Memory leak in Linux kernel - CVE-2025-21981

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Main Vulnerability Database Vulnerabilities #VU106578

Memory leak in Linux kernel - CVE-2025-21981

Published: April 2, 2025 / Updated: May 11, 2025


Vulnerability identifier: #VU106578
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-2025-21981
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 ice_init_arfs() function in drivers/net/ethernet/intel/ice/ice_arfs.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 Server 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Workstation Extension 15
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Live Patching
Confidential Computing Module
Public Cloud Module
SUSE Real Time Module
Legacy Module
Development Tools Module
Basesystem Module
openSUSE Leap
Ubuntu
openEuler
kernel-livepatch-6_4_0-150600_10_39-rt
kernel-livepatch-SLE15-SP6-RT_Update_11-debugsource
kernel-livepatch-6_4_0-150600_10_39-rt-debuginfo
kernel-livepatch-6_4_0-150700_53_3-default
kernel-livepatch-6_4_0-150700_53_3-default-debuginfo
kernel-livepatch-SLE15-SP7_Update_1-debugsource
kernel-devel
kernel
bpftool
bpftool-debuginfo
kernel-debuginfo
kernel-debugsource
kernel-headers
kernel-source
kernel-tools
kernel-tools-debuginfo
kernel-tools-devel
perf
perf-debuginfo
python3-perf
python3-perf-debuginfo
linux-aws-fips (Ubuntu package)
linux (Ubuntu package)
linux-hwe-5.15 (Ubuntu package)
linux-aws-5.15 (Ubuntu package)
linux-xilinx-zynqmp (Ubuntu package)
linux-intel-iot-realtime (Ubuntu package)
linux-raspi (Ubuntu package)
linux-intel-iotg (Ubuntu package)
linux-intel-iotg-5.15 (Ubuntu package)
linux-aws (Ubuntu package)
linux-azure-fips (Ubuntu package)
linux-azure (Ubuntu package)
linux-azure-5.15 (Ubuntu package)
linux (Debian package)
kernel-coco-devel
kernel-coco_debug-devel
kernel-syms-coco
kernel-coco_debug-debuginfo
kernel-coco-debugsource
reiserfs-kmp-coco
kernel-coco
kernel-coco_debug-debugsource
kernel-coco_debug-devel-debuginfo
kernel-coco-debuginfo
kernel-coco_debug
kernel-coco-vdso-debuginfo
reiserfs-kmp-coco-debuginfo
kernel-devel-coco
kernel-source-coco
cluster-md-kmp-azure
reiserfs-kmp-azure
kernel-source-azure
kernel-devel-azure
kernel-azure-vdso
kernel-azure-vdso-debuginfo
kernel-azure
dlm-kmp-azure-debuginfo
