{"id":"CVE-2025-37884","title":"bpf: Fix deadlock between rcu_tasks_trace and event_mutex.","summary":"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(&event_mutex)\n      p…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= a363d27cdbc2bc2d1899b5a1520b64e3590fcd9a < 45286680b385f2592db3003554872388dee66d68","Linux >= a363d27cdbc2bc2d1899b5a1520b64e3590fcd9a < 4580f4e0ebdf8dc8d506ae926b88510395a0c1d1","Linux 6.13"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-05T20:44:31.694986Z"},"published":"2025-05-09","updated":"2026-11-05","sourceUpdated":"2026-11-05T20:52:06.886Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-37884","references":[{"url":"https://git.kernel.org/stable/c/45286680b385f2592db3003554872388dee66d68"},{"url":"https://git.kernel.org/stable/c/4580f4e0ebdf8dc8d506ae926b88510395a0c1d1"}],"tags":["cve.org"],"epss":0.00213,"epssPercentile":0.11636,"ingestedAt":"2026-11-05T22:38:31.889Z","slug":"CVE-2025-37884","body":"## Overview\n\nIn 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(&event_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(&event_mutex)\n\nDelegate trace_set_clr_event() to workqueue to avoid\nsuch lock dependency.\n\n## Affected\n\n- `Linux >= a363d27cdbc2bc2d1899b5a1520b64e3590fcd9a < 45286680b385f2592db3003554872388dee66d68`\n- `Linux >= a363d27cdbc2bc2d1899b5a1520b64e3590fcd9a < 4580f4e0ebdf8dc8d506ae926b88510395a0c1d1`\n- `Linux 6.13`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}