Resource management error in Linux kernel - CVE-2025-21869

Vulnerability identifier: #VU106131

CSH Severity: Low

CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: CVE-2025-21869

CWE-ID: CWE-399

Exploitation vector: Local access

Exploit availability: No public exploit available

Affected software:
Linux kernel
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Workstation Extension 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise Desktop 15
Public Cloud Module
Confidential Computing Module
SUSE Linux Enterprise Live Patching
SUSE Real Time Module
Legacy Module
Development Tools Module
Basesystem Module
openSUSE Leap
Ubuntu
APEX Cloud Platform for Microsoft Azure
kernel-livepatch-SLE15-SP6-RT_Update_10-debugsource
kernel-livepatch-6_4_0-150600_10_34-rt
kernel-livepatch-6_4_0-150600_10_34-rt-debuginfo
kernel-livepatch-6_4_0-150600_23_47-default-debuginfo
kernel-livepatch-SLE15-SP6_Update_10-debugsource
kernel-livepatch-6_4_0-150600_23_47-default
kernel-livepatch-6_4_0-150700_53_3-default
kernel-livepatch-6_4_0-150700_53_3-default-debuginfo
kernel-livepatch-SLE15-SP7_Update_1-debugsource
kernel-coco_debug-debuginfo
kernel-coco_debug
kernel-source-coco
kernel-devel-coco
reiserfs-kmp-coco-debuginfo
kernel-coco-vdso-debuginfo
kernel-coco-debuginfo
kernel-coco_debug-devel-debuginfo
kernel-coco_debug-debugsource
reiserfs-kmp-coco
kernel-coco-debugsource
kernel-coco_debug-devel
kernel-coco-devel
kernel-syms-coco
kernel-coco
kernel-syms-azure
kernel-azure-devel
gfs2-kmp-azure-debuginfo
kernel-source-azure
kernel-devel-azure
kernel-azure-vdso
kernel-azure-vdso-debuginfo
kernel-azure
dlm-kmp-azure
kernel-azure-debugsource
reiserfs-kmp-azure-debuginfo
cluster-md-kmp-azure-debuginfo
kernel-azure-optional
kernel-azure-devel-debuginfo
kselftests-kmp-azure-debuginfo
dlm-kmp-azure-debuginfo
kernel-azure-extra
kernel-azure-optional-debuginfo
ocfs2-kmp-azure-debuginfo
kselftests-kmp-azure
kernel-azure-debuginfo
reiserfs-kmp-azure
ocfs2-kmp-azure
cluster-md-kmp-azure
kernel-azure-extra-debuginfo
gfs2-kmp-azure
kernel-rt-devel
kernel-rt-devel-debuginfo
kernel-rt
kernel-rt_debug
kernel-source-rt
kernel-rt_debug-devel
kernel-rt_debug-vdso
kernel-devel-rt
kernel-rt-extra
kernel-rt-vdso
kernel-rt-optional
kernel-rt_debug-debuginfo
ocfs2-kmp-rt-debuginfo
kernel-rt-extra-debuginfo
cluster-md-kmp-rt-debuginfo
cluster-md-kmp-rt
gfs2-kmp-rt-debuginfo
reiserfs-kmp-rt-debuginfo
kernel-rt-vdso-debuginfo
kernel-rt_debug-devel-debuginfo
dlm-kmp-rt
kernel-rt-debugsource
reiserfs-kmp-rt
kernel-rt_debug-debugsource
ocfs2-kmp-rt
gfs2-kmp-rt
kselftests-kmp-rt
kernel-syms-rt
kernel-rt-livepatch-devel
kernel-rt-optional-debuginfo
kernel-rt_debug-vdso-debuginfo
kernel-rt-debuginfo
kselftests-kmp-rt-debuginfo
dlm-kmp-rt-debuginfo
dtb-rockchip
dtb-sprd
dtb-apple
kernel-obs-build-debugsource
kernel-obs-qa
dtb-apm
dtb-exynos
dtb-hisilicon
dtb-amd
dtb-amazon
dtb-marvell
dtb-aarch64
dtb-mediatek
dtb-xilinx
dtb-allwinner
dtb-renesas
dtb-cavium
dtb-broadcom
dtb-altera
dtb-socionext
dtb-qcom
kernel-syms
dtb-nvidia
dtb-lg
dtb-freescale
dtb-amlogic
dtb-arm
kernel-obs-build
kernel-docs-html
kernel-docs
kernel-64kb-extra-debuginfo
kernel-64kb-debugsource
kernel-64kb
reiserfs-kmp-64kb-debuginfo
cluster-md-kmp-64kb-debuginfo
reiserfs-kmp-64kb
dlm-kmp-64kb-debuginfo
gfs2-kmp-64kb
kernel-64kb-optional
dlm-kmp-64kb
cluster-md-kmp-64kb
kernel-64kb-debuginfo
gfs2-kmp-64kb-debuginfo
ocfs2-kmp-64kb-debuginfo
ocfs2-kmp-64kb
kernel-debug-vdso-debuginfo
kselftests-kmp-default-debuginfo
kernel-default-extra-debuginfo
kselftests-kmp-default
reiserfs-kmp-default
gfs2-kmp-default-debuginfo
cluster-md-kmp-default-debuginfo
kernel-kvmsmall-debugsource
kernel-macros
kernel-kvmsmall-devel-debuginfo
kernel-kvmsmall-debuginfo
kernel-kvmsmall-devel
kernel-kvmsmall-vdso-debuginfo
kernel-default-vdso-debuginfo
kernel-64kb-optional-debuginfo
kernel-debug-vdso
kernel-default-vdso
kernel-kvmsmall-vdso
kernel-debug-devel
kernel-debug-debuginfo
kernel-debug-debugsource
kernel-debug-devel-debuginfo
kernel-debug
kernel-64kb-devel-debuginfo
kernel-source-vanilla
kernel-source
kernel-devel
kernel-default-livepatch-devel
kernel-default-livepatch
kernel-default-optional
kernel-default-debuginfo
ocfs2-kmp-default
kernel-default-devel-debuginfo
ocfs2-kmp-default-debuginfo
kernel-default-debugsource
kernel-default
gfs2-kmp-default
kernel-kvmsmall
kernel-zfcpdump
kernel-zfcpdump-debugsource
kernel-zfcpdump-debuginfo
kselftests-kmp-64kb
kernel-64kb-devel
kernel-64kb-extra
kselftests-kmp-64kb-debuginfo
dlm-kmp-default-debuginfo
kernel-default-optional-debuginfo
reiserfs-kmp-default-debuginfo
cluster-md-kmp-default
kernel-default-devel
kernel-default-extra
dlm-kmp-default
kernel-default-base-rebuild
kernel-default-base
linux (Ubuntu package)
linux-gke (Ubuntu package)
linux-aws-6.8 (Ubuntu package)
linux-azure (Ubuntu package)
linux-oracle (Ubuntu package)
linux-raspi-realtime (Ubuntu package)
linux-lowlatency (Ubuntu package)
linux-aws (Ubuntu package)

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to resource management error within the __do_patch_instructions_mm() function in arch/powerpc/lib/code-patching.c. A local user can perform a denial of service (DoS) attack.

Install update from vendor's website.

• https://git.kernel.org/stable/c/5980d4456dd66d1b6505d5ec15048bd87e8775e0
• https://git.kernel.org/stable/c/dc9c5166c3cb044f8a001e397195242fd6796eee
• https://git.kernel.org/stable/c/ea291447a4031f3dac5c23d55bc83fe833820d84
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.13.5