kernel-azure-debuginfo
ocfs2-kmp-azure-debuginfo
gfs2-kmp-azure
kernel-syms-azure
ocfs2-kmp-azure
kernel-azure-optional-debuginfo
kernel-azure-devel
kselftests-kmp-azure
kernel-azure-devel-debuginfo
kselftests-kmp-azure-debuginfo
gfs2-kmp-azure-debuginfo
kernel-azure-extra-debuginfo
dlm-kmp-azure
kernel-azure-extra
reiserfs-kmp-azure-debuginfo
kernel-azure-optional
kernel-azure-debugsource
cluster-md-kmp-azure-debuginfo
kernel-rt-vdso
kernel-rt_debug-devel
cluster-md-kmp-rt-debuginfo
gfs2-kmp-rt-debuginfo
ocfs2-kmp-rt-debuginfo
kselftests-kmp-rt-debuginfo
kernel-rt-livepatch-devel
kernel-rt_debug-vdso-debuginfo
gfs2-kmp-rt
kernel-rt-devel-debuginfo
reiserfs-kmp-rt
cluster-md-kmp-rt
kernel-rt-debugsource
kernel-rt-extra
kernel-rt_debug
kernel-rt
kernel-source-rt
kernel-devel-rt
kernel-rt-devel
kernel-rt-extra-debuginfo
kernel-syms-rt
kernel-rt_debug-debuginfo
kernel-rt_debug-vdso
kernel-rt-debuginfo
reiserfs-kmp-rt-debuginfo
kernel-rt-optional-debuginfo
kernel-rt-vdso-debuginfo
dlm-kmp-rt-debuginfo
kselftests-kmp-rt
kernel-rt_debug-debugsource
dlm-kmp-rt
kernel-rt-optional
ocfs2-kmp-rt
kernel-rt_debug-devel-debuginfo
kernel-default
reiserfs-kmp-default
reiserfs-kmp-default-debuginfo
kernel-default-debugsource
kernel-default-debuginfo
kernel-docs
kernel-64kb-devel-debuginfo
kernel-default-devel-debuginfo
kernel-64kb-debuginfo
kernel-64kb-debugsource
kernel-64kb-devel
kernel-64kb
kernel-default-devel
kernel-default-livepatch-devel
kernel-default-livepatch
kernel-macros
kernel-zfcpdump
kernel-zfcpdump-debuginfo
kernel-zfcpdump-debugsource
kernel-obs-build-debugsource
kernel-syms
kernel-obs-build
gfs2-kmp-default
kernel-default-extra-debuginfo
kernel-default-extra
ocfs2-kmp-default-debuginfo
gfs2-kmp-default-debuginfo
dlm-kmp-default
cluster-md-kmp-default-debuginfo
ocfs2-kmp-default
cluster-md-kmp-default
dlm-kmp-default-debuginfo
kernel-default-base
linux-hwe-6.8 (Ubuntu package)
linux-azure-nvidia (Ubuntu package)
linux-ibm (Ubuntu package)
linux-oracle (Ubuntu package)
linux-oracle-6.8 (Ubuntu package)
linux-aws-6.8 (Ubuntu package)
linux-nvidia (Ubuntu package)
linux-raspi-realtime (Ubuntu package)
linux-realtime (Ubuntu package)
linux-realtime-6.8 (Ubuntu package)
linux-lowlatency (Ubuntu package)
linux-oem-6.11 (Ubuntu package)

