NULL pointer dereference in Linux kernel - CVE-2025-23131

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Main Vulnerability Database Vulnerabilities #VU107704

NULL pointer dereference in Linux kernel - CVE-2025-23131

Published: April 22, 2025 / Updated: May 10, 2025


Vulnerability identifier: #VU107704
CSH Severity: Low
CVSS v4 BT: 4.3 [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-2025-23131
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

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

The vulnerability exists due to NULL pointer dereference within the new_lockspace() function in fs/dlm/lockspace.c. A local user can perform a denial of service (DoS) attack.


Affected software

Linux kernel
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
Debian Linux
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise Workstation Extension 15
SUSE Linux Enterprise Live Patching
Public Cloud Module
Confidential Computing Module
SUSE Real Time Module
Basesystem Module
Development Tools Module
Legacy Module
openSUSE Leap
Anolis OS
openEuler
Ubuntu
kgraft-patch-4_12_14-122_258-default
kernel-livepatch-6_4_0-150600_10_39-rt
kernel-livepatch-6_4_0-150600_10_39-rt-debuginfo
kernel-livepatch-SLE15-SP6-RT_Update_11-debugsource
kernel-livepatch-6_4_0-150700_7_3-rt-debuginfo
kernel-livepatch-6_4_0-150700_7_3-rt
kernel-livepatch-SLE15-SP7-RT_Update_1-debugsource
kernel-livepatch-6_4_0-150700_53_3-default-debuginfo
kernel-livepatch-SLE15-SP7_Update_1-debugsource
kernel-livepatch-6_4_0-150700_53_3-default
dlm-kmp-default
kernel-default-man
kernel-default-kgraft
gfs2-kmp-default
kernel-default-kgraft-devel
kernel-source
kernel-macros
kernel-default
kernel-devel
cluster-md-kmp-default
kernel-default-base-debuginfo
cluster-md-kmp-default-debuginfo
kernel-syms
dlm-kmp-default-debuginfo
kernel-default-debugsource
kernel-default-devel-debuginfo
kernel-default-base
ocfs2-kmp-default
kernel-default-debuginfo
ocfs2-kmp-default-debuginfo
gfs2-kmp-default-debuginfo
kernel-default-devel
kernel-coco_debug
kernel-coco
kernel-syms-coco
kernel-coco-devel
kernel-coco_debug-devel
kernel-coco-debugsource
reiserfs-kmp-coco
kernel-coco_debug-debugsource
kernel-coco_debug-devel-debuginfo
kernel-coco-debuginfo
kernel-coco-vdso-debuginfo
reiserfs-kmp-coco-debuginfo
kernel-devel-coco
kernel-source-coco
kernel-coco_debug-debuginfo
gfs2-kmp-azure-debuginfo
kernel-azure-optional
kernel-azure-debugsource
kernel-azure-devel
cluster-md-kmp-azure-debuginfo
reiserfs-kmp-azure-debuginfo
kernel-azure-extra
kernel-azure-optional-debuginfo
ocfs2-kmp-azure
cluster-md-kmp-azure
dlm-kmp-azure
kernel-azure-extra-debuginfo
kselftests-kmp-azure-debuginfo
ocfs2-kmp-azure-debuginfo
kernel-source-azure
kernel-azure-vdso
kernel-azure-vdso-debuginfo
kernel-devel-azure
kernel-azure
dlm-kmp-azure-debuginfo
kernel-azure-debuginfo
kernel-azure-devel-debuginfo
gfs2-kmp-azure
kernel-syms-azure
reiserfs-kmp-azure
kselftests-kmp-azure
kernel-rt-optional
ocfs2-kmp-rt
kernel-rt-devel
dlm-kmp-rt
kernel-rt-debuginfo
kernel-rt_debug-devel-debuginfo
kernel-rt_debug-vdso
kernel-rt_debug-debuginfo
kernel-syms-rt
kernel-rt-extra-debuginfo
reiserfs-kmp-rt-debuginfo
kernel-rt-livepatch-devel
kselftests-kmp-rt-debuginfo
ocfs2-kmp-rt-debuginfo
gfs2-kmp-rt-debuginfo
cluster-md-kmp-rt-debuginfo
kernel-rt_debug-vdso-debuginfo
gfs2-kmp-rt
reiserfs-kmp-rt
kernel-rt-devel-debuginfo
kernel-rt_debug-debugsource
kernel-rt-optional-debuginfo
kernel-rt-vdso-debuginfo
dlm-kmp-rt-debuginfo
cluster-md-kmp-rt
kernel-rt-debugsource
kernel-rt-extra
kernel-rt-vdso
kernel-rt_debug-devel
kselftests-kmp-rt
kernel-source-rt
kernel-rt
kernel-rt_debug
kernel-devel-rt
kernel-default-livepatch-devel
kernel-default-livepatch
kernel-default-extra-debuginfo
kernel-default-extra
kernel-obs-build
reiserfs-kmp-default-debuginfo
reiserfs-kmp-default
kernel-64kb-devel
kernel-64kb
kernel-obs-build-debugsource
kernel-docs
kernel-zfcpdump-debugsource
kernel-zfcpdump-debuginfo
kernel-zfcpdump
kernel-64kb-devel-debuginfo
kernel-64kb-debuginfo
kernel-64kb-debugsource
python3-perf-debuginfo
python3-perf
perf-debuginfo
perf
kernel-tools-devel
kernel-tools-debuginfo
kernel-tools
kernel-headers
kernel-debugsource
kernel-debuginfo
bpftool-debuginfo
bpftool
kernel
kernel-tools-libs-devel
kernel-tools-libs
kernel-debug-devel
kernel-debug
linux (Debian package)
linux (Ubuntu package)
linux-aws (Ubuntu package)
linux-azure (Ubuntu package)

