CVE-2026-45684 | THREATINT

Description

OpenTelemetry eBPF Instrumentation provides eBPF instrumentation based on the OpenTelemetry standard. From version 0.7.0 to before version 0.9.0, OBI's log enricher mishandles writev buffers by reading only the first iovec entry but using the total iov_iter.count as the copy length. When log injection is enabled, a crafted multi-segment writev call can make OBI read and overwrite memory beyond the first segment. This issue has been patched in version 0.9.0.

PUBLISHED Reserved 2026-05-12 | Published 2026-06-02 | Updated 2026-06-02 | Assigner GitHub_M

MEDIUM: 4.9CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Problem types

CWE-126: Buffer Over-read

CWE-787: Out-of-bounds Write

Product status

>= 0.7.0, < 0.9.0

affected

References

github.com/...tation/security/advisories/GHSA-vvmg-8mjr-g6q3 exploit

github.com/...tation/security/advisories/GHSA-vvmg-8mjr-g6q3

github.com/...metry-ebpf-instrumentation/releases/tag/v0.9.0

cve.org (CVE-2026-45684)

nvd.nist.gov (CVE-2026-45684)

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