How to mitigate CVE-2025-21981

Install update from vendor's website.

Linux kernel - update to 6.1.132
kernel-livepatch-6_4_0-150600_10_39-rt - 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_0-150600_10_39-rt-debuginfo - update to 1-150600.1.3.2
kernel-livepatch-6_4_0-150700_53_3-default - update to 1-150700.15.3.1
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-devel - addressed in versions 5.10.0-301.0.0.204, 6.6.0-145.0.12.138, 6.6.0-145.1.12.150
kernel - addressed in versions 5.10.0-301.0.0.204, 6.6.0-145.0.12.138, 6.6.0-145.1.12.150
bpftool - addressed in versions 5.10.0-301.0.0.204, 6.6.0-145.0.12.138, 6.6.0-145.1.12.150
bpftool-debuginfo - addressed in versions 5.10.0-301.0.0.204, 6.6.0-145.0.12.138, 6.6.0-145.1.12.150
kernel-debuginfo - addressed in versions 5.10.0-301.0.0.204, 6.6.0-145.0.12.138, 6.6.0-145.1.12.150
kernel-debugsource - addressed in versions 5.10.0-301.0.0.204, 6.6.0-145.0.12.138, 6.6.0-145.1.12.150
kernel-headers - addressed in versions 5.10.0-301.0.0.204, 6.6.0-145.0.12.138, 6.6.0-145.1.12.150
kernel-source - addressed in versions 5.10.0-301.0.0.204, 6.6.0-145.0.12.138, 6.6.0-145.1.12.150
kernel-tools - addressed in versions 5.10.0-301.0.0.204, 6.6.0-145.0.12.138, 6.6.0-145.1.12.150
kernel-tools-debuginfo - addressed in versions 5.10.0-301.0.0.204, 6.6.0-145.0.12.138, 6.6.0-145.1.12.150
kernel-tools-devel - addressed in versions 5.10.0-301.0.0.204, 6.6.0-145.0.12.138, 6.6.0-145.1.12.150
perf - addressed in versions 5.10.0-301.0.0.204, 6.6.0-145.0.12.138, 6.6.0-145.1.12.150
perf-debuginfo - addressed in versions 5.10.0-301.0.0.204, 6.6.0-145.0.12.138, 6.6.0-145.1.12.150
python3-perf - addressed in versions 5.10.0-301.0.0.204, 6.6.0-145.0.12.138, 6.6.0-145.1.12.150
python3-perf-debuginfo - addressed in versions 5.10.0-301.0.0.204, 6.6.0-145.0.12.138, 6.6.0-145.1.12.150
linux-aws-fips (Ubuntu package) - addressed in versions 5.15.0.142.82, 5.15.0-142.152+fips1, 5.15.0.1085.75, 5.15.0-1085.94+fips1, 5.15.0.1086.82, 5.15.0-1086.93+fips1
linux (Ubuntu package) - addressed in versions 5.15.0.142.128, 5.15.0.142.137, 5.15.0-142.152, 5.15.0-1028.28, 5.15.0.1028.30, 5.15.0.1039.39, 5.15.0-1039.39, 5.15.0.1068.67, 5.15.0-1068.76, 5.15.0.1078.74, 5.15.0-1078.81, 5.15.0.1080.80, 5.15.0-1080.81, 5.15.0.1082.78, 5.15.0-1082.87, 5.15.0.1083.79, 5.15.0.1083.82, 5.15.0-1083.89, 5.15.0.1085.81, 5.15.0-1085.94, 6.8.0-84.84, 6.8.0-84.84.1, 6.8.0-84.84.1~22.04.1, 6.8.0-1023.25, 6.8.0-1036.40, 6.8.0-1039.41, 6.8.0-1040.42, 6.11.0-28.28, 6.11.0-28.28~24.04.1, 6.11.0-1011.11, 6.11.0-1014.14, 6.11.0-1015.16, 6.11.0-1016.16, 6.11.0-1016.16~24.04.1, 6.11.0-1017.18
linux-hwe-5.15 (Ubuntu package) - addressed in versions 5.15.0-142.152~20.04.1, 5.15.0.142.152~20.04.1
linux-aws-5.15 (Ubuntu package) - addressed in versions 5.15.0-142.152~20.04.1, 5.15.0.142.152~20.04.1, 5.15.0.1078.81~20.04.1, 5.15.0-1078.81~20.04.1, 5.15.0-1083.89~20.04.1, 5.15.0.1083.89~20.04.1, 5.15.0-1085.94~20.04.1, 5.15.0.1085.94~20.04.1, 5.15.0-1086.93~20.04.1, 5.15.0.1086.93~20.04.1
linux-xilinx-zynqmp (Ubuntu package) - addressed in versions 5.15.0.1050.53, 5.15.0-1050.54
linux-intel-iot-realtime (Ubuntu package) - addressed in versions 5.15.0-1079.81, 5.15.0.1079.83, 5.15.0.1086.90, 5.15.0-1086.95
