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I. Basic Information for CVE-2022-49991
Vulnerability Information

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Vulnerability Title
mm/hugetlb: avoid corrupting page->mapping in hugetlb_mcopy_atomic_pte
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mm/hugetlb: avoid corrupting page->mapping in hugetlb_mcopy_atomic_pte In MCOPY_ATOMIC_CONTINUE case with a non-shared VMA, pages in the page cache are installed in the ptes. But hugepage_add_new_anon_rmap is called for them mistakenly because they're not vm_shared. This will corrupt the page->mapping used by page cache code.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
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hugetlb_mcopy_atomic_pte中page->mapping损坏,可能导致非共享VMA错误。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
LinuxLinux f619147104c8ea71e120e4936d2b68ec11a1e527 ~ da60ddd80d09f8371fbba1a238a4b318d13ba698 -
LinuxLinux 5.13 -
II. Public POCs for CVE-2022-49991
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III. Intelligence Information for CVE-2022-49991
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