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。

  - smb用戶端修正 cifs_fill_dirent 中的釋放後使用。readdir 並行處理程序中有一個爭用情形其可能會在 rsp 緩衝區釋放後對其進行存取進而觸發下列 KASAN 警告。 ================================================== ================ 錯誤KASAN在 cifs_fill_dirent+0xb03/0xb60 中發生 slab 釋放後使用 [cifs] 工作 a.out/342975 在 addr ffff8880099b819c 讀取大小為 4 CPU2 UID 0 PID342975 通訊a.out 未受污染的 6.15.0-rc6+ #240 PREEMPT(完整) 硬體名稱 QEMU Standard PC (i440FX + PIIX, 1996)BIOS 1.16.1-2.fc37 04 /01/2014 呼叫追踪 <TASK> dump_stack_lvl+0x53/0x70 print_report+0xce/0x640 kasan_report+0xb8/0xf0 cifs_fill_dirent+0xb03/0xb60 [cifs] cifs_readdir+0x12cb/0x3190 [cifs] iterate_dir+0x1a1/0xdents520x1x34/sys_2get do_syscall_64+0x4b/0x110 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7f996f64b9f9 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0d f7 c3 0c 00 f7 d8 64 89 8 RSP: 002b:00007f996f53de78 EFLAGS: 00000207 ORIG_RAX: 000000000000004e RAX: ffffffffffffffda RBX: 00007f996f53ecdc RCX: 00007f996f64b9f9 RDX:
    0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007f996f53dea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000207 R12: ffffffffffffff88 R13:
    0000000000000000 R14: 00007ffc8cd9a500 R15: 00007f996f51e000 </TASK> 由工作 408 配置
    kasan_save_stack+0x20/0x40 kasan_save_track+0x14/0x30 __kasan_slab_alloc+0x6e/0x70 kmem_cache_alloc_noprof+0x117/0x3d0 mempool_alloc_noprof+0xf2/0x2c0 cifs_buf_get+0x36/0x80 [cifs] allocate_buffers+0x1d2/0x330 [cifs] cifs_demultiplex_thread+0x22b/0x2690 [cifs] kthread +0x394/0x720 ret_from_fork+0x34/0x70 ret_from_fork_asm+0x1a/0x30 Freed by task 342979: kasan_save_stack+0x20/0x40 kasan_save_track+0x14/0x30 kasan_save_free_info+0x3b/0x60 __kasan_slab_free+0x37/0x50 kmem_cache_free+0x2b8/0x500 cifs_buf_release+0x3c/0x70 [ cifs] cifs_readdir+0x1c97/0x3190 [cifs] iterate_dir+0x1a1/0x520 __x64_sys_getdents64+0x134/0x220 do_syscall_64+0x4b/0x110 entry_SYSCALL_64_after_hwframe+0x76/0x7e The buggy address belongs to the object at ffff8880099b8000 which belongs to the cache cifs_request of size 16588 The buggy位址位於已釋放的 16588 位元組區域內 412 位元組 [ffff8880099b8000、ffff8880099bc0cc) 錯誤位址屬於實體頁面
    page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x99b8 head: order:3 mapcount:0 whole_mapcount:0 nr_pages_mapped:0 pincount:0 anon 旗標0x8000000000040(head|node=0|zone=1) page_type在
    f5(slab) raw: 0080000000000040 ffff888001e03400 0000000000000000 dead000000000001 raw: 0000000000000000 0000000000010001 00000000f5000000 0000000000000000 head: 0080000000000040 ffff888001e03400 0000000000000000 dead000000000001 head: 0000000000000000 0000000000010001 00000000f5000000 0000000000000000 head: 0080000000000003 ffffea0000266e01 00000000ffffffff 00000000ffffffff head:
    ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8880099b8080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880099b8100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff8880099b8180fb fb fb fb fb fb fb fb fb fb fb ^ ffff8880099b8200fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880099b8280 b fb fb fb fb fb fb fb fb fb fb fb fb fb fb ====================================== ============================ POC 可在 連結 [1] 中取得。觸發處理程序的問題如下 處理程序 1 處理程序 2 -----------------------------------
    ---truncated--- (CVE-2025-38051)

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Linux Distros 未修補的弱點：CVE-2025-38051

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版本 1.27