{"id":"CVE-2025-39700","url":"https://www.cyber-defence.io/tools/cve/CVE-2025-39700","generatedAt":"2026-10-28T04:34:49.042Z","title":"In the Linux kernel, the following vulnerability has been resolved: mm/damon/ops-common: ignore migration request to invalid nodes damon_migrate_pages() tries migration even if the target node is invalid.","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmm/damon/ops-common: ignore migration request to invalid nodes\n\ndamon_migrate_pages() tries migration even if the target node is invalid. \nIf users mistakenly make such invalid requests via\nDAMOS_MIGRATE_{HOT,COLD} action, the below kernel BUG can happen.\n\n    [ 7831.883495] BUG: unable to handle page fault for address: 0000000000001f48\n    [ 7831.884160] #PF: supervisor read access in kernel mode\n    [ 7831.884681] #PF: error_code(0x0000) - not-present page\n    [ 7831.885203] PGD 0 P4D 0\n    [ 7831.885468] Oops: Oops: 0000 [#1] SMP PTI\n    [ 7831.885852] CPU: 31 UID: 0 PID: 94202 Comm: kdamond.0 Not tainted 6.16.0-rc5-mm-new-damon+ #93 PREEMPT(voluntary)\n    [ 7831.886913] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-4.el9 04/01/2014\n    [ 7831.887777] RIP: 0010:__alloc_frozen_pages_noprof (include/linux/mmzone.h:1724 include/linux/mmzone.h:1750 mm/page_alloc.c:4936 mm/page_alloc.c:5137)\n    [...]\n    [ 7831.895953] Call Trace:\n    [ 7831.896195]  <TASK>\n    [ 7831.896397] __folio_alloc_noprof (mm/page_alloc.c:5183 mm/page_alloc.c:5192)\n    [ 7831.896787] migrate_pages_batch (mm/migrate.c:1189 mm/migrate.c:1851)\n    [ 7831.897228] ? __pfx_alloc_migration_target (mm/migrate.c:2137)\n    [ 7831.897735] migrate_pages (mm/migrate.c:2078)\n    [ 7831.898141] ? __pfx_alloc_migration_target (mm/migrate.c:2137)\n    [ 7831.898664] damon_migrate_folio_list (mm/damon/ops-common.c:321 mm/damon/ops-common.c:354)\n    [ 7831.899140] damon_migrate_pages (mm/damon/ops-common.c:405)\n    [...]\n\nAdd a target node validity check in damon_migrate_pages().  The validity\ncheck is stolen from that of do_pages_move(), which is being used for the\nmove_pages() system call.","published":"2025-09-05T18:15:47.000Z","lastModified":"2026-10-19T21:10:00.000Z","status":"Analyzed","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","cvss":{"version":"3.1","score":5.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-1284"],"affected":["linux/linux kernel"],"epss":{"score":0.00157,"percentile":0.0482,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.16%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://git.kernel.org/stable/c/7c303fa1f311aadc17fa82b7bbf776412adf45de","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7e6c3130690a01076efdf45aa02ba5d5c16849a0","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/9d0c2d15aff96746f99a7c97221bb8ce5b62db19","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2025-39700","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}