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Improper Validation of Specified Quantity in Input Affecting kernel-rt-debug-kvm package, versions *

Severity

 Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.02% (3rd percentile)

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  • Snyk IDSNYK-RHEL10-KERNELRTDEBUGKVM-12521353
  • published6 Sept 2025
  • disclosed5 Sept 2025
Report a new vulnerability Found a mistake?

Introduced: 5 Sep 2025

NewCVE-2025-39700  (opens in a new tab)
CWE-1284  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:10 kernel-rt-debug-kvm.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-debug-kvm package and not the kernel-rt-debug-kvm package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1