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。

  - f2fs修正以避免潛在的鎖死 正如 Jiaming Zhang 和 syzbot 報告的那樣f2fs 中可能存在鎖死如下&sbi->cp_rwsem --> fs_reclaim --> sb_internal#2 可能的不安全鎖定情況CPU0 CPU1 -- -- ---- rlock(sb_internal#2); lock(fs_reclaim); lock(sb_internal#2);
    rlock(&sbi->cp_rwsem); *** DEADLOCK *** kswapd0/73 保留的 3 個鎖定 #0ffffffff8e247a40 (fs_reclaim){+.+.}-{0:0}, at: balance_pgdat mm/vmscan.c:7015 [內嵌] #0: ffffffff8e247a40 (fs_reclaim){+.+.}-{0:0} 、at: kswapd+0x951/0x2800 mm/vmscan.c:7389 #1ffff8880118400e0 (&type->s_umount_key#50){.+.+}-{4:4}、at: super_trylock_shared fs/super.c:562 [內嵌] #1
    ffff8880118400e0 (&type->s_umount_key#50){.+.+}-{4:4}, at: super_cache_scan+0x91/0x4b0 fs/super.c:197 #2
    ffff888011840610 (sb_internal#2){.+.+}-{0:0}、@f2fs_evict_inode+0x8d9/0x1b60 fs/f2fs/inode.c:890 堆疊反向追踪 CPU0 UID0 PID73 Commkswapd0 未受污染syzkaller #0 PREEMPT(完整) 硬體名稱QEMU Standard PC (Q35 + ICH9, 2009)BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 呼叫追踪 <TASK> dump_stack_lvl+ 0x189/0x250 lib/dump_stack.c:120 print_circar_bug+0x2ee/0x310 kernel/locking/lockdep.c:2043 check_noncircuit+0x134/0x160 kernel/locking/lockdep.c:2175 check_prev_add kernel/locking/lockdep.c:3165 [內嵌] check_prevs_add kernel/locking/lockdep.c:3284 [內嵌] validate_chain+0xb9b/0x2140 kernel/locking/lockdep.c:3908 __lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5237 lock_acquire+0x120/0x360 kernel/locking /lockdep.c:5868 down_read+0x46/0x2e0 kernel/locking/rwsem.c:1537 f2fs_down_read fs/f2fs/f2fs.h:2278 [內嵌] f2fs_lock_op fs/f2fs/f2fs.h:2357 [內嵌] f2fs_do_truncate_blocks+0x21c/ 0x10c0 fs/f2fs/file.c:791 f2fs_truncate_blocks+0x10a/0x300 fs/f2fs/file.c:867 f2fs_trunca te+0x489/0x7c0 fs/f2fs/file.c:925 f2fs_evict_inode+0x9f2/0x1b60 fs/f2fs/inode.c:897 evict+0x504/0x9c0 fs/inode.c:810 f2fs_evict_inode+0x1dc/0x1b60 fs/f2fs/inode.c:810 f2fs_evict_inode+0x1dc/0x1b60 fs/f2fs/inode .c:853 evict+0x504/0x9c0 fs/inode.c:810 dispose_list fs/inode.c:852 [內嵌] prune_icache_sb+0x21b/0x2c0 fs/inode.c:1000 super_cache_scan+0x39b/0x4b0 fs/super.c 224 do_shrink_slab+0x6ef/0x1110 mm/shrinker.c:437 shrink_slab_memcg mm/shrinker.c:550 [內嵌] shrink_slab+0x7ef/0x10d0 mm/shrinker.c:628 shrink_one+0x28a/0x7c0 mm/vmscan.c:4955 shrink_many mm /vmscan.c:5016 [內嵌] lru_gen_shrink_node mm/vmscan.c:5094 [內嵌] shrink_node+0x315d/0x3780 mm/vmscan.c:6081 kswapd_shrink_node mm/vmscan.c:6941 [內嵌] balance_pgdat mm/vmscan.c 7124 [內嵌] kswapd+0x147c/0x2800 mm/vmscan.c:7389 kthread+0x70e/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch /x86/entry/entry_64.S:245 </TASK> 根本原因是下列四個鎖定的鎖死情況如下kswapd - fs_reclaim --- 鎖定 A - shrink _one - evict - f2fs_evict_inode - sb_start_intwrite --- Lock B - iput - evict - f2fs_evict_inode - sb_start_intwrite --- Lock B - f2fs_truncate - f2fs_truncate_blocks - f2fs_do_truncate_blocks - f2fs_lock_op --- Lock C ioctl - f2fs_ioc_commit_atomic_write - f2fs_lock_op --- Lock C - __f2fs_commit_atomic_write - __replace_atomic_write_block - f2fs_get_dnode_of_data -
    __get_node_folio - f2fs_check_nid_range - f2fs_handle_error - f2fs_record_errors - f2fs_down_write --- Lock D open - do_open - do_truncate - security_inode_need_killpriv - f2fs_getxattr - lookup_all_xattrs - f2fs_handle_error - f2fs_record_errors - f2fs_down_write --- Lock D - f2fs_commit_super - read_mapping_folio - filemap_alloc_folio_noprof - prepare_alloc_pages - fs_reclaim_acquire --- Lock答為了 ---truncated--- (CVE-2025-71065)

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-2025-71065

medium Nessus Plugin ID 283666

版本 1.12