GHSA-vvmg-8mjr-g6q3: OpenTelemetry eBPF Instrumentation: Log enricher writev path can overread and overwrite user buffers

OpenTelemetry eBPF Instrumentation (OBI) has a memory safety bug in its log enricher that mishandles writev calls (a system call that writes multiple buffer segments at once). When log injection is enabled, the code reads only the first buffer segment but copies as many bytes as all segments combined, causing it to read and overwrite memory beyond what it should access. This can corrupt application buffers, leak sensitive data into logs, or crash the instrumented process.