OpenTelemetry eBPF Instrumentation: Java TLS ioctl kprobe allows kernel memory disclosure — GHSA-FJQ3-FFVR-VM46

Summary

### Summary The Java TLS ioctl probe reads user-controlled ioctl pointers with `bpf_probe_read` instead of `bpf_probe_read_user`. An instrumented local process can therefore point OBI at kernel memory and cause that memory to be copied into telemetry. ### Details The vulnerable path is in…

Timeline

Published by source

2026-05-18

Risk context

• Reported severity or threat level: low.
• Reported CVSS score: 3.8 out of 10.
• Reported EPSS value: 0.
• Review exposure for the affected product or family: go: go.opentelemetry.io/obi.

Product

go: go.opentelemetry.io/obi

What to do

General, cautious steps (verify details in the official source):

• Review exposure and plan remediation based on risk and environment.
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

• Read the official source
• CVE Record
• NVD

Evidence and provenance

Canonical advisory ID

GHSA-FJQ3-FFVR-VM46

Source

GitHub

Vendor

GitHub

Published by source

2026-05-18

Last source activity

2026-05-18

Additional identifiers

CVE-2026-45683

Curated by

hlukh.ch

Related advisories and connections

These advisories are connected by shared CVE, product, vendor, source, or time signals.