linux-raspi (Ubuntu package) - addressed in versions 5.15.0.1080.78, 5.15.0-1080.83, 6.8.0-1039.43
linux-intel-iotg (Ubuntu package) - addressed in versions 5.15.0.1081.81, 5.15.0-1081.87
linux-intel-iotg-5.15 (Ubuntu package) - addressed in versions 5.15.0-1083.89~20.04.1, 5.15.0.1083.89~20.04.1
linux-aws (Ubuntu package) - addressed in versions 5.15.0.1086.89, 5.15.0-1086.93
linux-azure-fips (Ubuntu package) - addressed in versions 5.15.0.1091.76, 5.15.0-1091.100+fips1
linux-azure (Ubuntu package) - addressed in versions 5.15.0.1091.89, 5.15.0-1091.100, 6.8.0-1036.42~22.04.1, 6.8.0-1038.44, 6.11.0-1018.18, 6.11.0-1018.18~24.04.1
linux-azure-5.15 (Ubuntu package) - addressed in versions 5.15.0-1091.100~20.04.1, 5.15.0.1091.100~20.04.1
linux (Debian package) - update to 6.1.133-1
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-syms-coco - update to 6.4.0-15061.21.coco15sp6.1
kernel-coco_debug-debuginfo - 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 - 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_debug - 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
cluster-md-kmp-azure - update to 6.4.0-150600.8.37.1
reiserfs-kmp-azure - 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-devel-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-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
ocfs2-kmp-azure-debuginfo - update to 6.4.0-150600.8.37.1
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
ocfs2-kmp-azure - update to 6.4.0-150600.8.37.1
kernel-azure-optional-debuginfo - update to 6.4.0-150600.8.37.1
kernel-azure-devel - addressed in versions 6.4.0-150600.8.37.1, 6.4.0-150700.20.3.1
kselftests-kmp-azure - update to 6.4.0-150600.8.37.1
kernel-azure-devel-debuginfo - addressed in versions 6.4.0-150600.8.37.1, 6.4.0-150700.20.3.1
kselftests-kmp-azure-debuginfo - update to 6.4.0-150600.8.37.1
gfs2-kmp-azure-debuginfo - update to 6.4.0-150600.8.37.1
kernel-azure-extra-debuginfo - update to 6.4.0-150600.8.37.1
dlm-kmp-azure - update to 6.4.0-150600.8.37.1
kernel-azure-extra - update to 6.4.0-150600.8.37.1
reiserfs-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
cluster-md-kmp-azure-debuginfo - update to 6.4.0-150600.8.37.1
kernel-rt-vdso - update to 6.4.0-150600.10.39.1
kernel-rt_debug-devel - update to 6.4.0-150600.10.39.1
cluster-md-kmp-rt-debuginfo - update to 6.4.0-150600.10.39.1
gfs2-kmp-rt-debuginfo - update to 6.4.0-150600.10.39.1
ocfs2-kmp-rt-debuginfo - update to 6.4.0-150600.10.39.1
kselftests-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
kernel-rt_debug-vdso-debuginfo - update to 6.4.0-150600.10.39.1
gfs2-kmp-rt - update to 6.4.0-150600.10.39.1
kernel-rt-devel-debuginfo - update to 6.4.0-150600.10.39.1
reiserfs-kmp-rt - update to 6.4.0-150600.10.39.1
cluster-md-kmp-rt - update to 6.4.0-150600.10.39.1
kernel-rt-debugsource - update to 6.4.0-150600.10.39.1
kernel-rt-extra - update to 6.4.0-150600.10.39.1
kernel-rt_debug - update to 6.4.0-150600.10.39.1
kernel-rt - update to 6.4.0-150600.10.39.1
kernel-source-rt - update to 6.4.0-150600.10.39.1
kernel-devel-rt - update to 6.4.0-150600.10.39.1
kernel-rt-devel - update to 6.4.0-150600.10.39.1
kernel-rt-extra-debuginfo - update to 6.4.0-150600.10.39.1
