CVE-2026-46272

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

Description A race condition exists in the Coresight TMC-ETR component of the Linux kernel when sysfs and perf modes are operated simultaneously. The issue occurs because the enablement of sysfs mode is split into two separate critical regions: one for buffer allocation and another for hardware enablement. This separation allows a race with perf mode, which can trigger a WARN ON() in the tmc etr enable hw() function when the etr buf variable is already initialized by the perf side.

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