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Vulnerability · Published Apr 1, 2025 · Assigned by Linux

CVE-2025-21898ftrace: Avoid potential division by zero in function_stat_show()

Medium 5.5

In plain English

A medium-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.2%top 85.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: ftrace: Avoid potential division by zero in function_stat_show() Check whether denominator expression x * (x - 1) * 1000 mod {2^32, 2^64} produce zero and skip stddev computation in that case. For now don't care about rec->counter * rec->counter overflow because rec->time * rec->time overflow will likely happen earlier.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.133-1DSA-5900-1
Debian:12linux6.1.133-1DEBIAN-CVE-2025-21898
Debian:13linux6.12.19-1DEBIAN-CVE-2025-21898
Debian:14linux6.12.19-1DEBIAN-CVE-2025-21898
Ubuntu:22.04:LTSlinux5.15.0-140.150UBUNTU-CVE-2025-21898
Ubuntu:24.04:LTSlinux6.8.0-84.84USN-7764-1
Ubuntu:24.04:LTSlinux6.8.0-84.84UBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-aws5.15.0-1084.91UBUNTU-CVE-2025-21898
Ubuntu:24.04:LTSlinux-aws6.8.0-1039.41UBUNTU-CVE-2025-21898
Ubuntu:24.04:LTSlinux-aws6.8.0-1039.41USN-7764-1
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1039.41~22.04.1USN-7766-1
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1039.41~22.04.1UBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-azure5.15.0-1089.98UBUNTU-CVE-2025-21898
Ubuntu:24.04:LTSlinux-azure6.8.0-1038.44UBUNTU-CVE-2025-21898
Ubuntu:24.04:LTSlinux-azure6.8.0-1038.44USN-7802-1
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2025-21898
Ubuntu:24.04:LTSlinux-azure-6.116.11.0-1015.15~24.04.1UBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1036.42~22.04.1UBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1036.42~22.04.1USN-7802-1
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1089.98.1UBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2025-21898
Ubuntu:24.04:LTSlinux-azure-nvidia6.8.0-1025.27USN-7809-1
Ubuntu:24.04:LTSlinux-azure-nvidia6.8.0-1025.27UBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-gcp5.15.0-1083.92UBUNTU-CVE-2025-21898
Ubuntu:24.04:LTSlinux-gcp6.8.0-1040.42UBUNTU-CVE-2025-21898
Ubuntu:24.04:LTSlinux-gcp6.8.0-1040.42USN-7764-1
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2025-21898
Ubuntu:24.04:LTSlinux-gcp-6.116.11.0-1015.15~24.04.1UBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1040.42~22.04.1UBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1040.42~22.04.1USN-7766-1
Ubuntu:22.04:LTSlinux-gke5.15.0-1081.87UBUNTU-CVE-2025-21898
Ubuntu:24.04:LTSlinux-gke6.8.0-1036.40UBUNTU-CVE-2025-21898
Ubuntu:24.04:LTSlinux-gke6.8.0-1036.40USN-7764-1
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1066.74UBUNTU-CVE-2025-21898
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1023.25UBUNTU-CVE-2025-21898
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1023.25USN-7764-1
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2025-21898
Ubuntu:24.04:LTSlinux-hwe-6.116.11.0-26.26~24.04.1UBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-85.85~22.04.1USN-7801-1
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-84.84~22.04.1USN-7764-2
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-85.85~22.04.1UBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-ibm5.15.0-1076.79UBUNTU-CVE-2025-21898
Ubuntu:24.04:LTSlinux-ibm6.8.0-1037.37UBUNTU-CVE-2025-21898
Ubuntu:24.04:LTSlinux-ibm6.8.0-1037.37USN-7779-1
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1037.37~22.04.1UBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1037.37~22.04.1USN-7779-1
Ubuntu:24.04:LTSlinux-intelno fix listedUBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1079.85UBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-kvm5.15.0-1080.85UBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-140.150UBUNTU-CVE-2025-21898
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-84.84.1UBUNTU-CVE-2025-21898
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-84.84.1USN-7764-1
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2025-21898
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.116.11.0-1014.15~24.04.1UBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-84.84.1~22.04.1UBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-84.84.1~22.04.1USN-7764-1
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1078.79UBUNTU-CVE-2025-21898
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1039.42UBUNTU-CVE-2025-21898
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1039.42USN-7765-1
Ubuntu:24.04:LTSlinux-nvidia-6.116.11.0-1010.10UBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1039.42~22.04.1UBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1039.42~22.04.1USN-7765-1
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1039.42.1USN-7765-1
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1039.42.1UBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1037.37UBUNTU-CVE-2025-21898
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1010.10UBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1026.26UBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2025-21898
Ubuntu:24.04:LTSlinux-oem-6.116.11.0-1022.22UBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2025-21898
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-oracle5.15.0-1081.87UBUNTU-CVE-2025-21898
Ubuntu:24.04:LTSlinux-oracle6.8.0-1037.38UBUNTU-CVE-2025-21898
Ubuntu:24.04:LTSlinux-oracle6.8.0-1037.38USN-7801-2
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1037.38~22.04.1UBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1037.38~22.04.1USN-7801-3
Ubuntu:22.04:LTSlinux-raspi5.15.0-1078.81UBUNTU-CVE-2025-21898
Ubuntu:24.04:LTSlinux-raspi6.8.0-1039.43UBUNTU-CVE-2025-21898
Ubuntu:24.04:LTSlinux-raspi6.8.0-1039.43USN-7790-1
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-21898
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-21898
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-riscv-6.86.8.0-84.84~22.04.1UBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2025-21898
Ubuntu:24.04:LTSlinux-xilinx6.8.0-1018.19UBUNTU-CVE-2025-21898
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1050.54UBUNTU-CVE-2025-21898

Affected products (as reported)

VendorProductVersions
Linux Linux f0629ee3922f10112584b1898491fecc74d98b3b – before 5b3d32f607f0478b414b16516cf27f9170cf66c8e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d – before ca381f60a3bb7cfaa618d73ca411610bd7fc3149e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d – before 3d738b53ed6cddb68e68c9874520a4bf846163b5e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d – before 992775227843c9376773784b8b362add44592ad7e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d – before f58a3f8e284d0bdf94164a8e61cd4e70d337a1a3e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d – before 746cc474a95473591853927b3a9792a2d671155be31f7939c1c27faa5d0e3f14519eaf7c89e8a69d – before 9cdac46fa7e854e587eb5f393fe491b6d7a9bdf6e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d – before a1a7eb89ca0b89dc1c326eeee2596f263291aca3
Linux Linux 5.5

Weakness: CWE-369 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References