NULL pointer dereference in Linux kernel - CVE-2025-40123

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Main Vulnerability Database Vulnerabilities #VU118412

NULL pointer dereference in Linux kernel - CVE-2025-40123

Published: November 12, 2025


Vulnerability identifier: #VU118412
CSH Severity: Low
CVSS v4: 6.8 [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]
CVE-ID: CVE-2025-40123
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 __bpf_prog_map_compatible() function in kernel/bpf/core.c. A local user can perform a denial of service (DoS) attack.


Affected software

Linux kernel
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Workstation Extension 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Live Patching
Basesystem Module
Development Tools Module
Legacy Module
Public Cloud Module
SUSE Real Time Module
openEuler
Ubuntu
kgraft-patch-4_12_14-122_290-default
kernel-livepatch-SLE15-SP7-RT_Update_8-debugsource
kernel-livepatch-6_4_0-150700_7_28-rt
kernel-livepatch-6_4_0-150700_7_28-rt-debuginfo
kernel-livepatch-6_4_0-150700_53_28-default
kernel-livepatch-SLE15-SP7_Update_8-debugsource
kernel-livepatch-6_4_0-150700_53_28-default-debuginfo
kernel-default-kgraft-devel
kernel-default-base-debuginfo
kernel-default-kgraft
kernel-default-devel-debuginfo
kernel-default-man
kernel-source
kernel-devel
kernel-macros
kernel-default
ocfs2-kmp-default
cluster-md-kmp-default
dlm-kmp-default
gfs2-kmp-default-debuginfo
kernel-default-debuginfo
kernel-syms
kernel-default-debugsource
gfs2-kmp-default
ocfs2-kmp-default-debuginfo
cluster-md-kmp-default-debuginfo
kernel-default-devel
dlm-kmp-default-debuginfo
kernel-default-base
kernel-tools-devel
kernel
kernel-debuginfo
kernel-debugsource
kernel-headers
kernel-tools
python3-perf-debuginfo
python3-perf
perf-debuginfo
perf
kernel-tools-debuginfo
bpftool
bpftool-debuginfo
kernel-rt-devel
gfs2-kmp-rt
cluster-md-kmp-rt
gfs2-kmp-rt-debuginfo
dlm-kmp-rt-debuginfo
ocfs2-kmp-rt-debuginfo
kernel-rt-debuginfo
cluster-md-kmp-rt-debuginfo
kernel-syms-rt
ocfs2-kmp-rt
kernel-rt-debugsource
kernel-rt-devel-debuginfo
dlm-kmp-rt
kernel-devel-rt
kernel-source-rt
kernel-rt
kernel-azure
kernel-syms-azure
kernel-azure-devel-debuginfo
kernel-azure-debugsource
kernel-azure-devel
kernel-azure-debuginfo
kernel-devel-azure
kernel-source-azure
kernel-64kb-devel
kernel-obs-build
kernel-default-livepatch
kernel-obs-build-debugsource
kernel-default-livepatch-devel
kernel-64kb
kernel-64kb-debuginfo
kernel-64kb-debugsource
kernel-64kb-devel-debuginfo
kernel-zfcpdump
kernel-zfcpdump-debuginfo
kernel-zfcpdump-debugsource
kernel-docs
kernel-default-extra
kernel-default-extra-debuginfo
reiserfs-kmp-default
reiserfs-kmp-default-debuginfo
kernel-extra-modules
linux (Ubuntu package)
linux-aws-fips (Ubuntu package)
linux-xilinx (Ubuntu package)
linux-nvidia (Ubuntu package)
linux-aws-6.8 (Ubuntu package)
linux-raspi (Ubuntu package)
linux-azure (Ubuntu package)
linux-azure-6.8 (Ubuntu package)
linux-azure-fips (Ubuntu package)
linux-realtime (Ubuntu package)
linux-aws (Ubuntu package)
linux-gcp (Ubuntu package)
linux-oem-6.17 (Ubuntu package)

How to mitigate CVE-2025-40123

Install update from vendor's repository.

