CVE-2022-49991

MediumCVSS 5.5/10Last modified Aug 4, 2026

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.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected software

VendorProductVersions
LinuxLinux>= f619147104c8ea71e120e4936d2b68ec11a1e527, < da60ddd80d09f8371fbba1a238a4b318d13ba698; >= f619147104c8ea71e120e4936d2b68ec11a1e527, < 3ada1b3e58db255a14ec73a59d7913e84dc5a8a4; >= f619147104c8ea71e120e4936d2b68ec11a1e527, < ab74ef708dc51df7cf2b8a890b9c6990fac5c0c6
LinuxLinux5.13

References

Timeline

Published
Jun 18, 2025
Last modified
Aug 4, 2026
NVD status
Modified

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CVE-2022-49991: Medium severity, CVSS 5.5 | Vulnix