CVE-2026-45684
Medium
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.
SeverityMedium
CVSS4.9
Exploit probability—
Product
Opentelemetry Ebpf Instrumentation
PublishedJun 2, 2026
First seenJun 2, 2026
Weakness typeCWE-126CWE-126CWE-787Out-of-bounds write
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 | 0.7.0 ≤ v < 0.9.0 | 0.9.0 |
| go.opentelemetry.io/obiGo | 0.7.0 ≤ v < 0.9.0 | 0.9.0 |
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