Vulnerability in Linux

CVE-2022-49991

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.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (15.7th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 15.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2022-49991: held from 0.002 to 0.003.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.000

Affected products

  • Linux — versions f619147104c8ea71e120e4936d2b68ec11a1e527, 5.13, 0
  • Linux Kernel — versions 6.0

References

Frequently asked questions

What is CVE-2022-49991?
CVE-2022-49991 is a high-severity vulnerability in Linux. CVSS score: 7.8/10. Published 2025-06-18.
How severe is CVE-2022-49991?
High severity. CVSS v3 base score is 7.8 out of 10.