kgraft-patch-4_12_14-122_290-default - update to 1-8.7.1
kernel-livepatch-SLE15-SP7-RT_Update_8-debugsource - update to 1-150700.1.3.1
kernel-livepatch-6_4_0-150700_7_28-rt - update to 1-150700.1.3.1
kernel-livepatch-6_4_0-150700_7_28-rt-debuginfo - update to 1-150700.1.3.1
kernel-livepatch-6_4_0-150700_53_28-default - update to 1-150700.15.3.1
kernel-livepatch-SLE15-SP7_Update_8-debugsource - update to 1-150700.15.3.1
kernel-livepatch-6_4_0-150700_53_28-default-debuginfo - update to 1-150700.15.3.1
kernel-default-kgraft-devel - update to 4.12.14-122.290.1
kernel-default-base-debuginfo - update to 4.12.14-122.290.1
kernel-default-kgraft - update to 4.12.14-122.290.1
kernel-default-devel-debuginfo - addressed in versions 4.12.14-122.290.1, 6.4.0-150700.53.28.1
kernel-default-man - update to 4.12.14-122.290.1
kernel-source - addressed in versions 4.12.14-122.290.1, 6.4.0-150700.53.28.1
kernel-devel - addressed in versions 4.12.14-122.290.1, 6.4.0-150700.53.28.1
kernel-macros - addressed in versions 4.12.14-122.290.1, 6.4.0-150700.53.28.1
kernel-default - addressed in versions 4.12.14-122.290.1, 6.4.0-150700.53.28.1
ocfs2-kmp-default - addressed in versions 4.12.14-122.290.1, 6.4.0-150700.53.28.1
cluster-md-kmp-default - addressed in versions 4.12.14-122.290.1, 6.4.0-150700.53.28.1
dlm-kmp-default - addressed in versions 4.12.14-122.290.1, 6.4.0-150700.53.28.1
gfs2-kmp-default-debuginfo - addressed in versions 4.12.14-122.290.1, 6.4.0-150700.53.28.1
kernel-default-debuginfo - addressed in versions 4.12.14-122.290.1, 6.4.0-150700.53.28.1
kernel-syms - addressed in versions 4.12.14-122.290.1, 6.4.0-150700.53.28.1
kernel-default-debugsource - addressed in versions 4.12.14-122.290.1, 6.4.0-150700.53.28.1
gfs2-kmp-default - addressed in versions 4.12.14-122.290.1, 6.4.0-150700.53.28.1
ocfs2-kmp-default-debuginfo - addressed in versions 4.12.14-122.290.1, 6.4.0-150700.53.28.1
cluster-md-kmp-default-debuginfo - addressed in versions 4.12.14-122.290.1, 6.4.0-150700.53.28.1
kernel-default-devel - addressed in versions 4.12.14-122.290.1, 6.4.0-150700.53.28.1
dlm-kmp-default-debuginfo - addressed in versions 4.12.14-122.290.1, 6.4.0-150700.53.28.1
kernel-default-base - addressed in versions 4.12.14-122.290.1, 6.4.0-150700.53.28.1.150700.17.19.1
kernel-tools-devel - addressed in versions 5.10.0-291.0.0.193, 5.10.0-291.0.0.194, 6.6.0-121.0.0.111, 6.6.0-121.0.0.123, 6.6.0-121.0.0.124
kernel - addressed in versions 5.10.0-291.0.0.193, 5.10.0-291.0.0.194, 6.6.0-121.0.0.111, 6.6.0-121.0.0.123, 6.6.0-121.0.0.124
kernel-debuginfo - addressed in versions 5.10.0-291.0.0.193, 5.10.0-291.0.0.194, 6.6.0-121.0.0.111, 6.6.0-121.0.0.123, 6.6.0-121.0.0.124
kernel-debugsource - addressed in versions 5.10.0-291.0.0.193, 5.10.0-291.0.0.194, 6.6.0-121.0.0.111, 6.6.0-121.0.0.123, 6.6.0-121.0.0.124
kernel-devel - addressed in versions 5.10.0-291.0.0.193, 5.10.0-291.0.0.194, 6.6.0-121.0.0.111, 6.6.0-121.0.0.123, 6.6.0-121.0.0.124
kernel-headers - addressed in versions 5.10.0-291.0.0.193, 5.10.0-291.0.0.194, 6.6.0-121.0.0.111, 6.6.0-121.0.0.123, 6.6.0-121.0.0.124
kernel-source - addressed in versions 5.10.0-291.0.0.193, 5.10.0-291.0.0.194, 6.6.0-121.0.0.111, 6.6.0-121.0.0.123, 6.6.0-121.0.0.124
kernel-tools - addressed in versions 5.10.0-291.0.0.193, 5.10.0-291.0.0.194, 6.6.0-121.0.0.111, 6.6.0-121.0.0.123, 6.6.0-121.0.0.124
python3-perf-debuginfo - addressed in versions 5.10.0-291.0.0.193, 5.10.0-291.0.0.194, 6.6.0-121.0.0.111, 6.6.0-121.0.0.123, 6.6.0-121.0.0.124
python3-perf - addressed in versions 5.10.0-291.0.0.193, 5.10.0-291.0.0.194, 6.6.0-121.0.0.111, 6.6.0-121.0.0.123, 6.6.0-121.0.0.124
perf-debuginfo - addressed in versions 5.10.0-291.0.0.193, 5.10.0-291.0.0.194, 6.6.0-121.0.0.111, 6.6.0-121.0.0.123, 6.6.0-121.0.0.124
perf - addressed in versions 5.10.0-291.0.0.193, 5.10.0-291.0.0.194, 6.6.0-121.0.0.111, 6.6.0-121.0.0.123, 6.6.0-121.0.0.124
