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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.13, < 5.15.65 |
References
- https://git.kernel.org/stable/c/3ada1b3e58db255a14ec73a59d7913e84dc5a8a4Patch
- https://git.kernel.org/stable/c/ab74ef708dc51df7cf2b8a890b9c6990fac5c0c6Patch
- https://git.kernel.org/stable/c/da60ddd80d09f8371fbba1a238a4b318d13ba698Patch
FAQ
What is CVE-2022-49991?
CVE-2022-49991 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 ...
How severe is CVE-2022-49991?
CVE-2022-49991 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-49991?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.