CVE-2026-31457

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A NULL pointer dereference occurs in the Linux kernel when damon sysfs repeat call fn() calls damon sysfs upd tuned intervals(), damon sysfs upd schemes stats(), and damon sysfs upd schemes effective quotas() without verifying the contexts->nr value. If the nr contexts variable is set to 0 via sysfs while DAMON is active, the system attempts to dereference contexts arr[0], leading to a crash.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.