Division by zero in Linux kernel - CVE-2025-21898

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU106846

Division by zero in Linux kernel - CVE-2025-21898

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


Vulnerability identifier: #VU106846
CSH Severity: Low
CVSS v4 BT: 4.3 [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/E:U/U:Clear]
CVE-ID: CVE-2025-21898
CWE-ID: CWE-369
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 a division by zero error within the function_stat_show() function in kernel/trace/ftrace.c. A local user can perform a denial of service (DoS) attack.


Affected software

Linux kernel
Debian Linux
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Workstation Extension 15
Confidential Computing Module
SUSE Linux Enterprise Live Patching
Legacy Module
Development Tools Module
Basesystem Module
openSUSE Leap
Ubuntu
openEuler
kernel-livepatch-6_4_0-150600_23_60-default-debuginfo
kernel-livepatch-SLE15-SP6_Update_13-debugsource
kernel-livepatch-6_4_0-150600_23_60-default
linux (Ubuntu package)
linux-hwe-5.4 (Ubuntu package)
linux-iot (Ubuntu package)
linux-xilinx-zynqmp (Ubuntu package)
linux-ibm (Ubuntu package)
linux-ibm-5.4 (Ubuntu package)
linux-bluefield (Ubuntu package)
linux-aws-fips (Ubuntu package)
linux-raspi (Ubuntu package)
linux-raspi-5.4 (Ubuntu package)
linux-azure (Ubuntu package)
linux-oracle-5.4 (Ubuntu package)
linux-aws (Ubuntu package)
linux-aws-5.4 (Ubuntu package)
linux-gcp-fips (Ubuntu package)
linux-azure-fips (Ubuntu package)
kernel
perf
python3-perf-debuginfo
python3-perf
perf-debuginfo
kernel-headers
kernel-devel
kernel-tools-devel
kernel-tools-debuginfo
kernel-debugsource
kernel-source
kernel-tools
kernel-debuginfo
bpftool
bpftool-debuginfo
linux-hwe-5.15 (Ubuntu package)
linux-intel-iot-realtime (Ubuntu package)
linux-gke (Ubuntu package)
linux-gcp (Ubuntu package)
linux-gcp-5.15 (Ubuntu package)
linux-aws-5.15 (Ubuntu package)
linux (Debian package)
kernel-coco_debug-debugsource
kernel-coco
kernel-coco_debug
kernel-coco_debug-devel
kernel-coco-devel
kernel-coco_debug-debuginfo
kernel-coco_debug-devel-debuginfo
kernel-coco-debuginfo
reiserfs-kmp-coco-debuginfo
kernel-coco-debugsource
reiserfs-kmp-coco
kernel-coco-vdso-debuginfo
kernel-syms-coco
kernel-source-coco
kernel-devel-coco
kernel-obs-qa
dtb-qcom
kernel-docs
kernel-docs-html
dtb-lg
dtb-apple
dtb-arm
dtb-amd
dtb-aarch64
kernel-obs-build-debugsource
kernel-obs-build
dtb-altera
dtb-socionext
dtb-allwinner
dtb-hisilicon
dtb-nvidia
dtb-apm
dtb-cavium
dtb-amazon
dtb-broadcom
dtb-sprd
dtb-freescale
dtb-marvell
dtb-amlogic
dtb-rockchip
dtb-xilinx
dtb-mediatek
dtb-renesas
dtb-exynos
kernel-syms
kernel-kvmsmall
kernel-kvmsmall-debuginfo
kernel-zfcpdump
kernel-zfcpdump-debuginfo
kernel-zfcpdump-debugsource
kernel-64kb-optional-debuginfo
reiserfs-kmp-64kb-debuginfo
dlm-kmp-64kb
kernel-64kb-debugsource
kernel-64kb-extra
cluster-md-kmp-64kb-debuginfo
cluster-md-kmp-64kb
kselftests-kmp-64kb-debuginfo
kernel-64kb-optional
kernel-debug-vdso
kernel-kvmsmall-vdso-debuginfo
kernel-kvmsmall-devel
kernel-debug-debugsource
kernel-debug-debuginfo
kernel-debug-devel
kernel-debug-devel-debuginfo
kernel-debug
kernel-kvmsmall-vdso
kernel-source-vanilla
kernel-macros
kernel-64kb
kernel-debug-vdso-debuginfo
kernel-64kb-devel-debuginfo
kernel-64kb-extra-debuginfo
reiserfs-kmp-64kb
dlm-kmp-64kb-debuginfo
kernel-64kb-debuginfo
ocfs2-kmp-64kb
gfs2-kmp-64kb-debuginfo
kernel-64kb-devel
kernel-kvmsmall-devel-debuginfo
kernel-kvmsmall-debugsource
ocfs2-kmp-64kb-debuginfo
kselftests-kmp-64kb
gfs2-kmp-64kb
kernel-default
kernel-default-vdso
kernel-default-optional-debuginfo
dlm-kmp-default-debuginfo
reiserfs-kmp-default
kselftests-kmp-default-debuginfo
gfs2-kmp-default
ocfs2-kmp-default
kernel-default-debuginfo
cluster-md-kmp-default
kernel-default-optional
kernel-default-devel
kernel-default-debugsource
dlm-kmp-default
cluster-md-kmp-default-debuginfo
gfs2-kmp-default-debuginfo
kselftests-kmp-default
reiserfs-kmp-default-debuginfo
ocfs2-kmp-default-debuginfo
kernel-default-livepatch
kernel-default-extra
kernel-default-devel-debuginfo
kernel-default-extra-debuginfo
kernel-default-livepatch-devel
kernel-default-vdso-debuginfo
kernel-default-base-rebuild
kernel-default-base
linux-hwe-6.8 (Ubuntu package)
linux-azure-nvidia (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)

