CVE-2021-45940: Out-of-bounds Write

January 1, 2022 (updated January 11, 2022)

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

References

bugs.chromium.org/p/oss-fuzz/issues/detail?id=40868
github.com/google/oss-fuzz-vulns/blob/main/vulns/libbpf/OSV-2021-1562.yaml
nvd.nist.gov/vuln/detail/CVE-2021-45940

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