CVE-2026-45683— OpenTelemetry eBPF Instrumentation: Java TLS ioctl kprobe allows kernel memory disclosure
Quick assessment
Affected
open-telemetry opentelemetry-ebpf-instrumentation
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
OpenTelemetry eBPF Instrumentation是OpenTelemetry开源的一个基于eBPF的轻量级遥测数据采集工具。 OpenTelemetry eBPF Instrumentation 0.9.0之前版本存在安全漏洞，该漏洞源于Java TLS ioctl探针使用bpf_probe_read而非bpf_probe_read_user读取用户控制的ioctl指针，可能导致被检测的本地进程将OBI指向内核内存并复制到遥测。
Possible ATT&CK Techniques 1 AI
T1059 · Command and Scripting InterpreterAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| open-telemetry | opentelemetry-ebpf-instrumentation | < 0.9.0 |
affected |
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I. Basic Information for CVE-2026-45683
Vulnerability Information
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Vulnerability Title
OpenTelemetry eBPF Instrumentation: Java TLS ioctl kprobe allows kernel memory disclosure
Source: CVE Program / CVE List V5
Vulnerability Description
OpenTelemetry eBPF Instrumentation provides eBPF instrumentation based on the OpenTelemetry standard. Prior to version 0.9.0, the Java TLS ioctl probe reads user-controlled ioctl pointers with bpf_probe_read instead of bpf_probe_read_user. An instrumented local process can therefore point OBI at kernel memory and cause that memory to be copied into telemetry. This issue has been patched in version 0.9.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
缓冲区下溢读取
Source: CVE Program / CVE List V5
Vulnerability Title
OpenTelemetry eBPF Instrumentation 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenTelemetry eBPF Instrumentation是OpenTelemetry开源的一个基于eBPF的轻量级遥测数据采集工具。 OpenTelemetry eBPF Instrumentation 0.9.0之前版本存在安全漏洞，该漏洞源于Java TLS ioctl探针使用bpf_probe_read而非bpf_probe_read_user读取用户控制的ioctl指针，可能导致被检测的本地进程将OBI指向内核内存并复制到遥测。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| open-telemetry | opentelemetry-ebpf-instrumentation | < 0.9.0 | - |
|
II. Public POCs for CVE-2026-45683
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-45683 (1)
Vendor Pages for CVE-2026-45683 (1)
Same Patch Batch · open-telemetry · 2026-06-02 · 10 CVEs total
| CVE-2026-45685 | 7.5 HIGH | OpenTelemetry eBPF Instrumentation: MongoDB parser panics on malformed wire messages |
| CVE-2026-45686 | 7.5 HIGH | OpenTelemetry eBPF Instrumentation: Memcached payload length overflow can crash OBI |
| CVE-2026-45678 | 7.5 HIGH | OpenTelemetry eBPF Instrumentation: Postgres BIND parsing can panic on malformed payloads |
| CVE-2026-45679 | 6.5 MEDIUM | OpenTelemetry eBPF Instrumentation: Redis error text is exported in span status messages |
| CVE-2026-45681 | 5.9 MEDIUM | OpenTelemetry eBPF Instrumentation: CPU-mismatch fallback uses 256-byte buffer with 8KB si |
| CVE-2026-45680 | 5.9 MEDIUM | OpenTelemetry eBPF Instrumentation: Unbounded BPF internal metrics replay can exhaust CPU |
| CVE-2026-45676 | 5.5 MEDIUM | OpenTelemetry eBPF Instrumentation: Unsafe fastelf parsing allows malformed ELF to crash a |
| CVE-2026-45682 | 5.1 MEDIUM | OpenTelemetry eBPF Instrumentation: CappedConcurrentHashMap leaks keys after removals |
| CVE-2026-45684 | 4.9 MEDIUM | OpenTelemetry eBPF Instrumentation: Log enricher writev path can overread and overwrite us |
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V. Comments for CVE-2026-45683
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