CVE-2025-39727

HIGH EPSS 5.6%
Published Sep 7, 20259mo ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published Sep 7, 2025 9mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: mm: swap: fix potential buffer overflow in setup_clusters() In setup_swap_map(), we only ensure badpages are in range (0, last_page]. As maxpages might be < last_page, setup_clusters() will encounter a buffer overflow when a badpage is >= maxpages. Only call inc_cluster_info_page() for badpage which is < maxpages to fix the issue.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
5.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-120

Affected Products 3

VendorProductVersionRange
linuxlinux_kernel*≥6.12  –  <6.12.42
linuxlinux_kernel*≥6.13  –  <6.15.10
linuxlinux_kernel*≥6.16  –  <6.16.1

References 4

  • git.kernel.org https://git.kernel.org/stable/c/152c1339dc13ad46f1b136e8693de15980750835
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/815c528b13f2bb9b3130c13bedeabf2351a68129
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/91b370800b3f2b3dda244c0ab06719c4971190a5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9b01ada580ee84fb319e7ecb5fb5b1f54a9eb799
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/152c1339dc13ad46f1b136e8693de15980750835
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/815c528b13f2bb9b3130c13bedeabf2351a68129
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/91b370800b3f2b3dda244c0ab06719c4971190a5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9b01ada580ee84fb319e7ecb5fb5b1f54a9eb799
    Patch