Security tracker / CVE-2025-21696

CVE-2025-21696

mm: clear uffd-wp PTE/PMD state on mremap()

References

• Debian security tracker
• cve.org

Notes

 carnil> Introduced in 63b2d4174c4a ("userfaultfd: wp: add the writeprotect API to
 carnil> userfaultfd ioctl"). Vulnerable versions: 5.7-rc1.

Bugs

Status

Branch	Status
upstream	released (6.13) [0cef0bb836e3cfe00f08f9606c72abd72fe78ca3]
6.18-upstream-stable	N/A "Fixed before branching point"
6.17-upstream-stable	N/A "Fixed before branching point"
6.12-upstream-stable	released (6.12.11) [310ac886d68de661c3a334198d8604b722d7fdf8]
6.6-upstream-stable	needed
6.1-upstream-stable	needed
5.10-upstream-stable	needed
sid	released (6.12.11-1)
6.12-trixie-security	N/A "Fixed before branching point"
6.1-bookworm-security	needed
5.10-bullseye-security	needed