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。

  - fs/ntfs3添加对属性大小的溢出检查 如果属性具有极大的大小例如 0xffffff7f当解析 MFT 属性时偏移加法可能溢出或通过已使用的大小检查。如果尝试访问由 Add2Ptr(attr, asize) 派生的下一个属性可导致越界内存读取/写入 [32.963847] 缺陷无法处理地址 ffff956a83c76067 的页面错误 [ 32.964301] #PF内核模式中的主管读取访问 [ 32.964526] #PF: error_code(0x0000) - not-present page [ 32.964893] PGD 4dc01067 P4D 4dc01067 PUD 0 [ 32.965316] Oops0000 [#1] PREEMPT SMP NOPTI [ 32.965727] CPU: 0 PID: 243 Comm: mount Not tainted 5.19.0+ #6 [ 32.966050] 硬件名称QEMU Standard PC (i440FX + PIIX,1996)BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu。 org 2014 年 4 月 1 日 [ 32.966628] RIP
    0010:mi_enum_attr+0x44/0x110 [ 32.967239] Code89 f0 48 29 c8 48 89 c1 39 c7 0f 86 94 00 00 00 8b 56 04 83 fa 17 0f 86 88 00 00 00 89 d0 01 fa 48 01 08 39 f9a [ 32.968101] RSP: 0018:ffffba15c06a7c38 EFLAGS: 00000283 [ 32.968364] RAX: ffff956a83c76067 RBX: ffff956983c76050 RCX: 000000000000006f [32.968651] RDX: 0000000000000067 RSI: ffff956983c760e8 RDI: 00000000000001c8 [ 32.968963] RBP:
    ffffba15c06a7c38 R080000000000000064 R0900000000ffffff7f [ 32.969249] R100000000000000007 R11
    ffff956983c760e8 R12ffff95698225e000 [ 32.969870] R130000000000000000 R14ffffba15c06a7cd8 R15
    ffff95698225e170 [ 32.970655] FS: 00007fdab8189e40(0000) GS:ffff9569fdc00000(0000) knlGS:0000000000000000 [ 32.971098] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 32.971378] CR2: ffff956a83c76067 CR3:
    0000000002c58000 CR4: 00000000000006f0 [ 32.972098] 调用跟踪[ 32.972842] <TASK> [ 32.973341] ni_enum_attr_ex+0xda/0xf0 [ 32.974087] ntfs_iget5+0x1db/0xde0 [ 32.974386] ? slab_post_alloc_hook+0x53/0x270 [ 32.974778] ? ntfs_fill_super+0x4c7/0x12a0 [ 32.975115] ntfs_fill_super+0x5d6/0x12a0 [ 32.975336] get_tree_bdev+0x175/0x270 [ 32.975709] ? put_ntfs+0x150/0x150 [32.975956] ntfs_fs_get_tree+0x15/0x20 [ 32.976191] vfs_get_tree+0x2a/0xc0 [ 32.976374] ? capable+0x19/0x20 [ 32.976572] path_mount+0x484/0xaa0 [ 32.977025] ? putname+0x57/0x70 [ 32.977380] do_mount+0x80/0xa0 [32.977555] __x64_sys_mount+0x8b/0xe0 [ 32.978105] do_syscall_64+0x3b/0x90 [ 32.978830] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 32.979311] RIP: 0033:0x7f948a72e948ab72e948ab72e [ 32.980015] Code48 8b 0d 11 fa 2a 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 008 [ 32.981251] 32.982234R 32.981832SP
    0000557de0aaf2e0 RDI: 0000557de0ab7ce0 [ 32.982714] RBP: 0000000000000000 R08: 0000557de0aaf280 R09:
    0000000000000020 [ 32.983046] R10: 00000000c0ed0000 R11: 0000000000000206 R12: 0000557de0ab7ce0 [32.983494] R13: 0000557de0aaf260 R14: 0000000000000000 R15: 00000000ffffffff [ 32.984094] </TASK> [32.984352] Modules linked in: [ 32.984753] CR2: ffff956a83c76067 [ 32.985911] ---[ end trace 0000000000000000 ]--- [ 32.986555] RIP: 0010:mi_enum_attr+0x44/0x110 [ 32.987217] Code89 f0 48 29 c8 48 89 c1 39 c7 0f 86 94 00 00 00 8b 56 04 83 fa 17 0f 86 88 00 00 00 89 d0 01 ca 48 01 f0 8d 4a 08 39 f9a [32.988232] RSP: 0018:ffffba15c06a7c38 EFLAGS: 00000283 [ 32.988532] RAX: ffff956a83c76067 RBX:
    ffff956983c76050 RCX 000000000000006f [ 32.988916] RDX: 0000000000000067 RSI: ffff956983c760e8 RDI
    00000000000001c8 [ 32.989356] RBP: ffffba15c06a7c38 R08: 0000000000000064 R09: 00000000ffffff7f [32.989994] R10: 0000000000000007 R11: ffff956983c760e8 R12: ffff95698225e000 [ 32.990415] R13:
    0000000000000000 R14ffffba15c06a7cd8 R15ffff95698225e170 [ 32.991011] FS: ---truncated--- (CVE-2022-50841)

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-2022-50841

medium Nessus 插件 ID 280694

版本 1.2