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GO-2026-6355
Prevent DoS on deadlocked established channel in golang.org/x/crypto/ssh
Quick fix
GO-2026-6355 — golang.org/x/crypto: upgrade to the fixed version with the command below.
go get golang.org/x/crypto@v0.56.0Details
Previously, after a channel has been established, a malicious peer could send crafted messages that would deadlock the entire connection.
Now, we handle all RFC 4254 channel messages; global requests are handled explicitly. Then, treat all other messages as a protocol error and tear the connection down instead of buffering and blocking.
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