USN-7851-2
USN-7851-2 · runc-app, runc-stable regression
This page contains facts from public vulnerability sources. Check the original advisory before updating.
USN-7851-1 fixed vulnerabilities in runC. The introduction of a new upstream release has caused regressions in runc-app and runc-stable. This update fixes the problem. Original advisory details: Lei Wang and Li Fubang discovered that runC incorrectly handled masked paths. An attacker could possibly replace a container's /dev/null with a symlink to some other procfs file and possibly escape a container. (CVE-2025-31133) Lei Wang and Li Fubang discovered that runC incorrectly handled the /dev/console bind-mounts. An attacker could potentially exploit this issue to build-mount a symlink and escape a container. (CVE-2025-52565) Li Fubang and Tõnis Tiigi discovered that the fix for CVE-2019-16884 was incomplete. An attacker could possibly use this issue to cause a denial of service or escape the container. (CVE-2025-52881)
Fix available
- Published
- Updated
Stack: system
Affected products and versions
runc-app Ubuntu:22.04:LTS
- Versions
- 1.1.12-0ubuntu2~22.04.1
- 1.2.5-0ubuntu1~22.04.1
- 1.3.0-0ubuntu2~22.04.1
- 1.3.3-0ubuntu1~22.04.2
- Affected ranges
- ECOSYSTEM: < 1.3.3-0ubuntu1~22.04.3
Update to 1.3.3-0ubuntu1~22.04.3
runc-app Ubuntu:24.04:LTS
- Versions
- 1.1.10-0ubuntu1
- 1.1.12-0ubuntu1
- 1.1.12-0ubuntu2
- 1.1.12-0ubuntu3
- 1.1.12-0ubuntu3.1
- 1.2.5-0ubuntu1~24.04.1
- 1.3.0-0ubuntu2~24.04.1
- 1.3.3-0ubuntu1~24.04.2
- Affected ranges
- ECOSYSTEM: < 1.3.3-0ubuntu1~24.04.3
Update to 1.3.3-0ubuntu1~24.04.3
runc-app Ubuntu:25.10
- Versions
- 1.2.5-0ubuntu1
- 1.3.0-0ubuntu1
- 1.3.0-0ubuntu2
- 1.3.3-0ubuntu1~25.10.2
- Affected ranges
- ECOSYSTEM: < 1.3.3-0ubuntu1~25.10.3
Update to 1.3.3-0ubuntu1~25.10.3
runc-stable Ubuntu:25.10
- Versions
- 1.3.0-0ubuntu1
- 1.3.3-0ubuntu1~25.10.2
- Affected ranges
- ECOSYSTEM: < 1.3.3-0ubuntu1~25.10.3
Update to 1.3.3-0ubuntu1~25.10.3