CVE-2026-45686
OpenTelemetry eBPF Instrumentation: Memcached payload length overflow can crash OBI
OpenTelemetry eBPF Instrumentation provides eBPF instrumentation based on the OpenTelemetry standard. From version 0.7.0 to before version 0.9.0, a remotely reachable integer overflow in OBI's memcached text protocol parser can crash the OBI process and cause denial of service. When parsing memcached storage commands such as set, add, replace, append, prepend, or cas, OBI accepts extremely large <bytes> values and adds the payload delimiter length without checking for overflow. A crafted request with <bytes> set to math.MaxInt or math.MaxInt-1 causes the computed payload length to wrap negative and triggers a runtime panic in LargeBufferReader.Peek. This issue has been patched in version 0.9.0.
- Affected
- open-telemetry · opentelemetry-ebpf-instrumentation
- CVSS v3.1 GITHUB
- 7.5 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS
- 0.52% chance of exploitation in the next 30 days, 43rd percentile
- Published
- 2026-06-02
- Updated
- 2026-06-03
Proof-of-concept exploits (1)
Security advisories
- open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-43g7-cwr8-q3jh
- open-telemetry/opentelemetry-ebpf-instrumentation/releases/tag/v0.9.0