{"dataType": "CVE_RECORD", "dataVersion": "5.1", "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": "2025-05-04T08:44:52.825Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T08:44:52.825Z"}, "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": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "2e5399879024fedd6cdc41f73fbf9bbe7208f899", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "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": "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:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.0.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "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"}}}}

{}

{"cveTags": [], "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"}], "id": "CVE-2022-49764", "lastModified": "2025-05-02T13:53:20.943", "metrics": {}, "published": "2025-05-01T15:15:59.170", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/05b24ff9b2cfabfcfd951daaa915a036ab53c9e1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2e5399879024fedd6cdc41f73fbf9bbe7208f899"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: bpf: Prevent bpf program recursion for raw tracepoint probes", "id": "2363365", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2363365"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbpf: Prevent bpf program recursion for raw tracepoint probes\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.\nCall Trace:\n<TASK>\n? trace_event_raw_event_bpf_trace_printk+0x5f/0x90\nbpf_trace_printk+0x2b/0xe0\nbpf_prog_a9aec6167c091eef_prog+0x1f/0x24\nbpf_trace_run2+0x26/0x90\nnative_queued_spin_lock_slowpath+0x1c6/0x2b0\n_raw_spin_lock_irqsave+0x44/0x50\nbpf_trace_printk+0x3f/0xe0\nbpf_prog_a9aec6167c091eef_prog+0x1f/0x24\nbpf_trace_run2+0x26/0x90\nnative_queued_spin_lock_slowpath+0x1c6/0x2b0\n_raw_spin_lock_irqsave+0x44/0x50\nbpf_trace_printk+0x3f/0xe0\nbpf_prog_a9aec6167c091eef_prog+0x1f/0x24\nbpf_trace_run2+0x26/0x90\nnative_queued_spin_lock_slowpath+0x1c6/0x2b0\n_raw_spin_lock_irqsave+0x44/0x50\nbpf_trace_printk+0x3f/0xe0\nbpf_prog_a9aec6167c091eef_prog+0x1f/0x24\nbpf_trace_run2+0x26/0x90\nnative_queued_spin_lock_slowpath+0x1c6/0x2b0\n_raw_spin_lock_irqsave+0x44/0x50\n__unfreeze_partials+0x5b/0x160\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.\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.\nMoving bpf_prog_inc_misses_counter to syscall.c because\ntrampoline.c is compiled in just for CONFIG_BPF_JIT option.\n[1] https://lore.kernel.org/bpf/YxhFe3EwqchC%2FfYf@krava/T/#t"], "name": "CVE-2022-49764", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-05-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-49764\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49764\nhttps://lore.kernel.org/linux-cve-announce/2025050113-CVE-2022-49764-5947@gregkh/T"], "statement": "A logic flaw in BPF raw tracepoint handling allowed recursive execution of the same BPF program via bpf_trace_printk(), leading to stack overflows or system lockups. The issue required a privileged user to attach a BPF program to certain tracepoints and was mitigated by checking the program's active status. Although not exploitable for privilege escalation, it could be used to degrade system availability through kernel-level denial of service. For the Red Hat Enterprise Linux the BPF disabled by default (and only admin user can enable it).", "threat_severity": "Moderate"}