Description
attach.c in LXC 1.1.2 and earlier uses the proc filesystem in a container, which allows local container users to escape AppArmor or SELinux confinement by mounting a proc filesystem with a crafted (1) AppArmor profile or (2) SELinux label.
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 | lxc | 1:1.0.7-4 | — |
| Debian 13 | lxc | 1:1.0.7-4 | — |
| Debian 12 | lxc | 1:1.0.7-4 | — |
| Debian 8 | lxc | 1:1.0.6-6+deb8u1 | DSA-3317-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | lxc | 1.0.7-0ubuntu0.2 | USN-2675-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | lxc | 2.0.4-2.1 | openSUSE-SU-2024:10416-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | lxc +2 | 1.0.7-2.0.7.el7 | ELSA-2015-3065 |
Advisories 4
- USN-2675-1 lxc vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-3317-1 lxc - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10416-1 liblxc-devel-2.0.4-2.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- ELSA-2015-3065 Important: lxc security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jul 31, 2015
References
- DSA-3317 vendor-advisory
- USN-2675-1 vendor-advisory
- openSUSE-SU-2015:1315 vendor-advisory
- 75998 vdb-entry
- https://service.ait.ac.at/security/2015/LxcSecurityAnalysis.html
- https://github.com/lxc/lxc/commit/5c3fcae78b63ac9dd56e36075903921bd9461f9e
- openSUSE-SU-2015:1317 vendor-advisory
- openSUSE-SU-2019:1481 vendor-advisory