{"id":"CVE-2025-37884","state":"PUBLISHED","title":"bpf: Fix deadlock between rcu_tasks_trace and event_mutex.","description":"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      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.","publishedAt":"2025-05-09T06:45:47.462Z","updatedAt":"2026-05-11T21:16:58.574Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a363d27cdbc2bc2d1899b5a1520b64e3590fcd9a","status":"affected","lessThan":"45286680b385f2592db3003554872388dee66d68","versionType":"git"},{"version":"a363d27cdbc2bc2d1899b5a1520b64e3590fcd9a","status":"affected","lessThan":"4580f4e0ebdf8dc8d506ae926b88510395a0c1d1","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/trace/bpf_trace.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.13","versionType":"semver"},{"version":"6.14.5","status":"unaffected","lessThanOrEqual":"6.14.*","versionType":"semver"},{"version":"6.15","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/trace/bpf_trace.c"]}],"references":["https://git.kernel.org/stable/c/45286680b385f2592db3003554872388dee66d68","https://git.kernel.org/stable/c/4580f4e0ebdf8dc8d506ae926b88510395a0c1d1","https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:09:03.054Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/37xxx/CVE-2025-37884.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-37884","state":"PUBLISHED","datePublished":"2025-05-09T06:45:47.462Z","dateUpdated":"2026-05-11T21:16:58.574Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-04-16T04:51:23.962Z"},"containers":{"cna":{"title":"bpf: Fix deadlock between rcu_tasks_trace and event_mutex.","descriptions":[{"lang":"en","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(&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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a363d27cdbc2bc2d1899b5a1520b64e3590fcd9a","status":"affected","lessThan":"45286680b385f2592db3003554872388dee66d68","versionType":"git"},{"version":"a363d27cdbc2bc2d1899b5a1520b64e3590fcd9a","status":"affected","lessThan":"4580f4e0ebdf8dc8d506ae926b88510395a0c1d1","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/trace/bpf_trace.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.13","versionType":"semver"},{"version":"6.14.5","status":"unaffected","lessThanOrEqual":"6.14.*","versionType":"semver"},{"version":"6.15","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/trace/bpf_trace.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/45286680b385f2592db3003554872388dee66d68"},{"url":"https://git.kernel.org/stable/c/4580f4e0ebdf8dc8d506ae926b88510395a0c1d1"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T21:16:58.574Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.14.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.15"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2025-11-03T19:56:56.651Z"}}]}}}