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CVE-2026-45681

OpenTelemetry eBPF Instrumentation provides eBPF instrumentation based on the OpenTelemetry standard. Prior to version 0.9.0, the per-CPU message-buffer fallback path uses a 256-byte backup buffer but preserves the original payload size, which can be up to 8KB. If a CPU mismatch occurs, OBI can read beyond the fallback buffer and leak adjacent memory into telemetry. This issue has been patched in version 0.9.0.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:5b844db93f385e27fb99089b670da411a050563b07af79fd05218d3e61b626ca
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-125","description":"CWE-125: Out-of-bounds Read","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:6ae9c364dfc7d387a624fddc000d88a0d31fbae50affd0d4803e634154ad167b · sha256:e11796d131510c98… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-130","description":"CWE-130: Improper Handling of Length Parameter Inconsistency","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:6ae9c364dfc7d387a624fddc000d88a0d31fbae50affd0d4803e634154ad167b · sha256:e11796d131510c98… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"opentelemetry-ebpf-instrumentation","vendor":"open-telemetry","versions":[{"status":"affected","version":"< 0.9.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:6ae9c364dfc7d387a624fddc000d88a0d31fbae50affd0d4803e634154ad167b · sha256:e11796d131510c98… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.9,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:6ae9c364dfc7d387a624fddc000d88a0d31fbae50affd0d4803e634154ad167b · sha256:e11796d131510c98… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-125","description":"CWE-125: Out-of-bounds Read","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:6ae9c364dfc7d387a624fddc000d88a0d31fbae50affd0d4803e634154ad167b · sha256:e11796d131510c98… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-130","description":"CWE-130: Improper Handling of Length Parameter Inconsistency","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:6ae9c364dfc7d387a624fddc000d88a0d31fbae50affd0d4803e634154ad167b · sha256:e11796d131510c98… · /containers/cna/problemTypes/1/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/releases/tag/v0.9.0","tags":["x_refsource_MISC"],"url":"https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/releases/tag/v0.9.0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6ae9c364dfc7d387a624fddc000d88a0d31fbae50affd0d4803e634154ad167b · sha256:e11796d131510c98… · /containers/cna/references/1
{"name":"https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-r6c9-g6q5-qrf9","tags":["x_refsource_CONFIRM"],"url":"https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-r6c9-g6q5-qrf9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6ae9c364dfc7d387a624fddc000d88a0d31fbae50affd0d4803e634154ad167b · sha256:e11796d131510c98… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-r6c9-g6q5-qrf9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6ae9c364dfc7d387a624fddc000d88a0d31fbae50affd0d4803e634154ad167b · sha256:e11796d131510c98… · /containers/adp/0/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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