VDB
CVE-2020-27837
CVE-2020-27837
PUBLISHED
Reported by redhat · Published December 28, 2020
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.
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| gnome_display_manager | gnome | 3.38.2.1 |
Affected products
| Vendor | Product | Versions |
|---|---|---|
| n/a | gdm | prior to 3.38.2.1 |
| n/a | gdm | 3.38.2.1 |
| arch | gdm | 0 |
Timeline
- Dec 28, 2020 CVE Published
- Apr 14, 2021 EPSS Score (30 in total, the first dated here)
- Aug 4, 2024 CVE Updated
- Apr 4, 2026 Security Advisory
- Sep 1, 2026 Coalition ESS Score
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