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添加架构特定 huge_pte_clear() 当执行 mm selftests run_vmtests.sh 时出现此错误BUG: Bad page state in process uffd-unit-tests pfn:00000 page: refcount:0 mapcount:0 mapping:0000000000000000 index :0x0 pfn:0x0 标记
    0xffff0000002000(reserved|node=0|zone=0|lastcpupid=0xffff) raw: 00ffff0000002000 ffffbf0000000008 ffffbf0000000008 0000000000000000 raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: snd_seq_dummy snd_seq snd_seq_device rfkill vfat fat virtio_balloon efi_pstore virtio_net pstore net_failover 故障转移熔丝 nfnetlink virtio_scsi virtio_gpu virtio_dma_buf dm_multipath efivarfs CPU2 UID: 0 PID1913 Comm: uffd-unit-tests 未受感染 6.12.0 #184 硬件名称QEMU QEMU 虚拟机BIOS 未知 2/2/2022 Stack
    900000047c8ac000 0000000000000000 9000000000223a7c 900000047c8ac000 900000047c8af690 900000047c8af698 0000000000000000 900000047c8af7d8 900000047c8af7d0 900000047c8af7d0 900000047c8af5b0 0000000000000001 0000000000000001 900000047c8af698 10b3c7d53da40d26 0000010000000000 0000000000000022 0000000fffffffff fffffffffe000000 ffff800000000000 000000000000002f 0000800000000000 000000017a6d4000 90000000028f8940 0000000000000000 0000000000000000 90000000025aa5e0 9000000002905000 0000000000000000 90000000028f8940 ffff800000000000 0000000000000000 0000000000000000 0000000000000000 9000000000223a94 000000012001839c 00000000000000b0 0000000000000004 0000000000000000 0000000000071c1d ... 调用跟踪 [<9000000000223a94>] show_stack+0x5c/0x180 [<9000000001c3fd64>] dump_stack_lvl+0x6c/0xa0 [<900000000056aa08>] bad_page+0x1a0/0x1f0 [<9000000000574978>] free_unref_folios+0xbf0/0xd20 [<90000000004e65cc>] folios_put_refs+0x1a4/0x2b8 [<9000000000599a0c>] free_pages_and_swap_cache+0x164/0x260 [<9000000000547698>] tlb_batch_pages_flush+0xa8/0x1c0 [<9000000000547f30>] tlb_finish_mmu+0xa8/0x218 [<9000000000543cb8>] exit_mmap+0x1a0/0x360 [<9000000000247658>] __mmput+0x78/0x200 [<900000000025583c>x ] dot /0xde8 [<9000000000256490>] do_group_exit+0x68/0x110 [<9000000000256554>] sys_exit_group+0x1c/0x20 [<9000000001c413b4>] do_syscall+0x94/0x130 [<90000000002216d8>] handle_syscall+0xb8/0x158 因内核感染 BUG 而禁用锁定调试非零释放 mm 时的 pgtables_bytes: -16384 在 LoongArch 系统上无效的大型 pte 条目应为 invalid_pte_table 或单个
    _PAGE_HUGE 位而不是零值。对于无效的 pmd 条目应该也是如此因为 pmd_none() 由函数 free_pgd_range() 调用而 pmd_none() 由 huge_pte_clear() 返回 0。如此单一
    _PAGE_HUGE 位也会被视为有效的 pte 表且会在 free_pmd_range() 中调用 free_pte_range()。 free_pmd_range() pmd = pmd_offset(pud, addr); do { next = pmd_addr_end(addr, end); if (pmd_none_or_clear_bad(pmd)) continue; free_pte_range(tlb, pmd, addr); } while (pmd++, addr = next, addr != end);此处的 invalid_pte_table 同时用于无效的大型 pte 条目和 pmd 条目。 (CVE-2024-56628)

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检测

Linux Distros 未修补的漏洞：CVE-2024-56628

high Nessus 插件 ID 231123

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