CVE-2025-39700 (GCVE-0-2025-39700)

Vulnerability from cvelistv5 – Published: 2025-09-05 17:21 – Updated: 2026-05-11 21:34
VLAI
Title
mm/damon/ops-common: ignore migration request to invalid nodes
Summary
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. If users mistakenly make such invalid requests via DAMOS_MIGRATE_{HOT,COLD} action, the below kernel BUG can happen. [ 7831.883495] BUG: unable to handle page fault for address: 0000000000001f48 [ 7831.884160] #PF: supervisor read access in kernel mode [ 7831.884681] #PF: error_code(0x0000) - not-present page [ 7831.885203] PGD 0 P4D 0 [ 7831.885468] Oops: Oops: 0000 [#1] SMP PTI [ 7831.885852] CPU: 31 UID: 0 PID: 94202 Comm: kdamond.0 Not tainted 6.16.0-rc5-mm-new-damon+ #93 PREEMPT(voluntary) [ 7831.886913] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-4.el9 04/01/2014 [ 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) [...] [ 7831.895953] Call Trace: [ 7831.896195] <TASK> [ 7831.896397] __folio_alloc_noprof (mm/page_alloc.c:5183 mm/page_alloc.c:5192) [ 7831.896787] migrate_pages_batch (mm/migrate.c:1189 mm/migrate.c:1851) [ 7831.897228] ? __pfx_alloc_migration_target (mm/migrate.c:2137) [ 7831.897735] migrate_pages (mm/migrate.c:2078) [ 7831.898141] ? __pfx_alloc_migration_target (mm/migrate.c:2137) [ 7831.898664] damon_migrate_folio_list (mm/damon/ops-common.c:321 mm/damon/ops-common.c:354) [ 7831.899140] damon_migrate_pages (mm/damon/ops-common.c:405) [...] Add a target node validity check in damon_migrate_pages(). The validity check is stolen from that of do_pages_move(), which is being used for the move_pages() system call.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: b51820ebea656be3b48bb16dcdc5ad3f203c4fd7 , < 7c303fa1f311aadc17fa82b7bbf776412adf45de (git)
Affected: b51820ebea656be3b48bb16dcdc5ad3f203c4fd7 , < 9d0c2d15aff96746f99a7c97221bb8ce5b62db19 (git)
Affected: b51820ebea656be3b48bb16dcdc5ad3f203c4fd7 , < 7e6c3130690a01076efdf45aa02ba5d5c16849a0 (git)
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Linux Linux Affected: 6.11
Unaffected: 0 , < 6.11 (semver)
Unaffected: 6.12.44 , ≤ 6.12.* (semver)
Unaffected: 6.16.4 , ≤ 6.16.* (semver)
Unaffected: 6.17 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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            "value": "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]  \u003cTASK\u003e\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."
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        "id": "CVE-2025-39700",
        "lastModified": "2026-06-17T09:18:18.290",
        "metrics": {
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                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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        "published": "2025-09-05T18:15:47.003",
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      "cve": "CVE-2025-39700",
      "id": "CVE-2025-39700",
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      "product_status:known_affected": "76",
      "product_status:known_not_affected": "198",
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      "status": "final",
      "title": "kernel: mm/damon/ops-common: ignore migration request to invalid nodes",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-39700.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-28T16:58:41Z",
      "cve": "CVE-2025-39700",
      "id": "CVE-2025-39700",
      "initial_release_date": "2025-09-05T23:23:05Z",
      "product_status:first_fixed": "2",
      "product_status:known_not_affected": "517",
      "product_status:recommended": "154",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-39700",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-39700.json",
      "version": "27"
    }
  }
}



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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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