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。

  - LoongArch修复 PREEMPT_RT Commit bab1c299f3945ffe79 的原子上下文中的休眠LoongArch修复 setup_tlb_handler() 中原子上下文中的休眠将 alloc_pages_node() 的 gfp 标记从 GFP_KERNEL 更改为 GFP_ATOMIC。然而，对于 PREEMPT_RT 内核我们仍然会收到一个在原子上下文中休眠的错误
    [ 0.372259] BUG从 kernel/locking/spinlock_rt.c:48 的无效上下文调用的休眠函数 [0.372266] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 0, name: swapper/ 1 [ 0.372268] preempt_count1，预期0 #00.3722700.372274RCU 嵌套深度 1， 0.372272预期1 >lock){+.+.}-{3:3}位于
    get_page_from_freelist+0x524/0x1c60 [ 0.372294] #190000000087013b8 (rcu_read_lock){....}-{1:3}位于
    rt_spin_trylock+0x50/0x140 [ 0.372305] #2900000047fffd388 (&zone->lock){+.+.}-{3:3}位于
    __rmqueue_pcplist+0x30c/0xea0 [ 0.372314] irq 事件标记0 [ 0.372316] hardirqs 上次启用的时间为 (0)
    [<0000000000000000>] 0x0 [ 0.372322] hardirqs 上次禁用的时间为 (0)[<9000000005947320>] copy_process+0x9c0/0x26e0 [ 0.372329] softirqs 上次启用的时间为 (0)[<9000000005947320>] copy_process+0x9c0/0x26e0 0.372335[  ] softirqs last disable at (0)[<0000000000000000>] 0x0 [ 0.372341] CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.12.0-rc7+ #1891 [ 0.372346] 硬件名称Loongson Loongson -3A5000-7A1000-1w-CRB/Loongson-LS3A5000-7A1000-1w-CRB, BIOS vUDK2018-LoongArch-V2.0.0-prebeta9 10/21/2022 [ 0.372349] Stack : 0000000000000089 9000000005a0db9c 90000000071519c8 9000000100388000 [0.372486] 900000010038b890 0000000000000000 900000010038b898 9000000007e53788 [ 0.372492] 900000000815bcc8 900000000815bcc0 900000010038b700 0000000000000001 [ 0.372498] 0000000000000001 4b031894b9d6b725 00000000055ec000 9000000100338fc0 [ 0.372503] 00000000000000c4 0000000000000001 000000000000002d 0000000000000003 [ 0.372509] 0000000000000030 0000000000000003 00000000055ec000 0000000000000003 [0.372515] 900000000806d000 9000000007e53788 00000000000000b0 0000000000000004 [ 0.372521] 0000000000000000 0000000000000000 900000000 c9f5f10 0000000000000000 [ 0.372526] 90000000076f12d8 9000000007e53788 9000000005924778 0000000000000000 [ 0.372532] 00000000000000b0 0000000000000004 0000000000000000 0000000000070000 [ 0.372537] ... [ 0.372540] Call Trace: [ 0.372542] [<9000000005924778>] show_stack+0x38/0x180 [ 0.372548] [<90000000071519c4>] dump_stack_lvl+0x94/0xe4 [ 0.372555] [<900000000599b880>] __might_resched+0x1a0/0x260 [ 0.372561] [<90000000071675cc>rt_spin_lock+0x4c/0x140 [ 0.372565] [<9000000005cbb768>] __rmqueue_pcplist+0x308/0xea0 [ 0.372570] [<9000000005cbed84>] get_page_from_freelist+0x564/0x1c60 [ 0.372575] [<9000000005cc0d98>] __alloc_pages_noprof+0x218/0x1820 [0.372580] [<900000000593b36c>tlb_init+0x1ac/0x298 [ 0.372585] [<9000000005924b74>] per_cpu_trap_init+0x114/0x140 [ 0.372589] [<9000000005921964>] cpu_probe+0x4e4/0xa60 [ 0.372592] [<9000000005934874>] start_secondary+0x34/0xc0 [ 0.372599] [<900000000715615c>] smpboot_entry+0x64/0x6c这是因为在 PREEMPT_RT 内核中正常的旋转锁被 rt 替换spinlocks 和 rt_spin_lock() 将造成休眠。通过完全禁用 PREEMPT_RT 内核的 NUMA 优化来修复此问题。
    (CVE-2024-56585)

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检测

Linux Distros 未修补的漏洞：CVE-2024-56585

medium Nessus 插件 ID 230994

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版本 1.1

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