{"id":"CVE-2025-39727","summary":"mm: swap: fix potential buffer overflow in setup_clusters()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nmm: swap: fix potential buffer overflow in setup_clusters()\n\nIn setup_swap_map(), we only ensure badpages are in range (0, last_page]. \nAs maxpages might be \u003c last_page, setup_clusters() will encounter a buffer\noverflow when a badpage is \u003e= maxpages.\n\nOnly call inc_cluster_info_page() for badpage which is \u003c maxpages to fix\nthe issue.","modified":"2026-04-02T12:48:08.063989Z","published":"2025-09-07T15:16:17.986Z","related":["SUSE-SU-2025:21074-1","SUSE-SU-2025:21139-1","SUSE-SU-2025:21179-1","openSUSE-SU-2025:20081-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39727.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/152c1339dc13ad46f1b136e8693de15980750835"},{"type":"WEB","url":"https://git.kernel.org/stable/c/815c528b13f2bb9b3130c13bedeabf2351a68129"},{"type":"WEB","url":"https://git.kernel.org/stable/c/91b370800b3f2b3dda244c0ab06719c4971190a5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9b01ada580ee84fb319e7ecb5fb5b1f54a9eb799"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39727.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-39727"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"b843786b0bd01ced7fcdbf3b033d68db2f7c61b2"},{"fixed":"91b370800b3f2b3dda244c0ab06719c4971190a5"},{"fixed":"9b01ada580ee84fb319e7ecb5fb5b1f54a9eb799"},{"fixed":"815c528b13f2bb9b3130c13bedeabf2351a68129"},{"fixed":"152c1339dc13ad46f1b136e8693de15980750835"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-39727.json"}}],"schema_version":"1.7.5"}