How to mitigate CVE-2025-23131

Install update from vendor's website.

Linux kernel - update to 6.14.2
kgraft-patch-4_12_14-122_258-default - update to 1-8.3.1
kernel-livepatch-6_4_0-150600_10_39-rt - update to 1-150600.1.3.2
kernel-livepatch-6_4_0-150600_10_39-rt-debuginfo - update to 1-150600.1.3.2
kernel-livepatch-SLE15-SP6-RT_Update_11-debugsource - update to 1-150600.1.3.2
kernel-livepatch-6_4_0-150700_7_3-rt-debuginfo - update to 1-150700.1.3.1
kernel-livepatch-6_4_0-150700_7_3-rt - update to 1-150700.1.3.1
kernel-livepatch-SLE15-SP7-RT_Update_1-debugsource - update to 1-150700.1.3.1
kernel-livepatch-6_4_0-150700_53_3-default-debuginfo - update to 1-150700.15.3.1
kernel-livepatch-SLE15-SP7_Update_1-debugsource - update to 1-150700.15.3.1
kernel-livepatch-6_4_0-150700_53_3-default - update to 1-150700.15.3.1
dlm-kmp-default - addressed in versions 4.12.14-122.258.1, 6.4.0-150700.53.3.1
kernel-default-man - update to 4.12.14-122.258.1
kernel-default-kgraft - update to 4.12.14-122.258.1
gfs2-kmp-default - addressed in versions 4.12.14-122.258.1, 6.4.0-150700.53.3.1
kernel-default-kgraft-devel - update to 4.12.14-122.258.1
kernel-source - addressed in versions 4.12.14-122.258.1, 6.4.0-150700.53.3.1
kernel-macros - addressed in versions 4.12.14-122.258.1, 6.4.0-150700.53.3.1
kernel-default - addressed in versions 4.12.14-122.258.1, 6.4.0-150700.53.3.1
kernel-devel - addressed in versions 4.12.14-122.258.1, 6.4.0-150700.53.3.1
cluster-md-kmp-default - addressed in versions 4.12.14-122.258.1, 6.4.0-150700.53.3.1
kernel-default-base-debuginfo - update to 4.12.14-122.258.1
cluster-md-kmp-default-debuginfo - addressed in versions 4.12.14-122.258.1, 6.4.0-150700.53.3.1
kernel-syms - addressed in versions 4.12.14-122.258.1, 6.4.0-150700.53.3.1
dlm-kmp-default-debuginfo - addressed in versions 4.12.14-122.258.1, 6.4.0-150700.53.3.1
kernel-default-debugsource - addressed in versions 4.12.14-122.258.1, 6.4.0-150700.53.3.1
kernel-default-devel-debuginfo - addressed in versions 4.12.14-122.258.1, 6.4.0-150700.53.3.1
kernel-default-base - addressed in versions 4.12.14-122.258.1, 6.4.0-150700.53.3.1.150700.17.2.1
ocfs2-kmp-default - addressed in versions 4.12.14-122.258.1, 6.4.0-150700.53.3.1
kernel-default-debuginfo - addressed in versions 4.12.14-122.258.1, 6.4.0-150700.53.3.1
ocfs2-kmp-default-debuginfo - addressed in versions 4.12.14-122.258.1, 6.4.0-150700.53.3.1
gfs2-kmp-default-debuginfo - addressed in versions 4.12.14-122.258.1, 6.4.0-150700.53.3.1
kernel-default-devel - addressed in versions 4.12.14-122.258.1, 6.4.0-150700.53.3.1
kernel-coco_debug - update to 6.4.0-15061.21.coco15sp6.1
