SB20260816523 - Division by zero in Linux kernel cgroup

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Main Vulnerability Database SB20260816523

SB20260816523 - Division by zero in Linux kernel cgroup

Published: August 16, 2026

Security Bulletin ID SB20260816523
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Division by zero (CVE-ID: CVE-2026-72010)

CWE-ID: CWE-369 - Divide By Zero

CVSSv4: 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]


The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to division by zero in mpol_relative_nodemask in the cpuset mempolicy rebind path when handling a CPU hotplug event for a task in a child cpuset with an unset cpuset.mems and a VMA mempolicy using MPOL_F_RELATIVE_NODES. A local user can create such a cpuset configuration and trigger CPU hotplug handling to cause a denial of service.

Exploitation requires a child cpuset where cpuset.mems is not set and a VMA mempolicy configured with MPOL_F_RELATIVE_NODES.


Remediation

Install update from vendor's website.

References