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。

  - tipc修正 tipc_mon_reinit_self() 中的釋放後使用。 syzbot 報告 tipc_mon_reinit_self() 中的 tipc_net(net)->monitors[] 存在釋放後使用。 [0] 陣列受到 RTNL 保護但是 tipc_mon_reinit_self() 會在無 RTNL 的情況下對其進行反覆使用。 tipc_mon_reinit_self() 會從 tipc_net_finalize() 呼叫而該 tipc_net_finalize() 一律在 RTNL 之下但 tipc_net_finalize_work() 除外。讓我們在 tipc_net_finalize_work() 中保留 RTNL。 [0]BUGKASAN __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 中的 slab 釋放後使用 [內嵌] 錯誤 KASAN 中的 slab 釋放後使用
    _raw_spin_lock_irqsave+0xa7/0xf0 kernel/locking/spinlock.c:162 read of size 1 at addr ffff88805eae1030 by task kworker/0:7/5989 CPU0 UID0 PID5989 Commkworker/0:7 未受污染的 syzkaller #0 PREEMPT_ {RT(full)} 硬體名稱Google Google Compute Engine/Google Compute Engine、BIOS Google 08/18/2025 工作佇列事件 tipc_net_finalize_work 呼叫追踪 <TASK> dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 print_address_description mm/ kasan/report.c:378 [內嵌] print_report+0xca/0x240 mm/kasan/report.c:482 kasan_report+0x118/0x150 mm/kasan/report.c:595 __kasan_check_byte+0x2a/0x40 mm/kasan/common.c kasan_check_byte include/linux/kasan.h:399 [內嵌] lock_acquire+0x8d/0x360 kernel/locking/lockdep.c:5842 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [內嵌]
    _raw_spin_lock_irqsave+0xa7/0xf0 kernel/locking/spinlock.c:162 rtlock_slowlock kernel/locking/rtmutex.c:1894 [內嵌] rwbase_rtmutex_lock_state kernel/locking/spinlock_rt.c:160 [內嵌] rwbase_write_lock+0xd3/0x7e0 kernel/locking/rwbase_rt .c:244 rt_write_lock+0x76/0x110 kernel/locking/spinlock_rt.c:243 write_lock_bh include/linux/rwlock_rt.h:99 [內嵌] tipc_mon_reinit_self+0x79/0x430 net/tipc/monitor.c:718 tipc_net_finalize+0x115/0x190 net/tipc/net.c:140 process_one_work kernel/workqueue.c:3236 [內嵌] process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3319 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400 kthread+0x70e/0x8a0 核心/kthread.c:463 ret_from_fork+0x439/0x7d0 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 </TASK> 由工作 6089 分配kasan_save_stack mm/kasan/ common.c:47 [內嵌] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 pox_kmalloc_redzone mm/kasan/common.c:388 [內嵌] __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:405 kasan_kmalloc include/linux/kasan.h:260 [內嵌]
    __kmalloc_cache_noprof+0x1a8/0x320 mm/slub.c:4407 kmalloc_noprof include/linux/slab.h:905 [內嵌] kzalloc_noprof include/linux/slab.h:1039 [內嵌] tipc_mon_create+0xc3/0x4d0 net/tipc/monitor.c :657 tipc_enable_bearer net/tipc/bearer.c:357 [內嵌] __tipc_nl_bearer_enable+0xe16/0x13f0 net/tipc/bearer.c:1047 __tipc_nl_compat_doit net/tipc/netlink_compat.c:371 [內嵌] tipc_nl_compat_doit+0x3bc/0x5/tipc net /netlink_compat.c:393 tipc_nl_compat_handle net/tipc/netlink_compat.c:-1 [內嵌] tipc_nl_compat_recv+0x83c/0xbe0 net/tipc/netlink_compat.c:1321 genl_family_rcv_msg_doit+0x215/0x300 net/netlink/genetlink.c:1115genlmsrcgfamily_doit+0x215/0x300 net/netlink/genetlink.c:1115 /netlink/genetlink.c:1195 [內嵌] genl_rcv_msg+0x60e/0x790 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2552 genl_rcv+0x28/0x40 net/netlink/genetlink。 c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [內嵌] netlink_unicast+0x846/0xa10 net/netlink/af_netlink.c:1346 netlink_sendmsg+0x805/0xb30 net/netlink/a f_netlink.c:1896 sock_sendmsg_nosec net/socket.c:714 [內嵌] __sock_sendmsg+0x21c/0x270 net/socket.c:729____sys_sendmsg+0x508/0x820 net/socket.c:2614 ___sys_sendmsg+0x21f/0x2a0 net/socket.c :2668 __sys_sendmsg net/socket.c:2700 [內嵌]
    __do_sys_sendmsg net/socket.c:2705 [內嵌] __se_sys_sendmsg net/socket.c:2703 [內嵌]
    __x64_sys_sendmsg+0x1a1/0x260 net/socket.c:2703 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [內嵌] do_syscall_64+0xfa/0x3b0 arch/ ---truncated--- (CVE-2025-40280)

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-2025-40280

high Nessus Plugin ID 277686

版本 1.20