What is CVE-2025-21696?

CVE-2025-21696 is a medium-severity vulnerability in Linux. CVSS score: 5.5/10. Published 2025-02-12.

How severe is CVE-2025-21696?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Linux

CVE-2025-21696

In the Linux kernel, the following vulnerability has been resolved: mm: clear uffd-wp PTE/PMD state on mremap() When mremap()ing a memory region previously registered with userfaultfd as write-protected but without UFFD_FEATURE_EVENT_REM…

EPSS: 0.002 (7.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Linux — versions 63b2d4174c4ad1f40b48d7138e71bcb564c1fe03, 5.7, 0
Linux Linux_kernel — versions 6.13

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)

Frequently asked questions

What is CVE-2025-21696?: CVE-2025-21696 is a medium-severity vulnerability in Linux. CVSS score: 5.5/10. Published 2025-02-12.
How severe is CVE-2025-21696?: Medium severity. CVSS v3 base score is 5.5 out of 10.