Memory leak in Linux kernel - CVE-2025-68814

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU121360

Memory leak in Linux kernel - CVE-2025-68814

Published: January 14, 2026


Vulnerability identifier: #VU121360
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-2025-68814
CWE-ID: CWE-401
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 memory leak within the __io_openat_prep() function in io_uring/openclose.c. A local user can perform a denial of service (DoS) attack.


Affected software

Linux kernel
Debian Linux
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Workstation Extension 15
Development Tools Module
SUSE Real Time Module
SUSE Linux Enterprise Live Patching
Public Cloud Module
Legacy Module
Basesystem Module
Ubuntu
openEuler
kernel-livepatch-6_4_0-150700_7_31-rt-debuginfo
kernel-livepatch-6_4_0-150700_7_31-rt
kernel-livepatch-SLE15-SP7-RT_Update_9-debugsource
kernel-livepatch-SLE15-SP7_Update_9-debugsource
kernel-livepatch-6_4_0-150700_53_31-default-debuginfo
kernel-livepatch-6_4_0-150700_53_31-default
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-syms-rt
kernel-devel-rt
kernel-source-rt
ocfs2-kmp-rt-debuginfo
kernel-rt-debuginfo
kernel-rt-debugsource
cluster-md-kmp-rt-debuginfo
ocfs2-kmp-rt
gfs2-kmp-rt-debuginfo
kernel-rt
dlm-kmp-rt
kernel-rt-devel-debuginfo
cluster-md-kmp-rt
kernel-rt-devel
gfs2-kmp-rt
dlm-kmp-rt-debuginfo
kernel-syms-azure
kernel-azure
kernel-azure-debuginfo
kernel-azure-devel
kernel-azure-debugsource
kernel-devel-azure
kernel-source-azure
kernel-azure-devel-debuginfo
kernel-default-devel-debuginfo
kernel-docs
kernel-zfcpdump-debugsource
kernel-zfcpdump-debuginfo
kernel-zfcpdump
kernel-devel
kernel-macros
kernel-default-debuginfo
kernel-default-devel
kernel-default-debugsource
gfs2-kmp-default-debuginfo
kernel-default
kernel-64kb-devel
kernel-64kb-devel-debuginfo
kernel-64kb-debugsource
kernel-64kb-debuginfo
kernel-64kb
kernel-obs-build
kernel-default-livepatch-devel
kernel-default-livepatch
kernel-default-extra
kernel-default-extra-debuginfo
dlm-kmp-default-debuginfo
cluster-md-kmp-default
gfs2-kmp-default
ocfs2-kmp-default-debuginfo
cluster-md-kmp-default-debuginfo
dlm-kmp-default
ocfs2-kmp-default
reiserfs-kmp-default
reiserfs-kmp-default-debuginfo
kernel-source
kernel-syms
kernel-obs-build-debugsource
kernel-default-base
kernel-debuginfo
python3-perf
kernel
bpftool
bpftool-debuginfo
python3-perf-debuginfo
kernel-debugsource
kernel-headers
kernel-tools
kernel-tools-debuginfo
kernel-tools-devel
perf
perf-debuginfo
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-aws (Ubuntu package)
linux-realtime-6.17 (Ubuntu package)
linux-gcp (Ubuntu package)

How to mitigate CVE-2025-68814

Install update from vendor's repository.

