OpenTelemetry eBPF Instrumentation: Memcached payload length overflow can crash OBI
Published Jun 2, 2026
7.5
HIGHCVSS 3.1
EPSS 0.52%
Description
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 products
-
- Version >= 0.7.0, < 0.9.0StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Open-Telemetry | Opentelemetry-Ebpf-Instrumentation | n/a |
|
- ≥ 0.7.0 · < 0.9.0
No data.
No Red Hat product state for this CVE.
go.opentelemetry.io/obi
Go
Introduced 0.7.0 Fixed 0.9.0
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| Go | go.opentelemetry.io/obi | 0.7.0 | 0.9.0 |
Remediation
No remediation recorded yet.
References (4)
- https://github.com/advisories/GHSA-43g7-cwr8-q3jh Advisory
- https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/releases/tag/v0.9.0 x_refsource_MISCProductRelease Notes
- https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-43g7-cwr8-q3jh exploitx_refsource_CONFIRMVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-45686
| Link | Providers | Tags |
|---|---|---|
| https://github.com/advisories/GHSA-43g7-cwr8-q3jh | Advisory | |
| https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/releases/tag/v0.9.0 | x_refsource_MISCProductRelease Notes | |
| https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-43g7-cwr8-q3jh | exploitx_refsource_CONFIRMVendor Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2026-45686 |
Change history (0)
No recorded changes yet.