How to mitigate CVE-2025-21898

Install update from vendor's website.

Linux kernel - update to 6.6.81
kernel-livepatch-6_4_0-150600_23_60-default-debuginfo - update to 1-150600.13.6.4
kernel-livepatch-SLE15-SP6_Update_13-debugsource - update to 1-150600.13.6.4
kernel-livepatch-6_4_0-150600_23_60-default - update to 1-150600.13.6.4
linux (Ubuntu package) - addressed in versions 5.4.0.216.208, 5.4.0-216.236, 5.4.0.1144.138, 5.4.0-1144.154, 5.4.0.1149.151, 5.4.0-1149.158, 5.4.0.1149.158~18.04.1, 5.4.0-1149.158~18.04.1, 5.4.0.1151.158~18.04.1, 5.4.0-1151.158~18.04.1, 5.15.0.140.126, 5.15.0.140.135, 5.15.0-140.150, 5.15.0.140.150~20.04.1, 5.15.0-140.150~20.04.1, 5.15.0.1066.65, 5.15.0-1066.74, 5.15.0.1076.72, 5.15.0-1076.79, 5.15.0-1076.79~20.04.1, 5.15.0.1076.79~20.04.1, 5.15.0.1078.78, 5.15.0-1078.79, 5.15.0.1079.79, 5.15.0-1079.85, 5.15.0.1080.76, 5.15.0-1080.85, 5.15.0.1081.77, 5.15.0-1081.87, 5.15.0-1081.87~20.04.1, 5.15.0.1081.87~20.04.1, 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, 6.11.0-26.26, 6.11.0-26.26~24.04.1, 6.11.0-1010.10, 6.11.0-1013.13, 6.11.0-1015.15, 6.11.0-1015.15~24.04.1, 6.11.0-1022.22
linux-hwe-5.4 (Ubuntu package) - addressed in versions 5.4.0.216.236~18.04.1, 5.4.0-216.236~18.04.1
linux-iot (Ubuntu package) - update to 5.4.0-1051.54
linux-xilinx-zynqmp (Ubuntu package) - addressed in versions 5.4.0.1064.64, 5.4.0-1064.68, 5.15.0.1050.53, 5.15.0-1050.54
linux-ibm (Ubuntu package) - addressed in versions 5.4.0-1092.97, 5.4.0.1092.121, 6.8.0-1037.37, 6.8.0-1037.37~22.04.1
linux-ibm-5.4 (Ubuntu package) - addressed in versions 5.4.0.1092.97~18.04.1, 5.4.0-1092.97~18.04.1
linux-bluefield (Ubuntu package) - addressed in versions 5.4.0.1105.101, 5.4.0-1105.112
linux-aws-fips (Ubuntu package) - addressed in versions 5.4.0.1120.117, 5.4.0-1120.130, 5.4.0.1146.93, 5.4.0-1146.156+fips1, 5.15.0.1084.80, 5.15.0-1084.91+fips1
linux-raspi (Ubuntu package) - addressed in versions 5.4.0-1129.142, 5.4.0.1129.160, 6.8.0-1039.43
linux-raspi-5.4 (Ubuntu package) - addressed in versions 5.4.0.1129.142~18.04.1, 5.4.0-1129.142~18.04.1
linux-azure (Ubuntu package) - addressed in versions 5.4.0.1133.129, 5.4.0-1133.142, 5.4.0.1151.145, 5.4.0-1151.158, 5.15.0-1037.37, 5.15.0.1037.37, 5.15.0.1089.87, 5.15.0-1089.98, 5.15.0-1089.98~20.04.1, 5.15.0.1089.98~20.04.1, 6.8.0-1036.42~22.04.1, 6.8.0-1038.44
linux-oracle-5.4 (Ubuntu package) - addressed in versions 5.4.0.1144.154~18.04.1, 5.4.0-1144.154~18.04.1
linux-aws (Ubuntu package) - addressed in versions 5.4.0.1146.143, 5.4.0-1146.156, 5.15.0-1026.26, 5.15.0.1026.28, 5.15.0.1078.76, 5.15.0-1078.81, 5.15.0.1079.85~20.04.1, 5.15.0-1079.85~20.04.1, 5.15.0.1084.86, 5.15.0-1084.91, 6.11.0-1014.15
linux-aws-5.4 (Ubuntu package) - addressed in versions 5.4.0.1146.156~18.04.1, 5.4.0-1146.156~18.04.1
linux-gcp-fips (Ubuntu package) - addressed in versions 5.4.0.1149.91, 5.4.0-1149.158+fips1, 5.15.0.1083.73, 5.15.0-1083.92+fips1
