漏洞信息
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Vulnerability Title
mm/smaps: fix race between smaps_hugetlb_range and migration
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mm/smaps: fix race between smaps_hugetlb_range and migration smaps_hugetlb_range() handles the pte without holdling ptl, and may be concurrenct with migration, leaing to BUG_ON in pfn_swap_entry_to_page(). The race is as follows. smaps_hugetlb_range migrate_pages huge_ptep_get remove_migration_ptes folio_unlock pfn_swap_entry_folio BUG_ON To fix it, hold ptl lock in smaps_hugetlb_range().
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
Linux kernel 安全漏洞
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于smaps_hugetlb_range未持有ptl锁，可能与迁移操作产生竞争条件，导致pfn_swap_entry_to_page中出现BUG_ON。
CVSS Information
N/A
Vulnerability Type
N/A