CVE-2025-39754

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 24/100
Published: 2025-09-11 Modified: 2026-10-30 First seen: 2026-10-30 Status: active

Attack Surface

No Interaction

CVSS Vector Breakdown

AV: Local
AC: High
PR: Low
UI: None
S: Unchanged
C: None
I: None
A: High

Description

In the Linux kernel, the following vulnerability has been resolved: mm/smaps: fix race between smaps_hugetlb_range and migration smaps_hugetlb_range() handles the pte without holdling ptl, and may be concurrenct with migration, leaing to BUG_ON in pfn_swap_entry_to_page(). The race is as follows. smaps_hugetlb_range migrate_pages huge_ptep_get remove_migration_ptes folio_unlock pfn_swap_entry_folio BUG_ON To fix it, hold ptl lock in smaps_hugetlb_range().

Weakness Classification (1)

Affected Software (9)

VendorProductVersion
Linux Linux 25ee01a2fca02dfb5a3ce316e77910c468108199 < 37ee0d97298b0547cb26b6957ccfea2d356bd0e7
Linux Linux 25ee01a2fca02dfb5a3ce316e77910c468108199 < f76089018b34dbe0c2e9b67c5b7d8860668748bb
Linux Linux 25ee01a2fca02dfb5a3ce316e77910c468108199 < 2a1f3663974162b8f1e098196f557cfc1d160138
Linux Linux 25ee01a2fca02dfb5a3ce316e77910c468108199 < 09fc018f48871123ad5dbd7b03c956580232ed76
Linux Linux 25ee01a2fca02dfb5a3ce316e77910c468108199 < b625883ccbcc2b57808db51d1375b1d7b9bcb3e5
Linux Linux 25ee01a2fca02dfb5a3ce316e77910c468108199 < 45d19b4b6c2d422771c29b83462d84afcbb33f01
Linux Linux 4.4
linux linux_kernel 4.4 – 6.12.43
linux linux_kernel 6.17

Bug Bounty Relevance

24 / 100
✓ No user interaction

CVSS Score

4.7 / 10.0 v3.1
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.14%
Raw Score 0.001400
Percentile 3.3%
Date 2026-11-01

EPSS Trend

2026-11-01
0.00140
2026-10-31
0.00140
2026-10-30
0.00139
2026-10-29
0.00139

Intelligence Sources

mitre ref →
nvd ref →