linux-azure-fips (Ubuntu package) - addressed in versions 5.4.0.1151.88, 5.4.0-1151.158+fips1, 5.15.0.1089.74, 5.15.0-1089.98+fips1
kernel - addressed in versions 5.10.0-261.0.0.163, 5.10.0-261.0.0.164, 6.6.0-87.0.0.82, 6.6.0-87.0.0.93
perf - addressed in versions 5.10.0-261.0.0.163, 5.10.0-261.0.0.164, 6.6.0-87.0.0.82, 6.6.0-87.0.0.93
python3-perf-debuginfo - addressed in versions 5.10.0-261.0.0.163, 5.10.0-261.0.0.164, 6.6.0-87.0.0.82, 6.6.0-87.0.0.93
python3-perf - addressed in versions 5.10.0-261.0.0.163, 5.10.0-261.0.0.164, 6.6.0-87.0.0.82, 6.6.0-87.0.0.93
perf-debuginfo - addressed in versions 5.10.0-261.0.0.163, 5.10.0-261.0.0.164, 6.6.0-87.0.0.82, 6.6.0-87.0.0.93
kernel-headers - addressed in versions 5.10.0-261.0.0.163, 5.10.0-261.0.0.164, 6.6.0-87.0.0.82, 6.6.0-87.0.0.93
kernel-devel - addressed in versions 5.10.0-261.0.0.163, 5.10.0-261.0.0.164, 6.6.0-87.0.0.82, 6.6.0-87.0.0.93
kernel-tools-devel - addressed in versions 5.10.0-261.0.0.163, 5.10.0-261.0.0.164, 6.6.0-87.0.0.82, 6.6.0-87.0.0.93
kernel-tools-debuginfo - addressed in versions 5.10.0-261.0.0.163, 5.10.0-261.0.0.164, 6.6.0-87.0.0.82, 6.6.0-87.0.0.93
kernel-debugsource - addressed in versions 5.10.0-261.0.0.163, 5.10.0-261.0.0.164, 6.6.0-87.0.0.82, 6.6.0-87.0.0.93
kernel-source - addressed in versions 5.10.0-261.0.0.163, 5.10.0-261.0.0.164, 6.6.0-87.0.0.82, 6.6.0-87.0.0.93
kernel-tools - addressed in versions 5.10.0-261.0.0.163, 5.10.0-261.0.0.164, 6.6.0-87.0.0.82, 6.6.0-87.0.0.93
kernel-debuginfo - addressed in versions 5.10.0-261.0.0.163, 5.10.0-261.0.0.164, 6.6.0-87.0.0.82, 6.6.0-87.0.0.93
bpftool - addressed in versions 5.10.0-261.0.0.164, 6.6.0-87.0.0.82, 6.6.0-87.0.0.93
bpftool-debuginfo - addressed in versions 5.10.0-261.0.0.164, 6.6.0-87.0.0.82, 6.6.0-87.0.0.93
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-intel-iot-realtime (Ubuntu package) - addressed in versions 5.15.0-1077.79, 5.15.0.1077.81, 5.15.0.1084.88, 5.15.0-1084.93
linux-gke (Ubuntu package) - addressed in versions 5.15.0.1081.80, 5.15.0-1081.87
linux-gcp (Ubuntu package) - addressed in versions 5.15.0.1083.79, 5.15.0-1083.92
linux-gcp-5.15 (Ubuntu package) - addressed in versions 5.15.0-1083.92~20.04.1, 5.15.0.1083.92~20.04.1
linux-aws-5.15 (Ubuntu package) - addressed in versions 5.15.0.1084.91~20.04.1, 5.15.0-1084.91~20.04.1
linux (Debian package) - update to 6.1.133-1
kernel-coco_debug-debugsource - update to 6.4.0-15061.28.coco15sp6.1
kernel-coco - update to 6.4.0-15061.28.coco15sp6.1
kernel-coco_debug - update to 6.4.0-15061.28.coco15sp6.1
kernel-coco_debug-devel - update to 6.4.0-15061.28.coco15sp6.1
kernel-coco-devel - update to 6.4.0-15061.28.coco15sp6.1
kernel-coco_debug-debuginfo - update to 6.4.0-15061.28.coco15sp6.1
kernel-coco_debug-devel-debuginfo - update to 6.4.0-15061.28.coco15sp6.1
kernel-coco-debuginfo - update to 6.4.0-15061.28.coco15sp6.1
reiserfs-kmp-coco-debuginfo - update to 6.4.0-15061.28.coco15sp6.1
