Description
An issue was discovered in GNOME gnome-desktop 3.26, 3.28, and 3.30 prior to 3.30.2.2, and 3.32 prior to 3.32.1.1. A compromised thumbnailer may escape the bubblewrap sandbox used to confine thumbnailers by using the TIOCSTI ioctl to push characters into the input buffer of the thumbnailer's controlling terminal, allowing an attacker to escape the sandbox if the thumbnailer has a controlling terminal. This is due to improper filtering of the TIOCSTI ioctl on 64-bit systems, similar to CVE-2019-10063.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 11 | gnome-desktop3 | 3.30.2.1-2 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | gnome-desktop3 | 3.28.2-0ubuntu1.3 | USN-3994-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 | flatpak | 0.10.4-4.10.1 | SUSE-SU-2019:2185-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | gnome-desktop | 40.4-1.3 | openSUSE-SU-2024:10796-1 |
| openSUSE Leap 15.4 | gnome-desktop | 3.26.2-150000.4.3.1 | SUSE-SU-2022:3837-1 |
| openSUSE Leap 15.3 | gnome-desktop | 3.26.2-150000.4.3.1 | SUSE-SU-2022:3837-1 |
| openSUSE Leap 15.0 | flatpak | 0.10.4-lp150.8.1 | openSUSE-SU-2019:2038-1 |
Advisories 5
- USN-3994-1 gnome-desktop3 vulnerability Ubuntu Security Notices (USN) · Apr 22, 2026
- openSUSE-SU-2024:10796-1 gnome-desktop-lang-40.4-1.3 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:3837-1 Security update for gnome-desktop SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:2185-1 Security update for flatpak SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:2038-1 Security update for flatpak SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://gitlab.gnome.org/GNOME/gnome-desktop/issues/112
- FEDORA-2019-992622684b vendor-advisory
- USN-3994-1 vendor-advisory
- GLSA-201908-28 vendor-advisory
- openSUSE-SU-2019:2038 vendor-advisory