CVE-2026-45686: CWE-190: Integer Overflow or Wraparound in open-telemetry opentelemetry-ebpf-instrumentation
OpenTelemetry eBPF Instrumentation provides eBPF instrumentation based on the OpenTelemetry standard. From version 0.7.0 to before version 0.9.0, a remotely reachable integer overflow in OBI's memcached text protocol parser can crash the OBI process and cause denial of service. When parsing memcached storage commands such as set, add, replace, append, prepend, or cas, OBI accepts extremely large <bytes> values and adds the payload delimiter length without checking for overflow. A crafted request with <bytes> set to math.MaxInt or math.MaxInt-1 causes the computed payload length to wrap negative and triggers a runtime panic in LargeBufferReader.Peek. This issue has been patched in version 0.9.0.
AI Analysis
Technical Summary
OpenTelemetry eBPF Instrumentation (OBI) versions >=0.7.0 and <0.9.0 have an integer overflow vulnerability (CWE-190) in the memcached text protocol parser. When parsing commands like set, add, replace, append, prepend, or cas, OBI accepts very large <bytes> values and adds the payload delimiter length without overflow checks. If <bytes> is set to math.MaxInt or math.MaxInt-1, the computed payload length wraps around to a negative value, causing a runtime panic in LargeBufferReader.Peek and crashing the OBI process, resulting in denial of service. This vulnerability has been patched in version 0.9.0.
Potential Impact
An unauthenticated remote attacker can exploit this integer overflow by sending crafted memcached storage commands with large <bytes> values, causing the OBI process to crash and resulting in denial of service. There is no impact on confidentiality or integrity reported.
Mitigation Recommendations
Upgrade to OpenTelemetry eBPF Instrumentation version 0.9.0 or later, where this integer overflow vulnerability has been fixed. Patch status is confirmed by the vendor advisory indicating the issue is resolved in 0.9.0.
CVE-2026-45686: CWE-190: Integer Overflow or Wraparound in open-telemetry opentelemetry-ebpf-instrumentation
Description
OpenTelemetry eBPF Instrumentation provides eBPF instrumentation based on the OpenTelemetry standard. From version 0.7.0 to before version 0.9.0, a remotely reachable integer overflow in OBI's memcached text protocol parser can crash the OBI process and cause denial of service. When parsing memcached storage commands such as set, add, replace, append, prepend, or cas, OBI accepts extremely large <bytes> values and adds the payload delimiter length without checking for overflow. A crafted request with <bytes> set to math.MaxInt or math.MaxInt-1 causes the computed payload length to wrap negative and triggers a runtime panic in LargeBufferReader.Peek. This issue has been patched in version 0.9.0.
CVSS v3.1
Score 7.5high
Affected software
pkg:github/open-telemetry/opentelemetry-ebpf-instrumentationRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
OpenTelemetry eBPF Instrumentation (OBI) versions >=0.7.0 and <0.9.0 have an integer overflow vulnerability (CWE-190) in the memcached text protocol parser. When parsing commands like set, add, replace, append, prepend, or cas, OBI accepts very large <bytes> values and adds the payload delimiter length without overflow checks. If <bytes> is set to math.MaxInt or math.MaxInt-1, the computed payload length wraps around to a negative value, causing a runtime panic in LargeBufferReader.Peek and crashing the OBI process, resulting in denial of service. This vulnerability has been patched in version 0.9.0.
Potential Impact
An unauthenticated remote attacker can exploit this integer overflow by sending crafted memcached storage commands with large <bytes> values, causing the OBI process to crash and resulting in denial of service. There is no impact on confidentiality or integrity reported.
Mitigation Recommendations
Upgrade to OpenTelemetry eBPF Instrumentation version 0.9.0 or later, where this integer overflow vulnerability has been fixed. Patch status is confirmed by the vendor advisory indicating the issue is resolved in 0.9.0.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-13T04:38:01.164Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a1efb6ae29bf47b50db3b4c
Added to database: 06/02/2026, 15:48:58 UTC
Last enriched: 06/10/2026, 11:16:41 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 45
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