mm: swap: fix potential buffer overflow in setup_clusters() (Linux Linux)

CVE-2025-39727
HIGH 7.8

At a glance

Source
NVD
EPSS
EPSS 0.18 % · percentile 7 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Analyzed

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.

Weaknesses (CWE)

  • CWE-120 — Buffer Copy without Checking Size of Input

References

Scores

VersionScoreVectorScored by
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected b843786b0bd01ced7fcdbf3b033d68db2f7c61b2 < 91b370800b3f2b3dda244c0ab06719c4971190a5 ; affected b843786b0bd01ced7fcdbf3b033d68db2f7c61b2 < 9b01ada580ee84fb319e7ecb5fb5b1f54a9eb799 ; affected b843786b0bd01ced7fcdbf3b033d68db2f7c61b2 < 815c528b13f2bb9b3130c13bedeabf2351a68129 ; affected b843786b0bd01ced7fcdbf3b033d68db2f7c61b2 < 152c1339dc13ad46f1b136e8693de15980750835
Linux · Linuxaffected 6.12 ; unaffected 0 < 6.12 ; unaffected 6.12.42 ≤ 6.12.* ; unaffected 6.15.10 ≤ 6.15.* ; unaffected 6.16.1 ≤ 6.16.* ; unaffected 6.17 ≤ *

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD