CVE-2025-39727

HIGH

Linux Kernel < 6.12.42 - Buffer Overflow

Title source: rule
STIX 2.1

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.

Scores

CVSS v3 7.8
EPSS 0.0002
EPSS Percentile 4.8%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-120
Status published
Products (4)
linux/Kernel 6.12.0 - 6.12.42linux
linux/Kernel 6.13.0 - 6.15.10linux
linux/Kernel 6.16.0 - 6.16.1linux
linux/linux_kernel 6.12 - 6.12.42
Published Sep 07, 2025
Tracked Since Feb 18, 2026