What’s Vulnerable › Vulnerabilities

CVE-2021-45940

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-01-01 · updated 2026-06-17
• Weakness: CWE-787

Description

libbpf 0.6.0 and 0.6.1 has a heap-based buffer overflow (4 bytes) in __bpf_object__open (called from bpf_object__open_mem and bpf-object-fuzzer.c).

Affected products

• Libbpf Project Libbpf: 0.6.0, 0.6.1

References

• https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=40868
• https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libbpf/OSV-2021-1562.yaml
• https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=40868
• https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libbpf/OSV-2021-1562.yaml

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