kernel-tools-debuginfo - addressed in versions 5.10.0-291.0.0.193, 5.10.0-291.0.0.194, 6.6.0-121.0.0.111, 6.6.0-121.0.0.123, 6.6.0-121.0.0.124
bpftool - addressed in versions 5.10.0-291.0.0.194, 6.6.0-121.0.0.111, 6.6.0-121.0.0.123, 6.6.0-121.0.0.124
bpftool-debuginfo - addressed in versions 5.10.0-291.0.0.194, 6.6.0-121.0.0.111, 6.6.0-121.0.0.123, 6.6.0-121.0.0.124
kernel-rt-devel - update to 6.4.0-150700.7.28.1
gfs2-kmp-rt - update to 6.4.0-150700.7.28.1
cluster-md-kmp-rt - update to 6.4.0-150700.7.28.1
gfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.28.1
dlm-kmp-rt-debuginfo - update to 6.4.0-150700.7.28.1
ocfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.28.1
kernel-rt-debuginfo - update to 6.4.0-150700.7.28.1
cluster-md-kmp-rt-debuginfo - update to 6.4.0-150700.7.28.1
kernel-syms-rt - update to 6.4.0-150700.7.28.1
ocfs2-kmp-rt - update to 6.4.0-150700.7.28.1
kernel-rt-debugsource - update to 6.4.0-150700.7.28.1
kernel-rt-devel-debuginfo - update to 6.4.0-150700.7.28.1
dlm-kmp-rt - update to 6.4.0-150700.7.28.1
kernel-devel-rt - update to 6.4.0-150700.7.28.1
kernel-source-rt - update to 6.4.0-150700.7.28.1
kernel-rt - update to 6.4.0-150700.7.28.1
kernel-azure - update to 6.4.0-150700.20.24.1
kernel-syms-azure - update to 6.4.0-150700.20.24.1
kernel-azure-devel-debuginfo - update to 6.4.0-150700.20.24.1
kernel-azure-debugsource - update to 6.4.0-150700.20.24.1
kernel-azure-devel - update to 6.4.0-150700.20.24.1
kernel-azure-debuginfo - update to 6.4.0-150700.20.24.1
kernel-devel-azure - update to 6.4.0-150700.20.24.1
kernel-source-azure - update to 6.4.0-150700.20.24.1
kernel-64kb-devel - update to 6.4.0-150700.53.28.1
kernel-obs-build - update to 6.4.0-150700.53.28.1
kernel-default-livepatch - update to 6.4.0-150700.53.28.1
kernel-obs-build-debugsource - update to 6.4.0-150700.53.28.1
kernel-default-livepatch-devel - update to 6.4.0-150700.53.28.1
kernel-64kb - update to 6.4.0-150700.53.28.1
kernel-64kb-debuginfo - update to 6.4.0-150700.53.28.1
kernel-64kb-debugsource - update to 6.4.0-150700.53.28.1
kernel-64kb-devel-debuginfo - update to 6.4.0-150700.53.28.1
kernel-zfcpdump - update to 6.4.0-150700.53.28.1
kernel-zfcpdump-debuginfo - update to 6.4.0-150700.53.28.1
kernel-zfcpdump-debugsource - update to 6.4.0-150700.53.28.1
kernel-docs - update to 6.4.0-150700.53.28.1
kernel-default-extra - update to 6.4.0-150700.53.28.1
kernel-default-extra-debuginfo - update to 6.4.0-150700.53.28.1
reiserfs-kmp-default - update to 6.4.0-150700.53.28.1
reiserfs-kmp-default-debuginfo - update to 6.4.0-150700.53.28.1
kernel-extra-modules - update to 6.6.0-121.0.0.124
linux (Ubuntu package) - addressed in versions 6.8.0-106.106, 6.8.0-106.106.1, 6.8.0-106.106.1~22.04.1, 6.8.0-106.106~22.04.1, 6.8.0-1035.38, 6.8.0-1047.48, 6.8.0-1047.48~22.04.1, 6.8.0-1048.53, 6.8.0-1049.49, 6.8.0-1049.49~22.04.1, 6.8.0-1050.53, 6.8.0-1052.55, 6.8.0-1052.55~22.04.1, 6.17.0-14.14, 6.17.0-1006.7, 6.17.0-1008.8
linux-aws-fips (Ubuntu package) - addressed in versions 6.8.0-106.106+fips1, 6.8.0-1050.53+fips1, 6.8.0-1052.55+fips1
linux-xilinx (Ubuntu package) - update to 6.8.0-1029.30
linux-nvidia (Ubuntu package) - addressed in versions 6.8.0-1049.52, 6.8.0-1049.52.1, 6.8.0-1049.52~22.04.1
linux-aws-6.8 (Ubuntu package) - update to 6.8.0-1050.53~22.04.1
linux-raspi (Ubuntu package) - addressed in versions 6.8.0-1050.54, 6.8.0-2040.41
linux-azure (Ubuntu package) - addressed in versions 6.8.0-1051.57, 6.17.0-1008.8
linux-azure-6.8 (Ubuntu package) - update to 6.8.0-1051.57~22.04.1
linux-azure-fips (Ubuntu package) - update to 6.8.0-1052.58+fips1
linux-realtime (Ubuntu package) - addressed in versions 6.8.1-1045.46, 6.8.1-1045.46~22.04.1
linux-aws (Ubuntu package) - update to 6.17.0-1007.7
linux-gcp (Ubuntu package) - update to 6.17.0-1007.7
linux-oem-6.17 (Ubuntu package) - update to 6.17.0-1011.11

External References

Related Security Bulletins