CVE-2022-49991

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.

CVSS Metrics

• v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.05%• Percentile: 16%

Affected Systems

• linux•linux

  ≥ f619147104c8ea71e120e4936d2b68ec11a1e527, < da60ddd80d09f8371fbba1a238a4b318d13ba698 | ≥ f619147104c8ea71e120e4936d2b68ec11a1e527, < 3ada1b3e58db255a14ec73a59d7913e84dc5a8a4 | ≥ f619147104c8ea71e120e4936d2b68ec11a1e527, < ab74ef708dc51df7cf2b8a890b9c6990fac5c0c6 | 5.13

• linux•linux_kernel

  ≥ 5.13, < 5.15.65 | ≥ 5.16, < 5.19.6 | 6.0:rc1 | 6.0:rc2

References (3)

• https://git.kernel.org/stable/c/da60ddd80d09f8371fbba1a238a4b318d13ba698
• https://git.kernel.org/stable/c/3ada1b3e58db255a14ec73a59d7913e84dc5a8a4
• https://git.kernel.org/stable/c/ab74ef708dc51df7cf2b8a890b9c6990fac5c0c6