Memory leak in Linux kernel - CVE-2025-40278

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Main Vulnerability Database Vulnerabilities #VU119287

Memory leak in Linux kernel - CVE-2025-40278

Published: December 8, 2025


Vulnerability identifier: #VU119287
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-2025-40278
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 tcf_ife_dump() function in net/sched/act_ife.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 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
SUSE Real Time Module
Public Cloud Module
Basesystem Module
Development Tools Module
Ubuntu
kgraft-patch-4_12_14-122_290-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-macros
ocfs2-kmp-default
cluster-md-kmp-default
dlm-kmp-default
kernel-default-kgraft-devel
gfs2-kmp-default-debuginfo
kernel-default-kgraft
kernel-default-devel-debuginfo
kernel-default-man
kernel-source
kernel-devel
kernel-default-debuginfo
kernel-default
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-default-base-debuginfo
kernel-syms
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)
cluster-md-kmp-rt-debuginfo
gfs2-kmp-rt
cluster-md-kmp-rt
dlm-kmp-rt-debuginfo
ocfs2-kmp-rt-debuginfo
kernel-rt-debuginfo
kernel-rt-devel
ocfs2-kmp-rt
kernel-syms-rt
kernel-rt
kernel-source-rt
kernel-devel-rt
dlm-kmp-rt
kernel-rt-devel-debuginfo
kernel-rt-debugsource
gfs2-kmp-rt-debuginfo
kernel-azure-debuginfo
kernel-azure
kernel-syms-azure
kernel-azure-devel-debuginfo
kernel-source-azure
kernel-devel-azure
kernel-azure-debugsource
kernel-azure-devel
kernel-default-livepatch
kernel-default-extra
kernel-default-extra-debuginfo
kernel-default-livepatch-devel
kernel-64kb
kernel-64kb-debuginfo
kernel-64kb-debugsource
kernel-64kb-devel
reiserfs-kmp-default
reiserfs-kmp-default-debuginfo
kernel-obs-build
kernel-obs-build-debugsource
kernel-docs
kernel-zfcpdump-debugsource
kernel-zfcpdump-debuginfo
kernel-zfcpdump
kernel-64kb-devel-debuginfo
linux-xilinx (Ubuntu package)
linux-nvidia (Ubuntu package)
linux-aws-6.8 (Ubuntu package)
linux-azure-6.8 (Ubuntu package)
linux-aws (Ubuntu package)
linux-gcp (Ubuntu package)
linux-oem-6.17 (Ubuntu package)

How to mitigate CVE-2025-40278

Install update from vendor's repository.

kgraft-patch-4_12_14-122_290-default - update to 1-8.7.1
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-macros - 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
kernel-default-kgraft-devel - update to 4.12.14-122.290.1
gfs2-kmp-default-debuginfo - addressed in versions 4.12.14-122.290.1, 6.4.0-150700.53.28.1
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-default-debuginfo - 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
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-default-base-debuginfo - update to 4.12.14-122.290.1
kernel-syms - addressed in versions 4.12.14-122.290.1, 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, 6.8.0-106.106+fips1, 6.8.0-1050.53+fips1, 6.8.0-1052.55+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, 6.8.0-106.106, 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-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, 6.8.0-1050.54, 6.8.0-2040.41
linux-realtime (Ubuntu package) - addressed in versions 5.15.0.1102.106, 5.15.0-1102.111, 6.8.1-1045.46, 6.8.1-1045.46~22.04.1
linux-azure-fips (Ubuntu package) - addressed in versions 5.15.0.1109.94, 5.15.0-1109.118+fips1, 6.8.0-1052.58+fips1
linux-azure (Ubuntu package) - addressed in versions 5.15.0.1109.107, 5.15.0-1109.118, 6.8.0-1051.57, 6.17.0-1008.8
linux-azure-5.15 (Ubuntu package) - update to 5.15.0-1110.119~20.04.1
cluster-md-kmp-rt-debuginfo - 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
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
kernel-rt-devel - update to 6.4.0-150700.7.28.1
ocfs2-kmp-rt - update to 6.4.0-150700.7.28.1
kernel-syms-rt - update to 6.4.0-150700.7.28.1
kernel-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
dlm-kmp-rt - update to 6.4.0-150700.7.28.1
kernel-rt-devel-debuginfo - update to 6.4.0-150700.7.28.1
kernel-rt-debugsource - update to 6.4.0-150700.7.28.1
gfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.28.1
kernel-azure-debuginfo - update to 6.4.0-150700.20.24.1
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-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-default-livepatch - 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
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 - 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-obs-build - update to 6.4.0-150700.53.28.1
kernel-obs-build-debugsource - update to 6.4.0-150700.53.28.1
kernel-docs - update to 6.4.0-150700.53.28.1
kernel-zfcpdump-debugsource - 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-64kb-devel-debuginfo - update to 6.4.0-150700.53.28.1
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-azure-6.8 (Ubuntu package) - update to 6.8.0-1051.57~22.04.1
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