kernel-coco-debugsource - update to 6.4.0-15061.28.coco15sp6.1
reiserfs-kmp-coco - update to 6.4.0-15061.28.coco15sp6.1
kernel-coco-vdso-debuginfo - update to 6.4.0-15061.28.coco15sp6.1
kernel-syms-coco - update to 6.4.0-15061.28.coco15sp6.1
kernel-source-coco - update to 6.4.0-15061.28.coco15sp6.1
kernel-devel-coco - update to 6.4.0-15061.28.coco15sp6.1
kernel-obs-qa - update to 6.4.0-150600.23.60.2
dtb-qcom - update to 6.4.0-150600.23.60.3
kernel-docs - update to 6.4.0-150600.23.60.3
kernel-docs-html - update to 6.4.0-150600.23.60.3
dtb-lg - update to 6.4.0-150600.23.60.3
dtb-apple - update to 6.4.0-150600.23.60.3
dtb-arm - update to 6.4.0-150600.23.60.3
dtb-amd - update to 6.4.0-150600.23.60.3
dtb-aarch64 - update to 6.4.0-150600.23.60.3
kernel-obs-build-debugsource - update to 6.4.0-150600.23.60.3
kernel-obs-build - update to 6.4.0-150600.23.60.3
dtb-altera - update to 6.4.0-150600.23.60.3
dtb-socionext - update to 6.4.0-150600.23.60.3
dtb-allwinner - update to 6.4.0-150600.23.60.3
dtb-hisilicon - update to 6.4.0-150600.23.60.3
dtb-nvidia - update to 6.4.0-150600.23.60.3
dtb-apm - update to 6.4.0-150600.23.60.3
dtb-cavium - update to 6.4.0-150600.23.60.3
dtb-amazon - update to 6.4.0-150600.23.60.3
dtb-broadcom - update to 6.4.0-150600.23.60.3
dtb-sprd - update to 6.4.0-150600.23.60.3
dtb-freescale - update to 6.4.0-150600.23.60.3
dtb-marvell - update to 6.4.0-150600.23.60.3
dtb-amlogic - update to 6.4.0-150600.23.60.3
dtb-rockchip - update to 6.4.0-150600.23.60.3
dtb-xilinx - update to 6.4.0-150600.23.60.3
dtb-mediatek - update to 6.4.0-150600.23.60.3
dtb-renesas - update to 6.4.0-150600.23.60.3
dtb-exynos - update to 6.4.0-150600.23.60.3
kernel-syms - update to 6.4.0-150600.23.60.4
kernel-kvmsmall - update to 6.4.0-150600.23.60.4
kernel-kvmsmall-debuginfo - update to 6.4.0-150600.23.60.4
kernel-zfcpdump - update to 6.4.0-150600.23.60.4
kernel-zfcpdump-debuginfo - update to 6.4.0-150600.23.60.4
kernel-zfcpdump-debugsource - update to 6.4.0-150600.23.60.4
kernel-64kb-optional-debuginfo - update to 6.4.0-150600.23.60.4
reiserfs-kmp-64kb-debuginfo - update to 6.4.0-150600.23.60.4
dlm-kmp-64kb - update to 6.4.0-150600.23.60.4
kernel-64kb-debugsource - update to 6.4.0-150600.23.60.4
kernel-64kb-extra - update to 6.4.0-150600.23.60.4
cluster-md-kmp-64kb-debuginfo - update to 6.4.0-150600.23.60.4
cluster-md-kmp-64kb - update to 6.4.0-150600.23.60.4
kselftests-kmp-64kb-debuginfo - update to 6.4.0-150600.23.60.4
kernel-64kb-optional - update to 6.4.0-150600.23.60.4
kernel-debug-vdso - update to 6.4.0-150600.23.60.4
kernel-kvmsmall-vdso-debuginfo - update to 6.4.0-150600.23.60.4
kernel-kvmsmall-devel - update to 6.4.0-150600.23.60.4
kernel-debug-debugsource - update to 6.4.0-150600.23.60.4
kernel-debug-debuginfo - update to 6.4.0-150600.23.60.4
kernel-debug-devel - update to 6.4.0-150600.23.60.4
kernel-debug-devel-debuginfo - update to 6.4.0-150600.23.60.4