kernel-coco - update to 6.4.0-15061.21.coco15sp6.1
kernel-syms-coco - update to 6.4.0-15061.21.coco15sp6.1
kernel-coco-devel - update to 6.4.0-15061.21.coco15sp6.1
kernel-coco_debug-devel - update to 6.4.0-15061.21.coco15sp6.1
kernel-coco-debugsource - update to 6.4.0-15061.21.coco15sp6.1
reiserfs-kmp-coco - update to 6.4.0-15061.21.coco15sp6.1
kernel-coco_debug-debugsource - update to 6.4.0-15061.21.coco15sp6.1
kernel-coco_debug-devel-debuginfo - update to 6.4.0-15061.21.coco15sp6.1
kernel-coco-debuginfo - update to 6.4.0-15061.21.coco15sp6.1
kernel-coco-vdso-debuginfo - update to 6.4.0-15061.21.coco15sp6.1
reiserfs-kmp-coco-debuginfo - update to 6.4.0-15061.21.coco15sp6.1
kernel-devel-coco - update to 6.4.0-15061.21.coco15sp6.1
kernel-source-coco - update to 6.4.0-15061.21.coco15sp6.1
kernel-coco_debug-debuginfo - update to 6.4.0-15061.21.coco15sp6.1
gfs2-kmp-azure-debuginfo - update to 6.4.0-150600.8.37.1
kernel-azure-optional - update to 6.4.0-150600.8.37.1
kernel-azure-debugsource - addressed in versions 6.4.0-150600.8.37.1, 6.4.0-150700.20.3.1
kernel-azure-devel - addressed in versions 6.4.0-150600.8.37.1, 6.4.0-150700.20.3.1
cluster-md-kmp-azure-debuginfo - update to 6.4.0-150600.8.37.1
reiserfs-kmp-azure-debuginfo - update to 6.4.0-150600.8.37.1
kernel-azure-extra - update to 6.4.0-150600.8.37.1
kernel-azure-optional-debuginfo - update to 6.4.0-150600.8.37.1
ocfs2-kmp-azure - update to 6.4.0-150600.8.37.1
cluster-md-kmp-azure - update to 6.4.0-150600.8.37.1
dlm-kmp-azure - update to 6.4.0-150600.8.37.1
kernel-azure-extra-debuginfo - update to 6.4.0-150600.8.37.1
kselftests-kmp-azure-debuginfo - update to 6.4.0-150600.8.37.1
ocfs2-kmp-azure-debuginfo - update to 6.4.0-150600.8.37.1
kernel-source-azure - addressed in versions 6.4.0-150600.8.37.1, 6.4.0-150700.20.3.1
kernel-azure-vdso - update to 6.4.0-150600.8.37.1
kernel-azure-vdso-debuginfo - update to 6.4.0-150600.8.37.1
kernel-devel-azure - addressed in versions 6.4.0-150600.8.37.1, 6.4.0-150700.20.3.1
kernel-azure - addressed in versions 6.4.0-150600.8.37.1, 6.4.0-150700.20.3.1
dlm-kmp-azure-debuginfo - update to 6.4.0-150600.8.37.1
kernel-azure-debuginfo - addressed in versions 6.4.0-150600.8.37.1, 6.4.0-150700.20.3.1
kernel-azure-devel-debuginfo - addressed in versions 6.4.0-150600.8.37.1, 6.4.0-150700.20.3.1
gfs2-kmp-azure - update to 6.4.0-150600.8.37.1
kernel-syms-azure - addressed in versions 6.4.0-150600.8.37.1, 6.4.0-150700.20.3.1
reiserfs-kmp-azure - update to 6.4.0-150600.8.37.1
kselftests-kmp-azure - update to 6.4.0-150600.8.37.1
kernel-rt-optional - update to 6.4.0-150600.10.39.1