kernel-livepatch-6_4_0-150700_7_31-rt-debuginfo - update to 1-150700.1.3.2
kernel-livepatch-6_4_0-150700_7_31-rt - update to 1-150700.1.3.2
kernel-livepatch-SLE15-SP7-RT_Update_9-debugsource - update to 1-150700.1.3.2
kernel-livepatch-SLE15-SP7_Update_9-debugsource - update to 1-150700.15.3.1
kernel-livepatch-6_4_0-150700_53_31-default-debuginfo - update to 1-150700.15.3.1
kernel-livepatch-6_4_0-150700_53_31-default - update to 1-150700.15.3.1
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, 6.17.0-22.22, 6.17.0-1010.11
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, 6.17.0-1014.14
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, 6.17.0-1013.13, 6.17.0-1013.13~24.04.1, 6.17.0-1020.20
linux-azure-5.15 (Ubuntu package) - update to 5.15.0-1110.119~20.04.1
linux (Debian package) - addressed in versions 6.1.162-1, 6.12.69-1
kernel-syms-rt - update to 6.4.0-150700.7.31.1
kernel-devel-rt - update to 6.4.0-150700.7.31.1
kernel-source-rt - update to 6.4.0-150700.7.31.1
ocfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.31.2
kernel-rt-debuginfo - update to 6.4.0-150700.7.31.2
kernel-rt-debugsource - update to 6.4.0-150700.7.31.2
cluster-md-kmp-rt-debuginfo - update to 6.4.0-150700.7.31.2
ocfs2-kmp-rt - update to 6.4.0-150700.7.31.2
gfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.31.2
kernel-rt - update to 6.4.0-150700.7.31.2
dlm-kmp-rt - update to 6.4.0-150700.7.31.2
kernel-rt-devel-debuginfo - update to 6.4.0-150700.7.31.2
cluster-md-kmp-rt - update to 6.4.0-150700.7.31.2
kernel-rt-devel - update to 6.4.0-150700.7.31.2
gfs2-kmp-rt - update to 6.4.0-150700.7.31.2
dlm-kmp-rt-debuginfo - update to 6.4.0-150700.7.31.2
kernel-syms-azure - update to 6.4.0-150700.20.27.1
kernel-azure - update to 6.4.0-150700.20.27.1
kernel-azure-debuginfo - update to 6.4.0-150700.20.27.1
kernel-azure-devel - update to 6.4.0-150700.20.27.1
kernel-azure-debugsource - update to 6.4.0-150700.20.27.1
kernel-devel-azure - update to 6.4.0-150700.20.27.1
kernel-source-azure - update to 6.4.0-150700.20.27.1
kernel-azure-devel-debuginfo - update to 6.4.0-150700.20.27.1
kernel-default-devel-debuginfo - update to 6.4.0-150700.53.31.1
kernel-docs - update to 6.4.0-150700.53.31.1
kernel-zfcpdump-debugsource - update to 6.4.0-150700.53.31.1
kernel-zfcpdump-debuginfo - update to 6.4.0-150700.53.31.1
kernel-zfcpdump - update to 6.4.0-150700.53.31.1
kernel-devel - update to 6.4.0-150700.53.31.1
kernel-macros - update to 6.4.0-150700.53.31.1
kernel-default-debuginfo - update to 6.4.0-150700.53.31.1
kernel-default-devel - update to 6.4.0-150700.53.31.1
kernel-default-debugsource - update to 6.4.0-150700.53.31.1
gfs2-kmp-default-debuginfo - update to 6.4.0-150700.53.31.1
kernel-default - update to 6.4.0-150700.53.31.1
kernel-64kb-devel - update to 6.4.0-150700.53.31.1
kernel-64kb-devel-debuginfo - update to 6.4.0-150700.53.31.1
kernel-64kb-debugsource - update to 6.4.0-150700.53.31.1
kernel-64kb-debuginfo - update to 6.4.0-150700.53.31.1
kernel-64kb - update to 6.4.0-150700.53.31.1
kernel-obs-build - update to 6.4.0-150700.53.31.1
kernel-default-livepatch-devel - update to 6.4.0-150700.53.31.1
kernel-default-livepatch - update to 6.4.0-150700.53.31.1
kernel-default-extra - update to 6.4.0-150700.53.31.1
kernel-default-extra-debuginfo - update to 6.4.0-150700.53.31.1
dlm-kmp-default-debuginfo - update to 6.4.0-150700.53.31.1
cluster-md-kmp-default - update to 6.4.0-150700.53.31.1
gfs2-kmp-default - update to 6.4.0-150700.53.31.1
ocfs2-kmp-default-debuginfo - update to 6.4.0-150700.53.31.1
cluster-md-kmp-default-debuginfo - update to 6.4.0-150700.53.31.1
dlm-kmp-default - update to 6.4.0-150700.53.31.1
ocfs2-kmp-default - update to 6.4.0-150700.53.31.1
reiserfs-kmp-default - update to 6.4.0-150700.53.31.1
reiserfs-kmp-default-debuginfo - update to 6.4.0-150700.53.31.1
kernel-source - update to 6.4.0-150700.53.31.1
kernel-syms - update to 6.4.0-150700.53.31.1
kernel-obs-build-debugsource - update to 6.4.0-150700.53.31.1
kernel-default-base - update to 6.4.0-150700.53.31.1.150700.17.21.1
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
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
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
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
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
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
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-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-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-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-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-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-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
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
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-aws (Ubuntu package) - addressed in versions 6.17.0-22.22~24.04.1, 6.17.0-1011.11, 6.17.0-1011.11~24.04.1, 6.17.0-1012.12, 6.17.0-1012.12~24.04.1
linux-realtime-6.17 (Ubuntu package) - update to 6.17.0-1010.11~24.04.1
linux-gcp (Ubuntu package) - addressed in versions 6.17.0-1012.12, 6.17.0-1012.12~24.04.1

External References

Related Security Bulletins