Linux Kernel Vulnerability in DAMON_RECLAIM Scheme Overview

CVE-2025-39916

What is CVE-2025-39916?

A vulnerability exists in the Linux kernel related to the DAMON_RECLAIM scheme where a divide-by-zero error could occur. The error arises during the calculation of 'min_age_region' when 'aggr_interval' is set to zero, leading to potential instability and unexpected behavior. The issue is mitigated by returning an error code (-EINVAL) to handle this condition safely. System administrators and users are encouraged to apply the latest patches to ensure their systems remain secure and stable.

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