ocfs2-kmp-rt - addressed in versions 6.4.0-150600.10.39.1, 6.4.0-150700.7.3.1
kernel-rt-devel - addressed in versions 6.4.0-150600.10.39.1, 6.4.0-150700.7.3.1
dlm-kmp-rt - addressed in versions 6.4.0-150600.10.39.1, 6.4.0-150700.7.3.1
kernel-rt-debuginfo - addressed in versions 6.4.0-150600.10.39.1, 6.4.0-150700.7.3.1
kernel-rt_debug-devel-debuginfo - addressed in versions 6.4.0-150600.10.39.1, 6.4.0-150700.7.3.1
kernel-rt_debug-vdso - update to 6.4.0-150600.10.39.1
kernel-rt_debug-debuginfo - addressed in versions 6.4.0-150600.10.39.1, 6.4.0-150700.7.3.1
kernel-syms-rt - addressed in versions 6.4.0-150600.10.39.1, 6.4.0-150700.7.3.1
kernel-rt-extra-debuginfo - update to 6.4.0-150600.10.39.1
reiserfs-kmp-rt-debuginfo - update to 6.4.0-150600.10.39.1
kernel-rt-livepatch-devel - update to 6.4.0-150600.10.39.1
kselftests-kmp-rt-debuginfo - update to 6.4.0-150600.10.39.1
ocfs2-kmp-rt-debuginfo - addressed in versions 6.4.0-150600.10.39.1, 6.4.0-150700.7.3.1
gfs2-kmp-rt-debuginfo - addressed in versions 6.4.0-150600.10.39.1, 6.4.0-150700.7.3.1
cluster-md-kmp-rt-debuginfo - addressed in versions 6.4.0-150600.10.39.1, 6.4.0-150700.7.3.1
kernel-rt_debug-vdso-debuginfo - update to 6.4.0-150600.10.39.1
gfs2-kmp-rt - addressed in versions 6.4.0-150600.10.39.1, 6.4.0-150700.7.3.1
reiserfs-kmp-rt - update to 6.4.0-150600.10.39.1
kernel-rt-devel-debuginfo - addressed in versions 6.4.0-150600.10.39.1, 6.4.0-150700.7.3.1
kernel-rt_debug-debugsource - addressed in versions 6.4.0-150600.10.39.1, 6.4.0-150700.7.3.1
kernel-rt-optional-debuginfo - update to 6.4.0-150600.10.39.1
kernel-rt-vdso-debuginfo - update to 6.4.0-150600.10.39.1
dlm-kmp-rt-debuginfo - addressed in versions 6.4.0-150600.10.39.1, 6.4.0-150700.7.3.1
cluster-md-kmp-rt - addressed in versions 6.4.0-150600.10.39.1, 6.4.0-150700.7.3.1
kernel-rt-debugsource - addressed in versions 6.4.0-150600.10.39.1, 6.4.0-150700.7.3.1
kernel-rt-extra - update to 6.4.0-150600.10.39.1
kernel-rt-vdso - update to 6.4.0-150600.10.39.1
kernel-rt_debug-devel - addressed in versions 6.4.0-150600.10.39.1, 6.4.0-150700.7.3.1
kselftests-kmp-rt - update to 6.4.0-150600.10.39.1
kernel-source-rt - addressed in versions 6.4.0-150600.10.39.1, 6.4.0-150700.7.3.1
kernel-rt - addressed in versions 6.4.0-150600.10.39.1, 6.4.0-150700.7.3.1
kernel-rt_debug - addressed in versions 6.4.0-150600.10.39.1, 6.4.0-150700.7.3.1
kernel-devel-rt - addressed in versions 6.4.0-150600.10.39.1, 6.4.0-150700.7.3.1
kernel-default-livepatch-devel - update to 6.4.0-150700.53.3.1
kernel-default-livepatch - update to 6.4.0-150700.53.3.1
