CVE-2015-5231

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.

Published: 2016-06-07 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-5231 is rated Low Risk (32.6/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.38%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2015-5231

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.15% 0.38% +0.23%
2 2025-03-30 0.30% 0.15% -0.16%
3 2025-03-29 — 0.30% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-5231

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.5 3.0 MEDIUM
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 1.8 3.6 [email protected]
2.1 2.0 LOW
AV:L/AC:L/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 3.9 2.9 [email protected]

Weakness enumeration for CVE-2015-5231

OS Trackers for CVE-2015-5231

vendor priority summary link
debian not yet assigned CVE-2015-5231 not yet assigned priority: Debian including 1 source packages (criu), 4 status rows across 4 suites (bookworm, forky, sid, trixie): resolved 4. https://security-tracker.debian.org/tracker/CVE-2015-5231
redhat low — https://access.redhat.com/security/cve/CVE-2015-5231
ubuntu medium CVE-2015-5231 medium priority: Ubuntu including 1 source packages (criu), 11 status rows across 11 suites (artful, bionic, cosmic, precise, trusty, upstream, vivid, wily, xenial, yakkety, zesty): ignored 5, not-affected 3, DNE 2, released 1. https://ubuntu.com/security/CVE-2015-5231

Affected software / configurations for CVE-2015-5231

Vendor Product Version Raw CPE
criu checkpoint\/restore_in_userspace — cpe:2.3:a:criu:checkpoint\/restore_in_userspace:-:*:*:*:*:*:*:*
opensuse opensuse 13.2 cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*

References for CVE-2015-5231

cvelogic Threat Intelligence