Summary
Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2026-56854: The source-address critical option in the Permissions returned by an authentication callback was only enforced for the PublicKeyCallback and VerifiedPublicKeyCallback paths, extending the fix for CVE-2026-46595. Permissions returned by the PasswordCallback, KeyboardInteractiveCallback, NoClientAuthCallback, and GSSAPIWithMICConfig.AllowLogin callbacks were not validated against the client's remote address, so a source-address restriction set by those callbacks was silently ignored. The check is now applied to the Permissions returned by any authentication callback.
Fixed packages 2
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2 | rclone | 0:1.55.1-1.amzn2.0.11 |
| Amazon Linux · 2 | rclone-debuginfo | 0:1.55.1-1.amzn2.0.11 |
Vulnerabilities 1
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High 7.5
Source-address critical option not enforced for non-public-key auth callbacks in golang.org/x/crypto/ssh
The source-address critical option in the Permissions returned by an authentication callback was only enforced for the PublicKeyCallback and VerifiedPublicKeyCallback paths, extending the fix for CVE-2026-46595. Permissions returned by the PasswordCallback, K…
References
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web
https://alas.aws.amazon.com/cve/html/CVE-2026-56854.html