kernel-default-extra-debuginfo - update to 6.4.0-150700.53.3.1
kernel-default-extra - update to 6.4.0-150700.53.3.1
kernel-obs-build - update to 6.4.0-150700.53.3.1
reiserfs-kmp-default-debuginfo - update to 6.4.0-150700.53.3.1
reiserfs-kmp-default - update to 6.4.0-150700.53.3.1
kernel-64kb-devel - update to 6.4.0-150700.53.3.1
kernel-64kb - update to 6.4.0-150700.53.3.1
kernel-obs-build-debugsource - update to 6.4.0-150700.53.3.1
kernel-docs - update to 6.4.0-150700.53.3.1
kernel-zfcpdump-debugsource - update to 6.4.0-150700.53.3.1
kernel-zfcpdump-debuginfo - update to 6.4.0-150700.53.3.1
kernel-zfcpdump - update to 6.4.0-150700.53.3.1
kernel-64kb-devel-debuginfo - update to 6.4.0-150700.53.3.1
kernel-64kb-debuginfo - update to 6.4.0-150700.53.3.1
kernel-64kb-debugsource - update to 6.4.0-150700.53.3.1
python3-perf-debuginfo - addressed in versions 6.6.0-96.0.0.89, 6.6.0-96.0.0.100
python3-perf - addressed in versions 6.6.0-96.0.0.89, 6.6.0-96.0.0.100
perf-debuginfo - addressed in versions 6.6.0-96.0.0.89, 6.6.0-96.0.0.100
perf - addressed in versions 6.6.0-96.0.0.89, 6.6.0-96.0.0.100
kernel-tools-devel - addressed in versions 6.6.0-96.0.0.89, 6.6.0-96.0.0.100
kernel-tools-debuginfo - addressed in versions 6.6.0-96.0.0.89, 6.6.0-96.0.0.100
kernel-tools - addressed in versions 6.6.0-96.0.0.89, 6.6.0-96.0.0.100
kernel-source - addressed in versions 6.6.0-96.0.0.89, 6.6.0-96.0.0.100
kernel-headers - addressed in versions 6.6.0-96.0.0.89, 6.6.0-96.0.0.100
kernel-devel - addressed in versions 6.6.0-96.0.0.89, 6.6.0-96.0.0.100
kernel-debugsource - addressed in versions 6.6.0-96.0.0.89, 6.6.0-96.0.0.100
kernel-debuginfo - addressed in versions 6.6.0-96.0.0.89, 6.6.0-96.0.0.100
bpftool-debuginfo - addressed in versions 6.6.0-96.0.0.89, 6.6.0-96.0.0.100
bpftool - addressed in versions 6.6.0-96.0.0.89, 6.6.0-96.0.0.100
kernel - addressed in versions 6.6.0-96.0.0.89, 6.6.0-96.0.0.100
python3-perf - update to 6.6.102-6
perf - update to 6.6.102-6
kernel-tools-libs-devel - update to 6.6.102-6
kernel-tools-libs - update to 6.6.102-6
kernel-tools - update to 6.6.102-6
kernel-headers - update to 6.6.102-6
kernel-devel - update to 6.6.102-6
kernel-debug-devel - update to 6.6.102-6
kernel-debug - update to 6.6.102-6
kernel - update to 6.6.102-6
bpftool - update to 6.6.102-6
linux (Debian package) - update to 6.12.95-1
linux (Ubuntu package) - addressed in versions 6.14.0-22.22, 6.14.0-1004.4, 6.14.0-1007.7, 6.14.0-1008.8
linux-aws (Ubuntu package) - addressed in versions 6.14.0-1007.7, 6.14.0-1007.7+1
linux-azure (Ubuntu package) - update to 6.14.0-1007.7

External References

Related Security Bulletins