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CVE-2025-39727

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CVE-2025-39727

Published: Sep 7, 2025

Modified: May 11, 2026

PUBLISHED

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.

VendorProductVersions

Linux

Linux

affected
b843786b0bd01ced7fcdbf3b033d68db2f7c61b2 - < 91b370800b3f2b3dda244c0ab06719c4971190a5
affected
b843786b0bd01ced7fcdbf3b033d68db2f7c61b2 - < 9b01ada580ee84fb319e7ecb5fb5b1f54a9eb799
affected
b843786b0bd01ced7fcdbf3b033d68db2f7c61b2 - < 815c528b13f2bb9b3130c13bedeabf2351a68129
affected
b843786b0bd01ced7fcdbf3b033d68db2f7c61b2 - < 152c1339dc13ad46f1b136e8693de15980750835

Linux

Linux

affected
6.12
unaffected
0 - < 6.12
unaffected
6.12.42 - <= 6.12.*
unaffected
6.15.10 - <= 6.15.*
unaffected
6.16.1 - <= 6.16.*

+1 more versions

References

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