Vulnerability Details CVE-2026-45681
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 9.3%
CVSS Severity
CVSS v3 Score 5.9
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-r6c9-g6q5-qrf9
- https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-r6c9-g6q5-qrf9