Riskcovery

CVE-2025-37884

bpf: Fix deadlock between rcu_tasks_trace and event_mutex.

State
Published
Severity
Not scored
Published
May 9, 2025
Updated
May 11, 2026
Reserved
Apr 16, 2025

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

bpf: Fix deadlock between rcu_tasks_trace and event_mutex.

Fix the following deadlock: CPU A _free_event() perf_kprobe_destroy() mutex_lock(&event_mutex) perf_trace_event_unreg() synchronize_rcu_tasks_trace()

There are several paths where _free_event() grabs event_mutex and calls sync_rcu_tasks_trace. Above is one such case.

CPU B bpf_prog_test_run_syscall() rcu_read_lock_trace() bpf_prog_run_pin_on_cpu() bpf_prog_load() bpf_tracing_func_proto() trace_set_clr_event() mutex_lock(&event_mutex)

Delegate trace_set_clr_event() to workqueue to avoid such lock dependency.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • a363d27cdbc2bc2d1899b5a1520b64e3590fcd9a to before 45286680b385f2592db3003554872388dee66d68Affected
  • a363d27cdbc2bc2d1899b5a1520b64e3590fcd9a to before 4580f4e0ebdf8dc8d506ae926b88510395a0c1d1Affected
LinuxLinux
  • 6.13Affected
  • before 6.13Not affected
  • 6.14.5 through 6.14.*Not affected
  • 6.15 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.