screen: socket.c in GNU Screen through 4.9.0, when installed setuid or setgid (the default on platforms such as Arch Linux an...
CVE-2023-24626 is fixed in 3 products on 1 platform, first by screen 4.6.2-1ubuntu1.1+esm1, released April 7, 2023. It is not reported as exploited. Patch Radar priority: Routine.
socket.c in GNU Screen through 4.9.0, when installed setuid or setgid (the default on platforms such as Arch Linux and FreeBSD), allows local users to send a privileged SIGHUP signal to any PID, causing a denial of service or disruption of the target process.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| screen · Debian 13.5 (trixie) | 4.9.1-1 | DEBIAN-CVE-2023-24626 | Apr 8, 2023 |
| screen · Debian 14 | 4.9.1-1 | DEBIAN-CVE-2023-24626 | Apr 8, 2023 |
| screen · Ubuntu 18.04.6 LTS (bionic) | 4.6.2-1ubuntu1.1+esm1 | screen 4.6.2-1ubuntu1.1+esm1 | Apr 7, 2023 |
| screen · Ubuntu 22.04.1 LTS (jammy) | 4.9.0-1ubuntu0.1 | screen 4.9.0-1ubuntu0.1 | May 7, 2025 |
| screen · amzn 2023 | 4.8.0-5.amzn2023.0.3 | ALAS2023-2023-224 | Jun 21, 2023 |
| screen-debuginfo · amzn 2023 | 4.8.0-5.amzn2023.0.3 | ALAS2023-2023-224 | Jun 21, 2023 |
| screen-debugsource · amzn 2023 | 4.8.0-5.amzn2023.0.3 | ALAS2023-2023-224 | Jun 21, 2023 |
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