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CVE-2026-45681— OpenTelemetry eBPF Instrumentation: CPU-mismatch fallback uses 256-byte buffer with 8KB size

CVSS 5.9 · Medium

Possible ATT&CK Techniques 1AI

T1039 · Data from Network Shared Drive

Affected Version Matrix 1

VendorProductVersion RangeStatus
open-telemetryopentelemetry-ebpf-instrumentation< 0.9.0affected
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I. Basic Information for CVE-2026-45681

Vulnerability Information
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Vulnerability Title
OpenTelemetry eBPF Instrumentation: CPU-mismatch fallback uses 256-byte buffer with 8KB size
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存读
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
open-telemetryopentelemetry-ebpf-instrumentation < 0.9.0 -

II. Public POCs for CVE-2026-45681

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III. Intelligence Information for CVE-2026-45681

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Vendor Advisories for CVE-2026-45681 (1)

Vendor Pages for CVE-2026-45681 (1)

Same Patch Batch · open-telemetry · 2026-06-02 · 10 CVEs total

CVE-2026-456857.5 HIGHOpenTelemetry eBPF Instrumentation: MongoDB parser panics on malformed wire messages
CVE-2026-456867.5 HIGHOpenTelemetry eBPF Instrumentation: Memcached payload length overflow can crash OBI
CVE-2026-456787.5 HIGHOpenTelemetry eBPF Instrumentation: Postgres BIND parsing can panic on malformed payloads
CVE-2026-456796.5 MEDIUMOpenTelemetry eBPF Instrumentation: Redis error text is exported in span status messages
CVE-2026-456805.9 MEDIUMOpenTelemetry eBPF Instrumentation: Unbounded BPF internal metrics replay can exhaust CPU
CVE-2026-456765.5 MEDIUMOpenTelemetry eBPF Instrumentation: Unsafe fastelf parsing allows malformed ELF to crash a
CVE-2026-456825.1 MEDIUMOpenTelemetry eBPF Instrumentation: CappedConcurrentHashMap leaks keys after removals
CVE-2026-456844.9 MEDIUMOpenTelemetry eBPF Instrumentation: Log enricher writev path can overread and overwrite us
CVE-2026-456833.8 LOWOpenTelemetry eBPF Instrumentation: Java TLS ioctl kprobe allows kernel memory disclosure

IV. Related Vulnerabilities

Same product: opentelemetry-ebpf-instrumentation
Same vendor: open-telemetry
Same weakness: CWE-125

V. Comments for CVE-2026-45681

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