What’s Vulnerable › Vulnerabilities

CVE-2026-45683: OpenTelemetry eBPF Instrumentation: Java TLS ioctl kprobe allows kernel memory disclosure

• Severity: low (CVSS 3.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-06-02 · updated 2026-07-22
• Weakness: CWE-127

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.

Affected products

• open-telemetry opentelemetry-ebpf-instrumentation: before 0.9.0 — fixed in 0.9.0

How to fix

Upgrade to a fixed version: open-telemetry opentelemetry-ebpf-instrumentation 0.9.0. Check the vendor advisory for mitigations.

References

• https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/releases/tag/v0.9.0
• https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-fjq3-ffvr-vm46
• https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-fjq3-ffvr-vm46

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