open-telemetry opentelemetry-ebpf-instrumentation up to 0.8.x Postgres Protocol Parser buffer overflow

Summaryinfo

A vulnerability marked as critical has been reported in open-telemetry opentelemetry-ebpf-instrumentation up to 0.8.x. This issue affects some unknown processing of the component Postgres Protocol Parser. This manipulation causes buffer overflow. This vulnerability is tracked as CVE-2026-45678. The attack is possible to be carried out remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in open-telemetry opentelemetry-ebpf-instrumentation up to 0.8.x and classified as critical. Affected by this vulnerability is an unknown code of the component Postgres Protocol Parser. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect availability. The summary by CVE is:

OpenTelemetry eBPF Instrumentation provides eBPF instrumentation based on the OpenTelemetry standard. Prior to version 0.9.0, the Postgres protocol parser assumes BIND message payloads contain a valid NUL-terminated portal name. A crafted empty or unterminated payload can make OBI slice beyond the end of the captured buffer and panic. This issue has been patched in version 0.9.0.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-45678 since 05/12/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 326329 (SUSE SLED15 / SLES15 Security Update : alloy (SUSE-SU-2026:2824-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 0.9.0 eliminates this vulnerability. The upgrade is hosted for download at github.com.

The vulnerability is also documented in the vulnerability database at Tenable (326329). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• open-telemetry

Name

• opentelemetry-ebpf-instrumentation

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8

Website

• Product: https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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