| id: GO-2026-5016 |
| modules: |
| - module: golang.org/x/crypto |
| versions: |
| - fixed: 0.52.0 |
| vulnerable_at: 0.51.0 |
| packages: |
| - package: golang.org/x/crypto/ssh |
| symbols: |
| - channel.Reject |
| summary: Invoking memory leak when rejecting channels can lead to DoS in golang.org/x/crypto/ssh |
| description: | |
| 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. |
| credits: |
| - Ziyan Zhou |
| references: |
| - report: https://go.dev/issue/35127 |
| - fix: https://go.dev/cl/781320 |
| - web: https://groups.google.com/g/golang-announce/c/a082jnz-LvI |
| cve_metadata: |
| id: CVE-2026-39827 |
| cwe: 'CWE-401: Missing Release of Memory after Effective Lifetime' |
| source: |
| id: go-security-team |
| review_status: REVIEWED |
