AIKIDO-2026-563172
erlang is vulnerable to Race Condition (TOCTOU)
87
High Risk
This Affects:
erlangTL;DR
Affected versions of Erlang/OTP contain a race condition in the shared DTLS packet demultiplexer that allows a remote attacker to crash the process by sending rapid ClientHello messages from the same source address and port. Because the demultiplexer is shared across all DTLS sessions on a listener, a successful attack terminates all active connections, resulting in a pre-authentication denial-of-service (DoS).
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range.
Background info
erlang is vulnerable to Race Condition (TOCTOU) in versions 25.3.0 - 27.3.4.13, 28.0.0 - 28.5.0.2 and 29.0.0 - 29.0.2.
How to fix this
Upgrade the erlang library to the patch version.
Links
GitHub Release
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