vulnerability
Ubuntu: (CVE-2020-27837): gdm3 vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:L/AC:M/Au:N/C:P/I:P/A:P) | Dec 28, 2020 | Jun 26, 2025 | Mar 27, 2026 |
Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
Dec 28, 2020
Added
Jun 26, 2025
Modified
Mar 27, 2026
Description
A flaw was found in GDM in versions prior to 3.38.2.1. A race condition in the handling of session shutdown makes it possible to bypass the lock screen for a user that has autologin enabled, accessing their session without authentication. This is similar to CVE-2017-12164, but requires more difficult conditions to exploit.
Solution
no-fix-ubuntu-package
Rapid7 Labs
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