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.
Metrics
Affected Vendors & Products
References
History
Wed, 16 Jul 2025 13:45:00 +0000
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Sat, 10 May 2025 02:30:00 +0000
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threat_severity
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cvssV3_1
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Fri, 09 May 2025 07:00:00 +0000
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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. | |
Title | bpf: Fix deadlock between rcu_tasks_trace and event_mutex. | |
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Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2025-05-26T05:23:00.341Z
Reserved: 2025-04-16T04:51:23.962Z
Link: CVE-2025-37884

No data.

Status : Awaiting Analysis
Published: 2025-05-09T07:16:09.727
Modified: 2025-05-12T17:32:32.760
Link: CVE-2025-37884


No data.