GO-2026-6355

vendorUSosv

Prevent DoS on deadlocked established channel in golang.org/x/crypto/ssh

Advisory ansehen veröffentlicht 2026-09-02Lizenz: per source

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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beschreibt (1)

Zugehörige CVEs.

IDSchweregrad ausnutzbar
CVE-2026-56855US——
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 messag…
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Referenzen

Externe Belege — Patches, Meldungen, Analysen.

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