CVE-2026-72180
- Source
- https://cve.org/CVERecord?id=CVE-2026-72180
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72180.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-72180
- Downstream
- Published
- 2026-08-15T05:53:43Z
- Modified
- 2026-08-18T03:30:52Z
- Summary
- mm/huge_memory: preserve pmd_swp_uffd_wp on device-private PMD downgrade
- Details
-
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.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72180.json" }- References
-
- https://git.kernel.org/stable/c/2611f7521c6c124b1bef1be4fc319e0ca144502f
- https://git.kernel.org/stable/c/f7e2c21bd1f57cd5350eecdfdb5d6025ca6afbab
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72180.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-72180
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git