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.
Published: 2026-06-02
Score: 5.9 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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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
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'}


Subscriptions

Opentelemetry Ebpf Instrumentation Opentelemetry-ebpf-instrumentation
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