CVEvulnerability
CVE-2025-37884
5.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2025-05-09
- Last modified
- 2026-06-17
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 ([email protected])
- 5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-667
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.
Affected configurations
• linux linux kernel (< 6.1.136)
• linux linux kernel (>= 6.2 < 6.6.89)
• linux linux kernel (>= 6.7 < 6.12.26)
• linux linux kernel (>= 6.13 < 6.14.5)
• debian debian linux 11.0
Related
Weakness · CWE (1)
- CWE-667 Improper Locking weakness