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。

  - drop_monitor修复不正确的初始化顺序 Syzkaller 报告以下缺陷BUG旋转锁 bad magic CPU#1、syz-executor.0/7995 lock: 0xffff88805303f3e0、.magic: 00000000、.owner: <none>/-1、.owner_cpu 0 CPU1 PID7995 Commsyz-executor.0 TaintedGE 5.10.209+ #1 硬件名称VMware, Inc.
    VMware Virtual Platform/440BX Desktop Reference 平台BIOS 6.00 2020 年 11 月 12 日调用跟踪__dump_stack lib/dump_stack.c:77 [内联] dump_stack+0x119/0x179 lib/dump_stack.c:118 debug_spin_lock_before kernel/locking/spinlock_debug。 c:83 [内联] do_raw_spin_lock+0x1f6/0x270 kernel/locking/spinlock_debug.c:112 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:117 [内联]
    _raw_spin_lock_irqsave+0x50/0x70 kernel/locking/spinlock.c:159 reset_per_cpu_data+0xe6/0x240 [drop_monitor] net_dm_cmd_trace+0x43d/0x17a0 [drop_monitor] genl_family_rcv_msg_doit+0x22f/0x330 net/netlink/genetlink.c:739 genl_family_rcv_msg net/netlink/genetlink .c:783 [inline] genl_rcv_msg+0x341/0x5a0 net/netlink/genetlink.c:800 netlink_rcv_skb+0x14d/0x440 net/netlink/af_netlink.c:2497 genl_rcv+0x29/0x40 net/netlink/genetlink.c:811 netlink_unicast_kernel net/netlink/af_netlink.c:1322 [内联] netlink_unicast+0x54b/0x800 net/netlink/af_netlink.c:1348 netlink_sendmsg+0x914/0xe00 net/netlink/af_netlink.c:1916 sock_sendmsg_nosec net/socket.c:651 [内联]
    __sock_sendmsg+0x157/0x190 net/socket.c:663____sys_sendmsg+0x712/0x870 net/socket.c:2378
    ___sys_sendmsg+0xf8/0x170 net/socket.c:2432 __sys_sendmsg+0xea/0x1b0 net/socket.c:2461 do_syscall_64+0x30/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x62/0xc7 RIP
    0033:0x7f3f9815aee9 代码ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 00 4c <48> [2f d0 4c ] 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP002b:00007f3f972bf0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX
    00007f3f9826d050 RCX: 00007f3f9815aee9 RDX: 0000000020000000 RSI: 0000000020001300 RDI: 0000000000000007 RBP: 00007f3f981b63bd R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11:
    0000000000000246 R120000000000000000 R13000000000000006e R1400007f3f9826d050 R15: 00007ffe01ee6768 如果 drop_monitor 构建为内核模块syzkaller 在加载期间可能有时间发送 netlink_START_CM_DM_ 消息。这将调用使用尚未初始化的旋转锁的 net_dm_monitor_start() 函数。若要修复此问题，将资源初始化放在通用 netlink 系列的注册上方。由 InfoTeCS 代表 Linux Verification Center (linuxtesting.org) 通过 Syzkaller 发现。 (CVE-2025-21862)

请注意，Nessus 依赖供应商报告的程序包是否存在进行判断。

检测

Linux Distros 未修补的漏洞：CVE-2025-21862

medium Nessus 插件 ID 247578

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