An authenticated SSH client that repeatedly opened channels which were rejected by the server caused unbounded memory growth, eventually crashing the server process and affecting all connected users. Rejected channels are now properly removed from the connection's internal state and released for garbage collection.
Update golang.org/x/crypto to 0.52.0; golang.org/x/crypto/ssh to 0.52.0 if you use the affected versions. Test the change in a non-production environment first.
Local check
hol-guard supply-chain scangolang.org/x/crypto/ssh: Invoking memory leak when rejecting channels can lead to DoS affects golang.org/x/crypto (go), golang.org/x/crypto/ssh (go). Severity is medium. An authenticated SSH client that repeatedly opened channels which were rejected by the server caused unbounded memory growth, eventually crashing the server process and affecting all connected users. Rejected channels are now properly removed from the connection's internal state and released for garbage collection.
AI coding agents often install or upgrade packages automatically in go. A medium vulnerability in a dependency can be pulled into a project through a normal install or update without a human reviewing the change, expanding the blast radius from a single package to every agent workspace that depends on it.
| Package | Affected range | Fixed version |
|---|---|---|
| golang.org/x/cryptogo | <0.52.0 | 0.52.0 |
An authenticated SSH client that repeatedly opened channels which were rejected by the server caused unbounded memory growth, eventually crashing the server process and affecting all connected users. Rejected channels are now properly removed from the connection's internal state and released for garbage collection.
Update golang.org/x/crypto to 0.52.0; golang.org/x/crypto/ssh to 0.52.0 if you use the affected versions. Test the change in a non-production environment first.
Local check
hol-guard supply-chain scangolang.org/x/crypto/ssh: Invoking memory leak when rejecting channels can lead to DoS affects golang.org/x/crypto (go), golang.org/x/crypto/ssh (go). Severity is medium. An authenticated SSH client that repeatedly opened channels which were rejected by the server caused unbounded memory growth, eventually crashing the server process and affecting all connected users. Rejected channels are now properly removed from the connection's internal state and released for garbage collection.
AI coding agents often install or upgrade packages automatically in go. A medium vulnerability in a dependency can be pulled into a project through a normal install or update without a human reviewing the change, expanding the blast radius from a single package to every agent workspace that depends on it.
| Package | Affected range | Fixed version |
|---|---|---|
| golang.org/x/cryptogo | <0.52.0 | 0.52.0 |
| golang.org/x/crypto/sshgo |
|---|
| <0.52.0 |
| 0.52.0 |
Fixed versions are reported by the source feed; confirm compatibility before updating.
Reported by GitHub Security Advisories (ghsa).
HOL Guard can help your team review package activity against supported protection paths.
Explore HOL Guard| golang.org/x/crypto/sshgo |
|---|
| <0.52.0 |
| 0.52.0 |
Fixed versions are reported by the source feed; confirm compatibility before updating.
Reported by GitHub Security Advisories (ghsa).
HOL Guard can help your team review package activity against supported protection paths.
Explore HOL Guard