CVE-2021-47006

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

Description A vulnerability has been resolved in the Linux kernel. The issue is related to the hw breakpoint feature, where the overflow handler hook is not properly checked. A commit set a default event->overflow handler in perf event alloc(), but one check is missing, resulting in bp->overflow handler never being NULL. As a consequence, enable single step() is always not invoked. The vulnerability is related to the perf/core component and the is default overflow handler() function.

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