CVE-2026-45684
OpenTelemetry eBPF Instrumentation: Log enricher writev path can overread and overwrite user buffers
MEDIUM 5.3EPSS 0.2%
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.
- Affected
- open-telemetry · opentelemetry-ebpf-instrumentation
- CVSS v3.1 NVD
- 5.3 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L - CVSS v3.1 GITHUB
- 4.9 MEDIUM
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L - EPSS
- 0.17% chance of exploitation in the next 30 days, 6th percentile
- Published
- 2026-06-02
Proof-of-concept exploits (1)
Security advisories
- open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-vvmg-8mjr-g6q3
- open-telemetry/opentelemetry-ebpf-instrumentation/releases/tag/v0.9.0