vulnerability
Gentoo Linux: CVE-2020-28049: SDDM: Privilege Escalation
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 3 | (AV:L/AC:M/Au:N/C:P/I:P/A:N) | Nov 4, 2020 | Feb 5, 2024 | Aug 13, 2025 |
Severity
3
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:N)
Published
Nov 4, 2020
Added
Feb 5, 2024
Modified
Aug 13, 2025
Description
An issue was discovered in SDDM before 0.19.0. It incorrectly starts the X server in a way that - for a short time period - allows local unprivileged users to create a connection to the X server without providing proper authentication. A local attacker can thus access X server display contents and, for example, intercept keystrokes or access the clipboard. This is caused by a race condition during Xauthority file creation.
Solution
gentoo-linux-upgrade-x11-misc-sddm
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