kernel-debug - update to 6.4.0-150600.23.60.4
kernel-kvmsmall-vdso - update to 6.4.0-150600.23.60.4
kernel-source-vanilla - update to 6.4.0-150600.23.60.4
kernel-devel - update to 6.4.0-150600.23.60.4
kernel-source - update to 6.4.0-150600.23.60.4
kernel-macros - update to 6.4.0-150600.23.60.4
kernel-64kb - update to 6.4.0-150600.23.60.4
kernel-debug-vdso-debuginfo - update to 6.4.0-150600.23.60.4
kernel-64kb-devel-debuginfo - update to 6.4.0-150600.23.60.4
kernel-64kb-extra-debuginfo - update to 6.4.0-150600.23.60.4
reiserfs-kmp-64kb - update to 6.4.0-150600.23.60.4
dlm-kmp-64kb-debuginfo - update to 6.4.0-150600.23.60.4
kernel-64kb-debuginfo - update to 6.4.0-150600.23.60.4
ocfs2-kmp-64kb - update to 6.4.0-150600.23.60.4
gfs2-kmp-64kb-debuginfo - update to 6.4.0-150600.23.60.4
kernel-64kb-devel - update to 6.4.0-150600.23.60.4
kernel-kvmsmall-devel-debuginfo - update to 6.4.0-150600.23.60.4
kernel-kvmsmall-debugsource - update to 6.4.0-150600.23.60.4
ocfs2-kmp-64kb-debuginfo - update to 6.4.0-150600.23.60.4
kselftests-kmp-64kb - update to 6.4.0-150600.23.60.4
gfs2-kmp-64kb - update to 6.4.0-150600.23.60.4
kernel-default - update to 6.4.0-150600.23.60.5
kernel-default-vdso - update to 6.4.0-150600.23.60.5
kernel-default-optional-debuginfo - update to 6.4.0-150600.23.60.5
dlm-kmp-default-debuginfo - update to 6.4.0-150600.23.60.5
reiserfs-kmp-default - update to 6.4.0-150600.23.60.5
kselftests-kmp-default-debuginfo - update to 6.4.0-150600.23.60.5
gfs2-kmp-default - update to 6.4.0-150600.23.60.5
ocfs2-kmp-default - update to 6.4.0-150600.23.60.5
kernel-default-debuginfo - update to 6.4.0-150600.23.60.5
cluster-md-kmp-default - update to 6.4.0-150600.23.60.5
kernel-default-optional - update to 6.4.0-150600.23.60.5
kernel-default-devel - update to 6.4.0-150600.23.60.5
kernel-default-debugsource - update to 6.4.0-150600.23.60.5
dlm-kmp-default - update to 6.4.0-150600.23.60.5
cluster-md-kmp-default-debuginfo - update to 6.4.0-150600.23.60.5
gfs2-kmp-default-debuginfo - update to 6.4.0-150600.23.60.5
kselftests-kmp-default - update to 6.4.0-150600.23.60.5
reiserfs-kmp-default-debuginfo - update to 6.4.0-150600.23.60.5
ocfs2-kmp-default-debuginfo - update to 6.4.0-150600.23.60.5
kernel-default-livepatch - update to 6.4.0-150600.23.60.5
kernel-default-extra - update to 6.4.0-150600.23.60.5
kernel-default-devel-debuginfo - update to 6.4.0-150600.23.60.5
kernel-default-extra-debuginfo - update to 6.4.0-150600.23.60.5
kernel-default-livepatch-devel - update to 6.4.0-150600.23.60.5
kernel-default-vdso-debuginfo - update to 6.4.0-150600.23.60.5
kernel-default-base-rebuild - update to 6.4.0-150600.23.60.5.150600.12.26.4
kernel-default-base - update to 6.4.0-150600.23.60.5.150600.12.26.4
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-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 6.11.0-1014.15, 6.11.0-1014.15~24.04.1, 6.11.0-1016.17

External References

Related Security Bulletins