Riskcovery

CVE-2025-39727

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

State
Published
Severity
Not scored
Published
Sep 7, 2025
Updated
May 11, 2026
Reserved
Apr 16, 2025

Read the record on cve.org

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

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • b843786b0bd01ced7fcdbf3b033d68db2f7c61b2 to before 91b370800b3f2b3dda244c0ab06719c4971190a5Affected
  • b843786b0bd01ced7fcdbf3b033d68db2f7c61b2 to before 9b01ada580ee84fb319e7ecb5fb5b1f54a9eb799Affected
  • b843786b0bd01ced7fcdbf3b033d68db2f7c61b2 to before 815c528b13f2bb9b3130c13bedeabf2351a68129Affected
  • b843786b0bd01ced7fcdbf3b033d68db2f7c61b2 to before 152c1339dc13ad46f1b136e8693de15980750835Affected
LinuxLinux
  • 6.12Affected
  • before 6.12Not affected
  • 6.12.42 through 6.12.*Not affected
  • 6.15.10 through 6.15.*Not affected
  • 6.16.1 through 6.16.*Not affected
  • 6.17 and laterNot affected

References

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