1. Home
  2. Vulnerabilities
  3. CVE-2025-39754
4.7
MEDIUM CVSS 3.1
CVE-2025-39754
mm/smaps: fix race between smaps_hugetlb_range and migration
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().

INFO

Published Date :

Sept. 11, 2025, 5:15 p.m.

Last Modified :

Nov. 26, 2025, 4:20 p.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products

The following products are affected by CVE-2025-39754 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 MEDIUM [email protected]
Solution
Apply the kernel patch to hold the ptl lock in smaps_hugetlb_range.
  • Apply the Linux kernel patch.
  • Hold ptl lock in smaps_hugetlb_range function.
  • Rebuild and update the kernel.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-39754.

URL Resource
https://git.kernel.org/stable/c/09fc018f48871123ad5dbd7b03c956580232ed76 Patch
https://git.kernel.org/stable/c/2a1f3663974162b8f1e098196f557cfc1d160138 Patch
https://git.kernel.org/stable/c/45d19b4b6c2d422771c29b83462d84afcbb33f01 Patch
https://git.kernel.org/stable/c/b625883ccbcc2b57808db51d1375b1d7b9bcb3e5 Patch
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-39754 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-39754 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-39754 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2025-39754 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Initial Analysis by [email protected]

    Nov. 26, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
    Added CWE CWE-362
    Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.15.11 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.16 up to (excluding) 6.16.2 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.4 up to (excluding) 6.12.43
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/09fc018f48871123ad5dbd7b03c956580232ed76 Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/2a1f3663974162b8f1e098196f557cfc1d160138 Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/45d19b4b6c2d422771c29b83462d84afcbb33f01 Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/b625883ccbcc2b57808db51d1375b1d7b9bcb3e5 Types: Patch
  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Sep. 11, 2025

    Action Type Old Value New Value
    Added 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().
    Added Reference https://git.kernel.org/stable/c/09fc018f48871123ad5dbd7b03c956580232ed76
    Added Reference https://git.kernel.org/stable/c/2a1f3663974162b8f1e098196f557cfc1d160138
    Added Reference https://git.kernel.org/stable/c/45d19b4b6c2d422771c29b83462d84afcbb33f01
    Added Reference https://git.kernel.org/stable/c/b625883ccbcc2b57808db51d1375b1d7b9bcb3e5
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 4.7
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact