Improper locking in Linux kernel - CVE-2025-68264

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Main Vulnerability Database Vulnerabilities #VU120077

Improper locking in Linux kernel - CVE-2025-68264

Published: December 16, 2025


Vulnerability identifier: #VU120077
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-2025-68264
CWE-ID: CWE-667
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 improper locking within the ext4_prepare_inline_data() function in fs/ext4/inline.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
Debian Linux
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Workstation Extension 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Live Patching
Legacy Module
Development Tools Module
Basesystem Module
Public Cloud Module
SUSE Real Time Module
Ubuntu
openEuler
kgraft-patch-4_12_14-122_293-default
kernel-livepatch-6_4_0-150700_7_28-rt
kernel-livepatch-SLE15-SP7-RT_Update_8-debugsource
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-base-debuginfo
cluster-md-kmp-default
kernel-default-devel-debuginfo
kernel-default-man
kernel-default
kernel-default-kgraft-devel
kernel-default-debugsource
kernel-default-debuginfo
kernel-default-kgraft
kernel-macros
cluster-md-kmp-default-debuginfo
kernel-devel
gfs2-kmp-default
dlm-kmp-default-debuginfo
dlm-kmp-default
kernel-default-base
ocfs2-kmp-default-debuginfo
ocfs2-kmp-default
kernel-default-devel
kernel-syms
gfs2-kmp-default-debuginfo
kernel-source
linux-aws-fips (Ubuntu package)
linux (Ubuntu package)
linux-aws-5.15 (Ubuntu package)
linux-nvidia-tegra-igx (Ubuntu package)
linux-intel-iot-realtime (Ubuntu package)
linux-raspi (Ubuntu package)
linux-realtime (Ubuntu package)
linux-azure-fips (Ubuntu package)
linux-azure (Ubuntu package)
linux-azure-5.15 (Ubuntu package)
linux (Debian package)
kernel-rt
cluster-md-kmp-rt-debuginfo
dlm-kmp-rt
kernel-source-rt
kernel-devel-rt
kernel-syms-rt
ocfs2-kmp-rt
kernel-rt-debuginfo
ocfs2-kmp-rt-debuginfo
dlm-kmp-rt-debuginfo
cluster-md-kmp-rt
kernel-rt-devel-debuginfo
gfs2-kmp-rt
gfs2-kmp-rt-debuginfo
kernel-rt-debugsource
kernel-rt-devel
kernel-azure-debuginfo
kernel-source-azure
kernel-devel-azure
kernel-azure-debugsource
kernel-azure-devel
kernel-azure-devel-debuginfo
kernel-syms-azure
kernel-azure
kernel-docs
kernel-zfcpdump-debuginfo
kernel-zfcpdump
kernel-zfcpdump-debugsource
reiserfs-kmp-default-debuginfo
kernel-64kb-devel
kernel-64kb-devel-debuginfo
kernel-64kb-debugsource
kernel-64kb-debuginfo
kernel-64kb
kernel-default-livepatch-devel
kernel-default-livepatch
kernel-obs-build
kernel-obs-build-debugsource
reiserfs-kmp-default
kernel-default-extra-debuginfo
kernel-default-extra
bpftool-debuginfo
kernel
python3-perf-debuginfo
python3-perf
perf-debuginfo
perf
kernel-tools-devel
kernel-tools-debuginfo
kernel-tools
kernel-headers
kernel-debugsource
kernel-debuginfo
bpftool
kernel-extra-modules
linux-hwe-6.8 (Ubuntu package)
linux-nvidia-tegra (Ubuntu package)
linux-xilinx (Ubuntu package)
linux-oracle (Ubuntu package)
linux-nvidia (Ubuntu package)
linux-nvidia-lowlatency (Ubuntu package)
linux-gcp-6.8 (Ubuntu package)
linux-raspi-realtime (Ubuntu package)
linux-gcp-6.17 (Ubuntu package)
linux-realtime-6.17 (Ubuntu package)
linux-oem-6.17 (Ubuntu package)

How to mitigate CVE-2025-68264

Install update from vendor's repository.

kgraft-patch-4_12_14-122_293-default - update to 1-8.3.1
kernel-livepatch-6_4_0-150700_7_28-rt - update to 1-150700.1.3.1
kernel-livepatch-SLE15-SP7-RT_Update_8-debugsource - update to 1-150700.1.3.1
kernel-livepatch-6_4_0-150700_7_28-rt-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-base-debuginfo - update to 4.12.14-122.293.1
cluster-md-kmp-default - addressed in versions 4.12.14-122.293.1, 6.4.0-150700.53.28.1
kernel-default-devel-debuginfo - addressed in versions 4.12.14-122.293.1, 6.4.0-150700.53.28.1
kernel-default-man - update to 4.12.14-122.293.1
kernel-default - addressed in versions 4.12.14-122.293.1, 6.4.0-150700.53.28.1
kernel-default-kgraft-devel - update to 4.12.14-122.293.1
kernel-default-debugsource - addressed in versions 4.12.14-122.293.1, 6.4.0-150700.53.28.1
kernel-default-debuginfo - addressed in versions 4.12.14-122.293.1, 6.4.0-150700.53.28.1
kernel-default-kgraft - update to 4.12.14-122.293.1
kernel-macros - addressed in versions 4.12.14-122.293.1, 6.4.0-150700.53.28.1
cluster-md-kmp-default-debuginfo - addressed in versions 4.12.14-122.293.1, 6.4.0-150700.53.28.1
kernel-devel - addressed in versions 4.12.14-122.293.1, 6.4.0-150700.53.28.1
gfs2-kmp-default - addressed in versions 4.12.14-122.293.1, 6.4.0-150700.53.28.1
dlm-kmp-default-debuginfo - addressed in versions 4.12.14-122.293.1, 6.4.0-150700.53.28.1
dlm-kmp-default - addressed in versions 4.12.14-122.293.1, 6.4.0-150700.53.28.1
kernel-default-base - addressed in versions 4.12.14-122.293.1, 6.4.0-150700.53.28.1.150700.17.19.1
ocfs2-kmp-default-debuginfo - addressed in versions 4.12.14-122.293.1, 6.4.0-150700.53.28.1
ocfs2-kmp-default - addressed in versions 4.12.14-122.293.1, 6.4.0-150700.53.28.1
kernel-default-devel - addressed in versions 4.12.14-122.293.1, 6.4.0-150700.53.28.1
kernel-syms - addressed in versions 4.12.14-122.293.1, 6.4.0-150700.53.28.1
gfs2-kmp-default-debuginfo - addressed in versions 4.12.14-122.293.1, 6.4.0-150700.53.28.1
kernel-source - addressed in versions 4.12.14-122.293.1, 6.4.0-150700.53.28.1
linux-aws-fips (Ubuntu package) - addressed in versions 5.15.0.173.100, 5.15.0-173.183+fips1, 5.15.0.1103.93, 5.15.0.1103.99, 5.15.0-1103.110+fips1, 5.15.0-1103.112+fips1, 6.8.0-110.110+fips2, 6.8.0-1052.55+fips1, 6.8.0-1054.57+fips1
linux (Ubuntu package) - addressed in versions 5.15.0.173.146, 5.15.0.173.161, 5.15.0-173.183, 5.15.0-1055.55, 5.15.0-1055.55~20.04.1, 5.15.0.1067.70, 5.15.0-1067.71, 5.15.0.1086.85, 5.15.0-1086.94, 5.15.0.1095.91, 5.15.0-1095.100, 5.15.0.1097.93, 5.15.0.1097.100, 5.15.0-1097.100~20.04.1, 5.15.0.1098.98, 5.15.0-1098.99, 5.15.0-1098.104, 5.15.0.1100.96, 5.15.0-1100.106, 5.15.0.1103.99, 5.15.0.1103.106, 5.15.0-1103.110, 5.15.0-1103.112~20.04.1, 6.8.0-110.110, 6.8.0-110.110.1, 6.8.0-110.110.1~22.04.1, 6.8.0-1037.40, 6.8.0-1050.56, 6.8.0-1051.51, 6.8.0-1052.55~22.04.1, 6.8.0-1054.57, 6.17.0-19.19, 6.17.0-19.19~24.04.2, 6.17.0-1009.9, 6.17.0-1009.9~24.04.1, 6.17.0-1009.9~24.04.2
linux-aws-5.15 (Ubuntu package) - addressed in versions 5.15.0-173.183~20.04.1, 5.15.0-1098.104~20.04.1, 5.15.0.1099.98, 5.15.0-1099.105, 5.15.0-1100.106~20.04.1, 5.15.0-1103.110~20.04.1, 5.15.0-1103.112~20.04.1
linux-nvidia-tegra-igx (Ubuntu package) - addressed in versions 5.15.0-1044.44, 5.15.0.1044.46
linux-intel-iot-realtime (Ubuntu package) - addressed in versions 5.15.0-1094.96, 5.15.0.1094.98
linux-raspi (Ubuntu package) - addressed in versions 5.15.0.1097.95, 5.15.0-1097.100, 6.17.0-1010.10
linux-realtime (Ubuntu package) - addressed in versions 5.15.0.1102.106, 5.15.0-1102.111, 6.8.1-1047.48
linux-azure-fips (Ubuntu package) - addressed in versions 5.15.0.1109.94, 5.15.0-1109.118+fips1, 6.8.0-1054.60+fips1
linux-azure (Ubuntu package) - addressed in versions 5.15.0.1109.107, 5.15.0-1109.118, 6.8.0-1054.60, 6.17.0-1010.10, 6.17.0-1010.10~24.04.1
linux-azure-5.15 (Ubuntu package) - update to 5.15.0-1110.119~20.04.1
linux (Debian package) - update to 6.1.162-1
kernel-rt - update to 6.4.0-150700.7.28.1
cluster-md-kmp-rt-debuginfo - update to 6.4.0-150700.7.28.1
dlm-kmp-rt - update to 6.4.0-150700.7.28.1
kernel-source-rt - update to 6.4.0-150700.7.28.1
kernel-devel-rt - 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-debuginfo - update to 6.4.0-150700.7.28.1
ocfs2-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
cluster-md-kmp-rt - update to 6.4.0-150700.7.28.1
kernel-rt-devel-debuginfo - update to 6.4.0-150700.7.28.1
gfs2-kmp-rt - update to 6.4.0-150700.7.28.1
gfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.28.1
kernel-rt-debugsource - update to 6.4.0-150700.7.28.1
kernel-rt-devel - update to 6.4.0-150700.7.28.1
kernel-azure-debuginfo - update to 6.4.0-150700.20.24.1
kernel-source-azure - update to 6.4.0-150700.20.24.1
kernel-devel-azure - 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-devel-debuginfo - update to 6.4.0-150700.20.24.1
kernel-syms-azure - update to 6.4.0-150700.20.24.1
kernel-azure - update to 6.4.0-150700.20.24.1
kernel-docs - update to 6.4.0-150700.53.28.1
kernel-zfcpdump-debuginfo - update to 6.4.0-150700.53.28.1
kernel-zfcpdump - update to 6.4.0-150700.53.28.1
kernel-zfcpdump-debugsource - update to 6.4.0-150700.53.28.1
reiserfs-kmp-default-debuginfo - update to 6.4.0-150700.53.28.1
kernel-64kb-devel - update to 6.4.0-150700.53.28.1
kernel-64kb-devel-debuginfo - update to 6.4.0-150700.53.28.1
kernel-64kb-debugsource - update to 6.4.0-150700.53.28.1
kernel-64kb-debuginfo - update to 6.4.0-150700.53.28.1
kernel-64kb - update to 6.4.0-150700.53.28.1
kernel-default-livepatch-devel - update to 6.4.0-150700.53.28.1
kernel-default-livepatch - update to 6.4.0-150700.53.28.1
kernel-obs-build - update to 6.4.0-150700.53.28.1
kernel-obs-build-debugsource - update to 6.4.0-150700.53.28.1
reiserfs-kmp-default - update to 6.4.0-150700.53.28.1
kernel-default-extra-debuginfo - update to 6.4.0-150700.53.28.1
kernel-default-extra - update to 6.4.0-150700.53.28.1
bpftool-debuginfo - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
kernel - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
python3-perf-debuginfo - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
python3-perf - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
perf-debuginfo - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
perf - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
kernel-tools-devel - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
kernel-tools-debuginfo - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
kernel-tools - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
kernel-source - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
kernel-headers - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
kernel-devel - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
kernel-debugsource - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
kernel-debuginfo - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
bpftool - addressed in versions 6.6.0-144.0.0.127, 6.6.0-144.0.0.139, 6.6.0-144.0.0.140
kernel-extra-modules - update to 6.6.0-144.0.0.140
linux-hwe-6.8 (Ubuntu package) - addressed in versions 6.8.0-110.110~22.04.1, 6.8.0-1051.51~22.04.1, 6.8.0-1052.56
linux-nvidia-tegra (Ubuntu package) - update to 6.8.0-1022.22
linux-xilinx (Ubuntu package) - update to 6.8.0-1029.30
linux-oracle (Ubuntu package) - addressed in versions 6.8.0-1049.50, 6.8.0-1049.50~22.04.1
linux-nvidia (Ubuntu package) - addressed in versions 6.8.0-1051.54, 6.8.0-1051.54~22.04.1
linux-nvidia-lowlatency (Ubuntu package) - update to 6.8.0-1051.54.1
linux-gcp-6.8 (Ubuntu package) - update to 6.8.0-1054.57~22.04.1
linux-raspi-realtime (Ubuntu package) - update to 6.8.0-2042.43
linux-gcp-6.17 (Ubuntu package) - addressed in versions 6.17.0-1008.9, 6.17.0-1009.9~24.04.3
linux-realtime-6.17 (Ubuntu package) - update to 6.17.0-1008.9~24.04.1
linux-oem-6.17 (Ubuntu package) - update to 6.17.0-1017.17

External References

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