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.

Project Subscriptions

Vendors Products
Opentelemetry Subscribe
Ebpf Instrumentation Subscribe
Opentelemetry-ebpf-instrumentation Subscribe
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-r6c9-g6q5-qrf9 OpenTelemetry eBPF Instrumentation: CPU-mismatch fallback uses 256-byte buffer with 8KB size
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 03 Jun 2026 17:00:00 +0000

Type Values Removed Values Added
First Time appeared Opentelemetry ebpf Instrumentation
CPEs cpe:2.3:a:opentelemetry:ebpf_instrumentation:*:*:*:*:*:go:*:*
Vendors & Products Opentelemetry ebpf Instrumentation

Tue, 02 Jun 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 02 Jun 2026 17:00:00 +0000

Type Values Removed Values Added
First Time appeared Opentelemetry
Opentelemetry opentelemetry-ebpf-instrumentation
Vendors & Products Opentelemetry
Opentelemetry opentelemetry-ebpf-instrumentation

Tue, 02 Jun 2026 15:45:00 +0000

Type Values Removed Values Added
Description 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.
Title OpenTelemetry eBPF Instrumentation: CPU-mismatch fallback uses 256-byte buffer with 8KB size
Weaknesses CWE-125
CWE-130
References
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N'}


Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-06-02T18:05:14.202Z

Reserved: 2026-05-12T21:59:25.667Z

Link: CVE-2026-45681

cve-icon Vulnrichment

Updated: 2026-06-02T18:05:02.972Z

cve-icon NVD

Status : Analyzed

Published: 2026-06-02T16:16:42.753

Modified: 2026-06-03T16:52:16.750

Link: CVE-2026-45681

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-02T17:15:18Z

Weaknesses