CVE-2026-39827
Public on 2026-05-22
Modified on 2026-05-22
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.
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 2 - Core | amazon-cloudwatch-agent | Pending Fix | ||
| Amazon Linux 2023 | amazon-cloudwatch-agent | Pending Fix | ||
| Amazon Linux 2 - Core | amazon-ssm-agent | Pending Fix | ||
| Amazon Linux 2023 | amazon-ssm-agent | Pending Fix | ||
| Amazon Linux 2 - Aws-nitro-enclaves-cli Extra | containerd | Pending Fix | ||
| Amazon Linux 2 - Docker Extra | containerd | Pending Fix | ||
| Amazon Linux 2 - Ecs Extra | containerd | Pending Fix | ||
| Amazon Linux 2023 | containerd | Pending Fix | ||
| Amazon Linux 2 - Aws-nitro-enclaves-cli Extra | docker | Pending Fix | ||
| Amazon Linux 2 - Docker Extra | docker | Pending Fix | ||
| Amazon Linux 2 - Ecs Extra | docker | Pending Fix | ||
| Amazon Linux 2023 | docker | Pending Fix | ||
| Amazon Linux 2023 | git-lfs | Pending Fix | ||
| Amazon Linux 2 - Core | nerdctl | 2026-06-08 | ALAS2-2026-3334 | Fixed |
| Amazon Linux 2023 | nerdctl | 2026-06-08 | ALAS2023-2026-1788 | Fixed |
| Amazon Linux 2 - Core | rclone | Pending Fix | ||
| Amazon Linux 2023 | rclone | 2026-06-08 | ALAS2023-2026-1810 | Fixed |
| Amazon Linux 2 - Docker Extra | runfinch-finch | 2026-06-08 | ALAS2DOCKER-2026-128 | Fixed |
| Amazon Linux 2023 | runfinch-finch | 2026-06-08 | ALAS2023-2026-1809 | Fixed |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |