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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade kernel6.12-libbpfUpgrade kernel6.12-libbpf-staticUpgrade kernel6.12-modules-extraUpgrade kernel6.12-debuginfoUpgrade python3-perf6.12Upgrade kernel6.12-modules-extra-commonUpgrade kernel6.12-tools-debuginfoUpgrade kernel6.12-debuginfo-common-x86_64Upgrade python3-perf6.12-debuginfoUpgrade kernel6.12-develUpgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel6.12-tools-develUpgrade perf6.12-debuginfoUpgrade kernel6.12-toolsUpgrade kernel6.12Upgrade kernel6.12-libbpf-debuginfoUpgrade kernel6.12-headersUpgrade perf6.12Upgrade bpftool6.12Upgrade kernel-livepatch-6.12.46-66.121Upgrade kernel6.12-libbpf-develUpgrade bpftool6.12-debuginfo | Sep 30, 2025 | Sep 5, 2025 |
| Debian | — | Upgrade linux | Jul 23, 2026 | Jul 23, 2026 |
| Oracle_linux | — | Upgrade kernel-uek | Nov 11, 2025 | Sep 5, 2025 |
| Suse | — | Upgrade dtb-nvidiaUpgrade gfs2-kmp-defaultUpgrade kernel-obs-buildUpgrade cluster-md-kmp-64kbUpgrade dtb-exynosUpgrade kernel-rt-optionalUpgrade kernel-sourceUpgrade kernel-source-vanillaUpgrade dlm-kmp-64kbUpgrade kselftests-kmp-defaultUpgrade dtb-amlogicUpgrade kernel-macrosUpgrade kselftests-kmp-64kbUpgrade dtb-sprdUpgrade kernel-defaultUpgrade kernel-docsUpgrade dtb-qcomUpgrade kernel-kvmsmall-vdsoUpgrade dtb-rockchipUpgrade kernel-rtUpgrade kernel-rt-livepatch-develUpgrade kernel-default-vdsoUpgrade cluster-md-kmp-defaultUpgrade kernel-rt-vdsoUpgrade kernel-64kb-extraUpgrade dlm-kmp-rtUpgrade kernel-kvmsmallUpgrade kernel-rt-extraUpgrade ocfs2-kmp-64kbUpgrade dtb-freescaleUpgrade kernel-default-develUpgrade kernel-64kbUpgrade dtb-mediatekUpgrade dtb-broadcomUpgrade kernel-rt-develUpgrade kernel-default-livepatchUpgrade kernel-64kb-optionalUpgrade gfs2-kmp-64kbUpgrade kernel-default-optionalUpgrade dtb-amazonUpgrade gfs2-kmp-rtUpgrade dtb-hisiliconUpgrade kernel-kvmsmall-develUpgrade dtb-xilinxUpgrade dtb-socionextUpgrade dtb-caviumUpgrade dtb-lgUpgrade dtb-armUpgrade kernel-rt-livepatchUpgrade kselftests-kmp-rtUpgrade kernel-64kb-develUpgrade ocfs2-kmp-rtUpgrade dtb-renesasUpgrade dtb-amdUpgrade dtb-alteraUpgrade kernel-zfcpdumpUpgrade kernel-symsUpgrade kernel-obs-qaUpgrade kernel-docs-htmlUpgrade dtb-marvellUpgrade dtb-appleUpgrade kernel-develUpgrade dtb-apmUpgrade ocfs2-kmp-defaultUpgrade dlm-kmp-defaultUpgrade dtb-allwinnerUpgrade cluster-md-kmp-rtUpgrade kernel-default-livepatch-develUpgrade kernel-default-extra | Dec 5, 2025 | Nov 6, 2025 |
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