Description
Flatpak before 1.0.7, and 1.1.x and 1.2.x before 1.2.3, exposes /proc in the apply_extra script sandbox, which allows attackers to modify a host-side executable file.
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 14 | flatpak | 1.2.3-1 | — |
| Debian 13 | flatpak | 1.2.3-1 | — |
| Debian 12 | flatpak | 1.2.3-1 | — |
| Debian 9 | flatpak | 0.8.9-0+deb9u2 | DSA-4390-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | flatpak | 1.0.7-0ubuntu0.18.04.1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | flatpak +2 | 1.0.2-4.el7_6 | RHSA-2019:0375 |
| RHEL 7 | flatpak-builder | 1.0.0-4.el7_6 | RHSA-2019:0375 |
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 Leap 15.0 | flatpak | 0.10.4-lp150.8.1 | openSUSE-SU-2019:2038-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | flatpak +2 | 1.0.2-4.amzn2.0.1 | ALAS2-2019-1183 |
| Amazon Linux 2 | flatpak-builder | 1.0.0-4.amzn2.0.1 | ALAS2-2019-1183 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | flatpak +2 | 1.0.2-4.el7_6 | ELSA-2019-0375 |
| Oracle Linux 7 | flatpak-builder | 1.0.0-4.el7_6 | ELSA-2019-0375 |
Advisories 6
- RHSA-2019:0375 Red Hat Security Advisory: flatpak security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-4390-1 flatpak - security update Debian Security (DSA / DLA) · Mar 9, 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
- ALAS2-2019-1183 Important: flatpak security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Mar 28, 2019
- ELSA-2019-0375 Important: flatpak security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Feb 19, 2019