CVE-2021-43668: NULL Pointer Dereference

November 18, 2021 (updated November 23, 2021)

Go-Ethereum nodes crash (denial of service) after receiving a serial of messages and cannot be recovered. They will crash with “runtime error: invalid memory address or nil pointer dereference” and arise a SEGV signal.

References

github.com/ethereum/go-ethereum/issues/23866
nvd.nist.gov/vuln/detail/CVE-2021-43668

Code Behaviors & Features

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