Vulnerability Description
OpenTelemetry eBPF Instrumentation provides eBPF instrumentation based on the OpenTelemetry standard. From version 0.7.0 to before version 0.9.0, OBI's log enricher mishandles writev buffers by reading only the first iovec entry but using the total iov_iter.count as the copy length. When log injection is enabled, a crafted multi-segment writev call can make OBI read and overwrite memory beyond the first segment. This issue has been patched in version 0.9.0.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Opentelemetry | Ebpf Instrumentation | >= 0.7.0, < 0.9.0 |
Related Weaknesses (CWE)
References
- https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/releases/taProductRelease Notes
- https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/adExploitVendor Advisory
- https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/adExploitVendor Advisory
FAQ
What is CVE-2026-45684?
CVE-2026-45684 is a vulnerability with a CVSS score of 4.9 (MEDIUM). OpenTelemetry eBPF Instrumentation provides eBPF instrumentation based on the OpenTelemetry standard. From version 0.7.0 to before version 0.9.0, OBI's log enricher mishandles writev buffers by readin...
How severe is CVE-2026-45684?
CVE-2026-45684 has been rated MEDIUM with a CVSS base score of 4.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-45684?
Check the references section above for vendor advisories and patch information. Affected products include: Opentelemetry Ebpf Instrumentation.