Description
OpenTelemetry eBPF Instrumentation provides eBPF instrumentation based on the OpenTelemetry standard. Prior to version 0.9.0, OBI's replacement ELF parser trusts section offsets, counts, and string offsets from the executable file. A crafted local ELF can make OBI dereference invalid section pointers or slice past string tables, causing the agent to panic while determining the process language. This issue has been patched in version 0.9.0.
Published: 2026-06-02
Score: 5.5 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

The vulnerability resides in OBI’s fast ELF parser, which unconditionally trusts section offsets, counts, and string offsets supplied by an ELF file. A specially crafted local ELF can cause the agent to dereference invalid pointers or read past string tables when determining the process language, ultimately provoking a panic and crashing the service. This weakness is a classic example of Improper Validation of Resource Parameters (CWE-20) and Improper Calculation of Buffer Size (CWE-248). The immediate impact is that the agent stops functioning, leading to a denial‑of‑service condition for telemetry collection on the affected host.

Affected Systems

The affected product is OpenTelemetry eBPF Instrumentation from the open‑telemetry organization. Every release prior to version 0.9.0 is susceptible; the issue is fixed in v0.9.0 and later. No other vendors or products are listed as affected.

Risk and Exploitability

The CVSS score of 5.5 indicates medium severity. EPSS data is not available, and the vulnerability is not listed in the CISA KEV catalog, suggesting no actively exploited variants are known. The attack vector can be inferred to be local, as a malicious user must supply a crafted ELF file to the agent; no remote exploitation method is described. Consequently, the risk is moderate for environments where untrusted ELF files may be processed by the agent.

Generated by OpenCVE AI on June 2, 2026 at 16:24 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade OpenTelemetry eBPF Instrumentation to version 0.9.0 or later.
  • Restore or verify the integrity of any custom ELF files used by the agent to ensure they are not malformed.
  • If upgrading is delayed, restrict agent execution to a privileged user with limited access to local files and monitor for abnormal crashes.

Generated by OpenCVE AI on June 2, 2026 at 16:24 UTC.

Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-wp73-mwgf-4jq9 OpenTelemetry eBPF Instrumentation: Unsafe fastelf parsing allows malformed ELF to crash agent
History

Tue, 02 Jun 2026 16:45:00 +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, OBI's replacement ELF parser trusts section offsets, counts, and string offsets from the executable file. A crafted local ELF can make OBI dereference invalid section pointers or slice past string tables, causing the agent to panic while determining the process language. This issue has been patched in version 0.9.0.
Title OpenTelemetry eBPF Instrumentation: Unsafe fastelf parsing allows malformed ELF to crash agent
Weaknesses CWE-20
CWE-248
References
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}


Subscriptions

Opentelemetry Opentelemetry-ebpf-instrumentation
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-06-02T15:23:50.406Z

Reserved: 2026-05-12T21:59:25.666Z

Link: CVE-2026-45676

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Undergoing Analysis

Published: 2026-06-02T16:16:42.127

Modified: 2026-06-02T17:14:05.363

Link: CVE-2026-45676

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-02T16:30:13Z

Weaknesses