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。

  - md/raid1: 当 raid1 数组运行失败时停止 mdx_raid1 线程仅当使用不活动磁盘组装数组时才能运行 raid1 数组失败但 mdx_raid1 线程不会停止即使已释放相关资源。当我们执行关机时它将导致空取消引用。这将导致以下 Oops[287.587787] BUG内核空指针取消引用地址0000000000000070 [ 287.594762] #PF内核模式下的主管读取访问 [ 287.599912] #PFerror_code(0x0000) - not-present 页面 [ 287.605061] PGD 0 P4D 0 [ 287.607612] Oops: 0000 [#1] SMP NOPTI [ 287.611287] CPU: 3 PID: 5265 Comm: md0_raid1 Tainted: GU 5.10.146 #0 [ 287.619029] 硬件名称: xxxxxxx/待填写OEM 报告、BIOS 5.19 06/16/2022 [ 287.626775] RIP: 0010:md_check_recovery+0x57/0x500 [md_mod] [ 287.632357] 代码fe 01 00 00 48 83 bb 10 03 00 00 00 74 08 48 89 . ...... [ 287.651118] RSP: 0018:ffffc90000433d78 EFLAGS: 00010202 [ 287.656347] RAX:
    0000000000000000 RBX: ffff888105986800 RCX: 0000000000000000 [ 287.663491] RDX: ffffc90000433bb0 RSI
    00000000ffffefff RDIffff888105986800 [ 287.670634] RBP: ffffc90000433da0 R080000000000000000 R09
    c0000000ffffefff [ 287.677771] R10: 0000000000000001 R11: ffffc90000433ba8 R12: ffff888105986800 [287.684907] R13: 0000000000000000 R14: fffffffffffffe00 R15: 0ffffb:68510 287.692052[FS ] 0 ffff888105986800
    0000000000000000(0000) GS:ffff888277f80000(0000) knlGS:0000000000000000 [ 287.700149] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 287.705897] CR2: 0000000000000070 CR3: 000000000320a000 CR4:
    0000000000350ee0 [ 287.713033] 调用跟踪 [ 287.715498] raid1d+0x6c/0xbbb [raid1] [ 287.719256] ?
    __schedule+0x1ff/0x760 [ 287.722930] ? schedule+0x3b/0xb0 [ 287.726260] ? schedule_timeout+0x1ed/0x290 [287.730456] ? __switch_to+0x11f/0x400 [ 287.734219] md_thread+0xe9/0x140 [md_mod] [ 287.738328] ? md_thread+0xe9/0x140 [md_mod] [ 287.742601] ? wait_woken+0x80/0x80 [ 287.746097] ? md_register_thread+0xe0/0xe0 [md_mod] [ 287.751064] kthread+0x11a/0x140 [ 287.754300] ? kthread_ark+0x90/0x90 [ 287.757974] ret_from_fork+0x1f/0x30 实际上当 raid1 阵列运行失败时我们需要在 raid1_free() 之前执行 md_unregister_thread()。 (CVE-2022-50715)

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-2022-50715

medium Nessus 插件 ID 279870

版本 1.12