kernel-syms-rt - update to 6.4.0-150600.10.39.1
kernel-rt_debug-debuginfo - update to 6.4.0-150600.10.39.1
kernel-rt_debug-vdso - update to 6.4.0-150600.10.39.1
kernel-rt-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-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 - update to 6.4.0-150600.10.39.1
kselftests-kmp-rt - update to 6.4.0-150600.10.39.1
kernel-rt_debug-debugsource - update to 6.4.0-150600.10.39.1
dlm-kmp-rt - update to 6.4.0-150600.10.39.1
kernel-rt-optional - update to 6.4.0-150600.10.39.1
ocfs2-kmp-rt - update to 6.4.0-150600.10.39.1
kernel-rt_debug-devel-debuginfo - update to 6.4.0-150600.10.39.1
kernel-default - update to 6.4.0-150700.53.3.1
reiserfs-kmp-default - update to 6.4.0-150700.53.3.1
reiserfs-kmp-default-debuginfo - update to 6.4.0-150700.53.3.1
kernel-default-debugsource - update to 6.4.0-150700.53.3.1
kernel-default-debuginfo - update to 6.4.0-150700.53.3.1
kernel-docs - update to 6.4.0-150700.53.3.1
kernel-64kb-devel-debuginfo - update to 6.4.0-150700.53.3.1
kernel-default-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
kernel-64kb-devel - update to 6.4.0-150700.53.3.1
kernel-64kb - update to 6.4.0-150700.53.3.1
kernel-default-devel - update to 6.4.0-150700.53.3.1
kernel-devel - update to 6.4.0-150700.53.3.1
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-macros - update to 6.4.0-150700.53.3.1
kernel-zfcpdump - update to 6.4.0-150700.53.3.1
kernel-zfcpdump-debuginfo - update to 6.4.0-150700.53.3.1
kernel-zfcpdump-debugsource - update to 6.4.0-150700.53.3.1
kernel-obs-build-debugsource - update to 6.4.0-150700.53.3.1
kernel-syms - update to 6.4.0-150700.53.3.1
kernel-obs-build - update to 6.4.0-150700.53.3.1
kernel-source - update to 6.4.0-150700.53.3.1
gfs2-kmp-default - 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
ocfs2-kmp-default-debuginfo - update to 6.4.0-150700.53.3.1
gfs2-kmp-default-debuginfo - update to 6.4.0-150700.53.3.1
dlm-kmp-default - update to 6.4.0-150700.53.3.1
cluster-md-kmp-default-debuginfo - update to 6.4.0-150700.53.3.1
ocfs2-kmp-default - update to 6.4.0-150700.53.3.1
cluster-md-kmp-default - update to 6.4.0-150700.53.3.1
dlm-kmp-default-debuginfo - update to 6.4.0-150700.53.3.1
kernel-default-base - update to 6.4.0-150700.53.3.1.150700.17.2.1
linux-hwe-6.8 (Ubuntu package) - addressed in versions 6.8.0-84.84~22.04.1, 6.8.0-85.85~22.04.1
linux-azure-nvidia (Ubuntu package) - update to 6.8.0-1025.27
linux-ibm (Ubuntu package) - addressed in versions 6.8.0-1037.37, 6.8.0-1037.37~22.04.1
linux-oracle (Ubuntu package) - update to 6.8.0-1037.38
linux-oracle-6.8 (Ubuntu package) - update to 6.8.0-1037.38~22.04.1
linux-aws-6.8 (Ubuntu package) - addressed in versions 6.8.0-1039.41~22.04.1, 6.8.0-1040.42~22.04.1
linux-nvidia (Ubuntu package) - addressed in versions 6.8.0-1039.42, 6.8.0-1039.42.1, 6.8.0-1039.42~22.04.1
linux-raspi-realtime (Ubuntu package) - update to 6.8.0-2031.32
linux-realtime (Ubuntu package) - update to 6.8.1-1034.35
linux-realtime-6.8 (Ubuntu package) - update to 6.8.1-1034.35~22.04.1
linux-lowlatency (Ubuntu package) - addressed in versions 6.11.0-1015.16, 6.11.0-1015.16~24.04.2
linux-oem-6.11 (Ubuntu package) - update to 6.11.0-1024.24

External References

Related Security Bulletins