Vulnerability Report: GO-2026-6354
- CVE-2026-78662
- Affects: golang.org/x/crypto
- Published: Sep 02, 2026
Previously, a channel registered in the mux's chanList is not usable until it is established. A malicious peer was able flood the channel's incomingRequests, deadlocking the entire connection. Now, we add an atomic established state, set when a channel becomes usable. Until such a time, handlePacket drops every packet other than the open confirmation/failure, without blocking and without tearing down the connection.
Affected Packages
-
PathVersionsSymbols
-
before v0.56.0
Aliases
References
- https://go.dev/issue/81316
- https://go.dev/cl/826504
- https://groups.google.com/g/golang-announce/c/1y3fb2np35U
- https://vuln.go.dev/ID/GO-2026-6354.json
Credits
- Will Mortensen
Feedback
See anything missing or incorrect?
Suggest an edit to this report.