CVE-2025-37884 (GCVE-0-2025-37884)

Vulnerability from cvelistv5 – Published: 2025-05-09 06:45 – Updated: 2026-01-02 15:29
VLAI?
Title
bpf: Fix deadlock between rcu_tasks_trace and event_mutex.
Summary
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: a363d27cdbc2bc2d1899b5a1520b64e3590fcd9a , < 45286680b385f2592db3003554872388dee66d68 (git)
Affected: a363d27cdbc2bc2d1899b5a1520b64e3590fcd9a , < 4580f4e0ebdf8dc8d506ae926b88510395a0c1d1 (git)
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    Linux Linux Affected: 6.13
Unaffected: 0 , < 6.13 (semver)
Unaffected: 6.14.5 , ≤ 6.14.* (semver)
Unaffected: 6.15 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix deadlock between rcu_tasks_trace and event_mutex.\n\nFix the following deadlock:\nCPU A\n_free_event()\n  perf_kprobe_destroy()\n    mutex_lock(\u0026event_mutex)\n      perf_trace_event_unreg()\n        synchronize_rcu_tasks_trace()\n\nThere are several paths where _free_event() grabs event_mutex\nand calls sync_rcu_tasks_trace. Above is one such case.\n\nCPU B\nbpf_prog_test_run_syscall()\n  rcu_read_lock_trace()\n    bpf_prog_run_pin_on_cpu()\n      bpf_prog_load()\n        bpf_tracing_func_proto()\n          trace_set_clr_event()\n            mutex_lock(\u0026event_mutex)\n\nDelegate trace_set_clr_event() to workqueue to avoid\nsuch lock dependency."
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    "datePublished": "2025-05-09T06:45:47.462Z",
    "dateReserved": "2025-04-16T04:51:23.962Z",
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