CVE-2025-39727
mm: swap: fix potential buffer overflow in setup_clusters()
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 7, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
b843786b0bd01ced7fcdbf3b033d68db2f7c61b2 < 91b370800b3f2b3dda244c0ab06719c4971190a5 b843786b0bd01ced7fcdbf3b033d68db2f7c61b2 < 9b01ada580ee84fb319e7ecb5fb5b1f54a9eb799 b843786b0bd01ced7fcdbf3b033d68db2f7c61b2 < 815c528b13f2bb9b3130c13bedeabf2351a68129 b843786b0bd01ced7fcdbf3b033d68db2f7c61b2 < 152c1339dc13ad46f1b136e8693de15980750835
Linux / Linux
6.12
References
git.kernel.org: https://git.kernel.org/stable/c/91b370800b3f2b3dda244c0ab06719c4971190a5 git.kernel.org: https://git.kernel.org/stable/c/9b01ada580ee84fb319e7ecb5fb5b1f54a9eb799 git.kernel.org: https://git.kernel.org/stable/c/815c528b13f2bb9b3130c13bedeabf2351a68129 git.kernel.org: https://git.kernel.org/stable/c/152c1339dc13ad46f1b136e8693de15980750835