vulnerability
Alpine Linux: CVE-2021-34557: Classic Buffer Overflow
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 2 | (AV:L/AC:L/Au:N/C:N/I:N/A:P) | Jun 10, 2021 | Aug 22, 2024 | Dec 5, 2025 |
Severity
2
CVSS
(AV:L/AC:L/Au:N/C:N/I:N/A:P)
Published
Jun 10, 2021
Added
Aug 22, 2024
Modified
Dec 5, 2025
Description
XScreenSaver 5.45 can be bypassed if the machine has more than ten disconnectable video outputs. A buffer overflow in update_screen_layout() allows an attacker to bypass the standard screen lock authentication mechanism by crashing XScreenSaver. The attacker must physically disconnect many video outputs.
Solution
alpine-linux-upgrade-xscreensaver
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