CVE-2026-45681
Medium
Description
OpenTelemetry eBPF Instrumentation provides eBPF instrumentation based on the OpenTelemetry standard. Prior to version 0.9.0, the per-CPU message-buffer fallback path uses a 256-byte backup buffer but preserves the original payload size, which can be up to 8KB. If a CPU mismatch occurs, OBI can read beyond the fallback buffer and leak adjacent memory into telemetry. This issue has been patched in version 0.9.0.
SeverityMedium
CVSS5.9
Exploit probability—
Product
Opentelemetry Ebpf Instrumentation
PublishedJun 2, 2026
First seenJun 2, 2026
Weakness typeCWE-125Out-of-bounds readCWE-130CWE-130
How to fix
Update
- opentelemetry ebpf_instrumentation0.9.0 or later
- go.opentelemetry.io/obi0.9.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| opentelemetry ebpf_instrumentation | v < 0.9.0 | 0.9.0 |
| go.opentelemetry.io/obiGo | v < 0.9.0 | 0.9.0 |
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