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。

  - isdnmISDN修正從無效內容呼叫的休眠函式。驅動程式可以從不可部分完成內容呼叫 card->isac.release() 函式。可在釋放鎖定後呼叫此函式來修正此問題。下列記錄會顯示此問題[ 44.168226 ] 錯誤從 kernel/workqueue.c:3018 的無效內容呼叫休眠函式 [ 44.168941 ] in_atomic(): 1、irqs_disabled(): 1、non_block: 0、pid: 5475、 name
    modprobe [ 44.169574 ] 資訊lockdep 已關閉。 [ 44.169899 ] irq 事件戳記0 [ 44.170160 ] hardirqs 上次於 (0) 啟用 [<0000000000000000>] 0x0 [ 44.170627 ] hardirqs 上次停用於 (0)
    [<ffffffff814209ed>] copy_process+0x132d/0x3e00 [ 44.171240 ] softirqs 上次於 (0) 啟用
    [<ffffffff81420a1a>] copy_process+0x135a/0x3e00 [ 44.171852 ] softirqs 上次停用是在 (0)
    [<0000000000000000>] 0x0 [ 44.172318 ] 已在下列位置停用先佔 [ 44.172320 ] ] [<ffffffffa009b0a9>] nj_release+0x69/0x500 [netjet] [ 44.174441 ] 呼叫追踪[ 44.174630 ] dump_stack_lvl+0xa8/0xd1 [44.174912 ] dump_stack +0x15/0x17 [ 44.175166 ] ___might_sleep+0x3a2/0x510 [ 44.175459 ] ? nj_release+0x69/0x500 [netjet] [ 44.175791 ] __might_sleep+0x82/0xe0 [ 44.176063 ] ? start_flush_work+0x20/0x7b0 [ 44.176375 ] start_flush_work+0x33/0x7b0 [ 44.176672 ] ? trace_irq_enable_rcuidle+0x85/0x170 [ 44.177034 ] ? kasan_quarantine_put+0xaa/0x1f0 [ 44.177372 ] kasan_quarantine_put+0xaa/0x1f0 [ 44.177711 ] __flush_work+0x11a/0x1a0 [ 44.177991 ] ? flush_work+0x20/0x20 [ 44.178257 ] ? lock_release+0x13c/0x8f0 [ 44.178550 ] ?
    __kasan_check_write+0x14/0x20 [ 44.178872 ] ? do_raw_spin_lock+0x148/0x360 [ 44.179187 ] ? read_lock_is_recursive+0x20/0x20 [ 44.179530 ] ? __kasan_check_read+0x11/0x20 [ 44.179846 ] ? do_raw_spin_unlock+0x55/0x900 [ 44.180168 ] ? ____kasan_slab_free+0x116/0x140 [ 44.180505 ] ?
    _raw_spin_unlock_irqrestore+0x41/0x60 [ 44.180878 ] skb_queue_purge+0x1a3/0x1c0 [ 44.181189 ] ? kfree+0x13e/0x290 [ 44.181438 ] flush_work+0x17/0x20 [ 44.181695 ] mISDN_freedchannel+0xe8/0x100 [44.182006 ] isac_release+0x210/0x260 [mISDNipac] [ 44.182366 ] nj_release+0xf6/0x500 [netjet] [ 44.182685] nj_remove+0x48/0x70 [netjet] [ 44.182989 ] pci_device_remove+0xa9/0x250 (CVE-2021-47468)

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-2021-47468

medium Nessus Plugin ID 243721

版本 1.8

版本 1.7

版本 1.6

版本 1.2

版本 1.8 Jan 10, 2026, 7:58 PM Detection (updated detection logic) Plugin metadata Plugin Feed: 202601101958
版本 1.7 Oct 28, 2025, 5:56 PM Detection (updated detection logic) Plugin Feed: 202510281756
版本 1.6 Oct 27, 2025, 11:56 PM CVSS temporal metrics ("CVSSv2 temporal vector" set to "CVSS2#E:U/RL:U/RC:C") CVSS temporal metrics ("CVSSv3 temporal vector" set to "CVSS:3.0/E:U/RL:U/RC:C") Detection (updated detection logic) Plugin Feed: 202510272356
版本 1.2 Aug 21, 2025, 6:43 PM CVSS metrics ("Cvssv4 score" set to 0.0) CVSSv2 severity (based on None, severity decreased from "High" to "Low") Detection (updated detection logic) Plugin metadata Plugin Feed: 202508211843