CVE-2015-5231

Local process-memory disclosure via UID/GID-only authorization

Published Jun 7, 2016 · Updated Aug 6, 2024

Information disclosure in the CRIU service daemon allows local users to read protected process memory through dumps or ptrace access. The daemon authorizes a dump when requester and target UID/GID values match, but ignores non-dumpable state, Yama ptrace_scope, and prctl-derived restrictions. A local account sharing those identifiers with a protected process can extract its sensitive memory despite the host's configured ptrace policy.

CVSS severity5.5
Medium
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in the CRIU service daemon allows local users to read protected process memory through dumps or ptrace access. The daemon authorizes a dump when requester and target UID/GID values match, but ignores non-dumpable state, Yama ptrace_scope, and prctl-derived restrictions. A local account sharing those identifiers with a protected process can extract its sensitive memory despite the host's configured ptrace policy.

The record

CVE
CVE-2015-5231
Published
Jun 7, 2016
Updated
Aug 6, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-200, T1005
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 7, 2016CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

2.1NIST NVDAV:L/AC:L/Au:N/C:P/I:N/A:N
5.5NIST NVDCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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