Description
Firejail before 0.9.44.4, when running on a Linux kernel before 4.8, allows context-dependent attackers to bypass a seccomp-based sandbox protection mechanism via the --allow-debuggers argument.
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 | firejail | 0.9.44.4-1 | — |
| Debian 13 | firejail | 0.9.44.4-1 | — |
| Debian 12 | firejail | 0.9.44.4-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | firejail | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | firejail | 0.9.66-1.2 | openSUSE-SU-2024:10759-1 |
Advisories 1
- openSUSE-SU-2024:10759-1 firejail-0.9.66-1.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- [oss-security] 20170107 Re: Firejail local root exploit mailing-list
- https://blog.lizzie.io/linux-containers-in-500-loc.html#fn.51
- GLSA-201701-62 vendor-advisory
- https://github.com/netblue30/firejail/commit/6b8dba29d73257311564ee7f27b9b14758cc693e
- 97120 vdb-entry
- https://firejail.wordpress.com/download-2/release-notes/