CVE-2026-39830

Name	CVE-2026-39830
Description	A malicious SSH peer could send unsolicited global request responses to fill an internal buffer, blocking the connection's read loop. The blocked goroutine could not be released by calling Close(), resulting in a resource leak per connection. Unsolicited global responses are now discarded.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1137516

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
golang-go.crypto (PTS)	bullseye	1:0.0~git20201221.eec23a3-1	vulnerable
	bookworm	1:0.4.0-1	vulnerable
	trixie	1:0.25.0-1	vulnerable
	forky, sid	1:0.52.0-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
golang-go.crypto	source	(unstable)	1:0.52.0-1			1137516

Notes

[bullseye] - golang-go.crypto <postponed> (Limited support, follow bookworm DSAs/point-releases)
https://www.openwall.com/lists/oss-security/2026/05/22/6
https://github.com/golang/go/issues/79564