CVE-2025-39700: In the Linux kernel, the following vulnerability has been resolved: mm/damon/ops-common: ignore migration request to invalid nodes damon_migrate_pages() tries…

PriorityP421medium5.5CVSS 3.1

AVLACLPRLUINSUCNINAH

EPSS

0.14%

4.1th percentile

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] [ 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.

Affected

9 ranges

Vendor	Product	Version range	Fixed in
debian	linux	< linux 6.16.5-1 (forky)	linux 6.16.5-1 (forky)
linux	linux	—	—
linux	linux	>= b51820ebea656be3b48bb16dcdc5ad3f203c4fd7 < 7c303fa1f311aadc17fa82b7bbf776412adf45de	7c303fa1f311aadc17fa82b7bbf776412adf45de
linux	linux	>= b51820ebea656be3b48bb16dcdc5ad3f203c4fd7 < 9d0c2d15aff96746f99a7c97221bb8ce5b62db19	9d0c2d15aff96746f99a7c97221bb8ce5b62db19
linux	linux	>= b51820ebea656be3b48bb16dcdc5ad3f203c4fd7 < 7e6c3130690a01076efdf45aa02ba5d5c16849a0	7e6c3130690a01076efdf45aa02ba5d5c16849a0
linux	linux_kernel	>= 0 < 6.12.48-1	6.12.48-1
linux	linux_kernel	>= 0 < 6.16.5-1	6.16.5-1
linux	linux_kernel	>= 6.11 < 6.12.44	6.12.44
linux	linux_kernel	>= 6.13 < 6.16.4	6.16.4

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

osv5.5MEDIUM

vendor_debian5.5LOW

vendor_redhat5.5MEDIUM

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