{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49764","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-04-16T07:17:33.804Z","datePublished":"2025-05-01T14:09:04.252Z","dateUpdated":"2026-05-11T19:06:19.784Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T19:06:19.784Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Prevent bpf program recursion for raw tracepoint probes\n\nWe got report from sysbot [1] about warnings that were caused by\nbpf program attached to contention_begin raw tracepoint triggering\nthe same tracepoint by using bpf_trace_printk helper that takes\ntrace_printk_lock lock.\n\n Call Trace:\n  <TASK>\n  ? trace_event_raw_event_bpf_trace_printk+0x5f/0x90\n  bpf_trace_printk+0x2b/0xe0\n  bpf_prog_a9aec6167c091eef_prog+0x1f/0x24\n  bpf_trace_run2+0x26/0x90\n  native_queued_spin_lock_slowpath+0x1c6/0x2b0\n  _raw_spin_lock_irqsave+0x44/0x50\n  bpf_trace_printk+0x3f/0xe0\n  bpf_prog_a9aec6167c091eef_prog+0x1f/0x24\n  bpf_trace_run2+0x26/0x90\n  native_queued_spin_lock_slowpath+0x1c6/0x2b0\n  _raw_spin_lock_irqsave+0x44/0x50\n  bpf_trace_printk+0x3f/0xe0\n  bpf_prog_a9aec6167c091eef_prog+0x1f/0x24\n  bpf_trace_run2+0x26/0x90\n  native_queued_spin_lock_slowpath+0x1c6/0x2b0\n  _raw_spin_lock_irqsave+0x44/0x50\n  bpf_trace_printk+0x3f/0xe0\n  bpf_prog_a9aec6167c091eef_prog+0x1f/0x24\n  bpf_trace_run2+0x26/0x90\n  native_queued_spin_lock_slowpath+0x1c6/0x2b0\n  _raw_spin_lock_irqsave+0x44/0x50\n  __unfreeze_partials+0x5b/0x160\n  ...\n\nThe can be reproduced by attaching bpf program as raw tracepoint on\ncontention_begin tracepoint. The bpf prog calls bpf_trace_printk\nhelper. Then by running perf bench the spin lock code is forced to\ntake slow path and call contention_begin tracepoint.\n\nFixing this by skipping execution of the bpf program if it's\nalready running, Using bpf prog 'active' field, which is being\ncurrently used by trampoline programs for the same reason.\n\nMoving bpf_prog_inc_misses_counter to syscall.c because\ntrampoline.c is compiled in just for CONFIG_BPF_JIT option.\n\n[1] https://lore.kernel.org/bpf/YxhFe3EwqchC%2FfYf@krava/T/#t"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["include/linux/bpf.h","kernel/bpf/syscall.c","kernel/bpf/trampoline.c","kernel/trace/bpf_trace.c"],"versions":[{"version":"c4f6699dfcb8558d138fe838f741b2c10f416cf9","lessThan":"2e5399879024fedd6cdc41f73fbf9bbe7208f899","status":"affected","versionType":"git"},{"version":"c4f6699dfcb8558d138fe838f741b2c10f416cf9","lessThan":"05b24ff9b2cfabfcfd951daaa915a036ab53c9e1","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["include/linux/bpf.h","kernel/bpf/syscall.c","kernel/bpf/trampoline.c","kernel/trace/bpf_trace.c"],"versions":[{"version":"4.17","status":"affected"},{"version":"0","lessThan":"4.17","status":"unaffected","versionType":"semver"},{"version":"6.0.10","lessThanOrEqual":"6.0.*","status":"unaffected","versionType":"semver"},{"version":"6.1","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.17","versionEndExcluding":"6.0.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.17","versionEndExcluding":"6.1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/2e5399879024fedd6cdc41f73fbf9bbe7208f899"},{"url":"https://git.kernel.org/stable/c/05b24ff9b2cfabfcfd951daaa915a036ab53c9e1"}],"title":"bpf: Prevent bpf program recursion for raw tracepoint probes","x_generator":{"engine":"bippy-1.2.0"}}}}