Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected a363d27cdbc2bc2d1899b5a1520b64e3590fcd9a before 45286680b385f2592db3003554872388dee66d68; affected a363d27cdbc2bc2d1899b5a1520b64e3590fcd9a before 4580f4e0ebdf8dc8d506ae926b88510395a0c1d1 |
| Linux / Linux | affected 6.13; unaffected 0 before 6.13; unaffected 6.14.5 through 6.14.*; unaffected 6.15 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/45286680b385f2592db3003554872388dee66d68
- https://git.kernel.org/stable/c/4580f4e0ebdf8dc8d506ae926b88510395a0c1d1
ADP enrichment
No English description supplied.