Description
Singularity 2.3.0 through 2.5.1 is affected by an incorrect access control on systems supporting overlay file system. When using the overlay option, a malicious user may access sensitive information by exploiting a few specific Singularity features.
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.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | singularity-container | 2.4.2-4ubuntu0.1~esm1 | USN-4840-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Package Hub 12 SP3 | singularity | 2.3.2-11.1 | openSUSE-SU-2019:0095-1, openSUSE-SU-2018:1969-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | singularity | 3.8.3-1.2 | openSUSE-SU-2024:11384-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/hpcng/singularity | >= 2.3.0, < 2.5.2 | 2.5.2 | GHSA-4x32-h296-rg6j |
Advisories 4
- USN-4840-1 singularity-container vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- openSUSE-SU-2019:0095-1 Security update for singularity SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2018:1969-1 Security update for singularity SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11384-1 singularity-3.8.3-1.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026