CVE-2026-45684 | BDVDB-2026-337355 Detail

open-telemetryopentelemetry-ebpf-instrumentation

Description#

OpenTelemetry eBPF Instrumentation provides eBPF instrumentation based on the OpenTelemetry standard. From version 0.7.0 to before version 0.9.0, OBI's log enricher mishandles writev buffers by reading only the first iovec entry but using the total iov_iter.count as the copy length. When log injection is enabled, a crafted multi-segment writev call can make OBI read and overwrite memory beyond the first segment. This issue has been patched in version 0.9.0.

Impact#

Per CVSS v3.1: confidentiality impact low, integrity impact low, availability impact low. Attack vector: local.

Weaknesses#

CWE-126 Buffer Over-read
CWE-787 Out-of-bounds Write

References#

Exploit#

No public exploit known

History#

Version 12026-06-02Record published in the CVE List.

Published

Published: 2026-06-02
Last modified: 2026-06-02

Vendor information

Vendor: open-telemetry
Product: opentelemetry-ebpf-instrumentation

All open-telemetry vulnerabilities

Score

4.9 Medium

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 6.6.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Memory Corruption

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>= 0.7.0, < 0.9.0
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

4.9 Medium

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Metric breakdown
Attack Vector	Local
Attack Complexity	High
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	Low
Integrity	Low
Availability	Low

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).