CVE-2015-5231: The service daemon in CRIU does not properly restrict access to non-dumpable processes, which allows local use

Routine

MEDIUM 5.5MITIGATEMITIGATE

CVE-2015-5231 is a medium-severity flaw (CVSS 5.5) affecting checkpoint\/restore in userspace, opensuse. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The service daemon in CRIU does not properly restrict access to non-dumpable processes, which allows local users to obtain sensitive information via (1) process dumps or (2) ptrace access.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 68%)
CISA exploited list	No
Weakness	CWE-200
Published	2016-06-07
Last modified	2026-06-17

Publisher (CNA): Red Hat, Inc. · Vendor: criu · opensuse

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2016-06-07 14:06 UTCPublished CVE record published
2026-06-17 00:28 UTCUpdated Record last modified

criu checkpoint\/restore in userspace MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy checkpointrestore-in-userspace || rpm -q checkpointrestore-in-userspace || checkpointrestore-in-userspace --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

opensuse opensuse MITIGATE

Affected: 13.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 13.2

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2015-5231?

checkpoint\/restore in userspace: mitigate or apply the listed mitigation; opensuse: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2015-5231 being exploited?

CVE-2015-5231 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2015-5231 affect?

CVE-2015-5231 affects checkpoint\/restore in userspace, opensuse. Severity is medium (CVSS 5.5). The service daemon in CRIU does not properly restrict access to non-dumpable processes, which allows local users to obtain sensitive information via (1) process dumps or (2) ptrace access.

How urgent is CVE-2015-5231?

Priority 27/100. No elevated risk signals yet.

Software pages

Check Point vulnerabilities

Related CVEs

CVE-2015-5228 HIGH 7.8 MITIGATE MITIGATE The service daemon in CRIU creates log and dump files insecurely, which allows local users to create arbitrary

References

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