CVE-2026-45684: CWE-126: Buffer Over-read in open-telemetry opentelemetry-ebpf-instrumentation
CVE-2026-45684 is a medium severity buffer over-read vulnerability in OpenTelemetry eBPF Instrumentation versions 0. 7. 0 up to but not including 0. 9. 0. The issue arises when the log enricher mishandles multi-segment writev buffers by reading only the first iovec entry but using the total iov_iter. count as the copy length. This can cause memory beyond the first segment to be read and overwritten when log injection is enabled. The vulnerability has been patched in version 0. 9.
AI Analysis
Technical Summary
OpenTelemetry eBPF Instrumentation (opentelemetry-ebpf-instrumentation) versions from 0.7.0 to before 0.9.0 contain a buffer over-read vulnerability (CWE-126) in the log enricher component. The flaw occurs because the code reads only the first iovec entry of a writev call but uses the total length from iov_iter.count for copying, leading to reading and overwriting memory beyond the intended buffer when log injection is enabled. This vulnerability was addressed and fixed in version 0.9.0.
Potential Impact
Successful exploitation can lead to reading and overwriting memory beyond the intended buffer boundaries, potentially causing information disclosure, data corruption, or application instability. The CVSS score of 4.9 reflects a medium severity with local attack vector, high attack complexity, no privileges required, and impacts on confidentiality, integrity, and availability at a low level. There are no known exploits in the wild.
Mitigation Recommendations
Upgrade to OpenTelemetry eBPF Instrumentation version 0.9.0 or later, where this vulnerability has been patched. No other mitigation or temporary workaround is indicated in the available data.
CVE-2026-45684: CWE-126: Buffer Over-read in open-telemetry opentelemetry-ebpf-instrumentation
Description
CVE-2026-45684 is a medium severity buffer over-read vulnerability in OpenTelemetry eBPF Instrumentation versions 0. 7. 0 up to but not including 0. 9. 0. The issue arises when the log enricher mishandles multi-segment writev buffers by reading only the first iovec entry but using the total iov_iter. count as the copy length. This can cause memory beyond the first segment to be read and overwritten when log injection is enabled. The vulnerability has been patched in version 0. 9.
CVSS v3.1
Score 4.9medium
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
OpenTelemetry eBPF Instrumentation (opentelemetry-ebpf-instrumentation) versions from 0.7.0 to before 0.9.0 contain a buffer over-read vulnerability (CWE-126) in the log enricher component. The flaw occurs because the code reads only the first iovec entry of a writev call but uses the total length from iov_iter.count for copying, leading to reading and overwriting memory beyond the intended buffer when log injection is enabled. This vulnerability was addressed and fixed in version 0.9.0.
Potential Impact
Successful exploitation can lead to reading and overwriting memory beyond the intended buffer boundaries, potentially causing information disclosure, data corruption, or application instability. The CVSS score of 4.9 reflects a medium severity with local attack vector, high attack complexity, no privileges required, and impacts on confidentiality, integrity, and availability at a low level. There are no known exploits in the wild.
Mitigation Recommendations
Upgrade to OpenTelemetry eBPF Instrumentation version 0.9.0 or later, where this vulnerability has been patched. No other mitigation or temporary workaround is indicated in the available data.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-12T21:59:25.667Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a1efb6ae29bf47b50db3b44
Added to database: 6/2/2026, 3:48:58 PM
Last enriched: 6/2/2026, 4:04:31 PM
Last updated: 6/2/2026, 4:58:31 PM
Views: 3
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