Vulnerabilities in GNU Screen Affect Ubuntu 22.04 LTS

Vulnerabilities in GNU Screen Affect Ubuntu 22.04 LTS

First seen 27 Jan 2026, 11:01 UTC UbuntuLinuxsecurity 34.3

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Multiple security vulnerabilities were identified in GNU Screen, affecting Ubuntu 22.04 LTS. These issues involve improper handling of signals and PTY permissions, allowing local attackers to send privileged signals and potentially connect to unauthorized screen sessions. The vulnerabilities are tracked under CVE-2023-24626 and CVE-2025-46802.