In the Linux kernel, the following vulnerability has been resolved:
mm/huge_memory: preserve pmd_swp_uffd_wp on device-private PMD downgrade
change_non_present_huge_pmd() rewrites a writable device-private PMD swap
entry into a readable one without carrying pmd_swp_uffd_wp() across. The
PTE-level change_softleaf_pte() does this correctly; mirror that here,
matching what copy_huge_pmd() does for the fork path. Without the carry,
a plain mprotect() over a UFFD_WP-marked device-private THP strips the bit
and the trap is bypassed on swap-in.
CVSS
No CVSS.
References
Configurations
No configuration.
History
No history.
Information
Published : 2026-08-15 06:21
Updated : 2026-08-17 06:18
NVD link : CVE-2026-72180
Mitre link : CVE-2026-72180
CVE.ORG link : CVE-2026-72180
JSON object : View
Products Affected
No product.
CWE
No CWE.