffff8ee11acb RSP: ffff89240e1a3968 RFLAGS: 00010046 RAX: 0000000000000246 RBX: ffff89243d874100 RCX: 0000000000001000 RDX: 0000000000000000 RSI: 0000000000000246 RDI:
    ffff89243d874090 RBP: ffff89240e1a39c0 R8: 000000000001f080 R9: ffff8905ffc03c00 R10: ffffffffc04680d4 R11: ffffffff8edde9fd R12: 00000000000080d0 R13: ffff89243d874090 R14: ffff89243d874080 R15:
    0000000000000000 ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018 #10 [ffff89240e1a39c8] mlx5_alloc_cmd_msg at ffffffffc04680f3 [mlx5_core] #11 [ffff89240e1a3a18] cmd_exec at ffffffffc046ad62 [mlx5_core] #12 [ffff89240e1a3ab8] mlx5_cmd_exec at ffffffffc046b4fb [mlx5_core] #13 [ffff89240e1a3ae8] mlx5_core_access_reg at ffffffffc0475434 [mlx5_core] #14 [ffff89240e1a3b40] mlx5e_get_fec_caps at ffffffffc04a7348 [mlx5_core] #15 [ffff89240e1a3bb0] get_fec_supported_advertised at ffffffffc04992bf [mlx5_core] #16 [ffff89240e1a3c08] mlx5e_get_link_ksettings at ffffffffc049ab36 [mlx5_core] #17 [ffff89240e1a3ce8] __ethtool_get_link_ksettings at ffffffff8f25db46 #18 [ffff89240e1a3d48] speed_show at ffffffff8f277208 #19 [ffff89240e1a3dd8] dev_attr_show at ffffffff8f0b70e3 #20 [ffff89240e1a3df8] sysfs_kf_seq_show at ffffffff8eedbedf #21 [ffff89240e1a3e18] kernfs_seq_show at ffffffff8eeda596 #22 [ffff89240e1a3e28] seq_read at ffffffff8ee76d10 #23 [ffff89240e1a3e98] kernfs_fop_read at ffffffff8eedaef5 #24 [ffff89240e1a3 ed8] ffffffff8ee4e3ff 的 vfs_read #25 [ffff89240e1a3f08] ffffffff8ee4f27f 的 sys_read #26 [ffff89240e1a3f50] system_call_fastpath at ffffffff8f395f92 crash> net_device.state ffff89443b0c0000 狀態 = 0x5 (__LINK_STATESTART_|_STATE __LINK_STATE_NOCARRIER) 為防止此情況我們也會確認 netdevice 已存在。 (CVE-2022-48850)

請注意，Nessus 依賴供應商報告的套件存在。

偵測

Linux Distros 未修補的弱點：CVE-2022-48850

medium Nessus Plugin ID 225417

版本 1.12