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Full vulnerability report · 2015
CVE-2015-3339High confidence

n/a: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

n/a · n/a

6.2MediumCVSS 2.0
Recommended action
Scheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Fix not verified
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2015-3384

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionScheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Fix not verified
01

What, why and how

Race condition in the prepare_binprm function in fs/exec.c in the Linux kernel before 3.19.6 allows local users to gain privileges by executing a setuid program at a time instant when a chown to root is in progress, and the ownership is changed but the setuid bit is not yet stripped.

What

Race condition in the prepare_binprm function in fs/exec.c in the Linux kernel before 3.19.6 allows local users to gain privileges by executing a setuid program at a time instant when a chown to root is in progress, and the ownership is changed but the setuid bit is not yet stripped.

Why

The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

How

An attacker operating through the affected interface may attempt exploitation when the stated preconditions are met. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

Race condition in the prepare_binprm function in fs/exec.c in the Linux kernel before 3.19.6 allows local users to gain privileges by executing a setuid program at a time instant when a chown to root is in progress, and the ownership is changed but the setuid bit is not yet stripped.

Why

The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

How

An attacker operating through the affected interface may attempt exploitation when the stated preconditions are met. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
the affected interface → Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Unspecified
Privileges required
None: unauthenticated exploitation is possible
User interaction
Not stated in the selected CVSS metric
Attack complexity
High: exploitation depends on specific conditions
Security boundary
Not stated in the selected CVSS metric
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-362

CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition'). The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
AV:L/AC:H/Au:N/C:C/I:C/A:C
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
UnauthenticatedCWE-362
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

CERT-FR · French · CERTFR-2015-AVI-498Multiples vulnérabilités dans les noyaux Linux Red Hat

De multiples vulnérabilités ont été corrigées dans les noyaux Linux Red Hat . Elles permettent à un attaquant de provoquer un déni de service et un contournement de la politique de sécurité.

Official advisory ↗
CERT-FR · French · CERTFR-2015-AVI-359Multiples vulnérabilités dans le noyau Linux de Fedora

.cve.org/CVERecord?id=CVE-2015-1333 Référence CVE CVE-2015-1420 https://www.cve.org/CVERecord?id=CVE-2015-1420 Référence CVE CVE-2015-1421 https://www.cve.org/CVERecord?id=CVE-2015-1421 Référence CVE CVE-2015-1593 https://www.cve.org/CVERecord?id=CVE-2015-1593 Référence CVE CVE-2015-2042 https://www.cve.org/CVERecord?id=CVE-2015-2042 Référence CVE CVE-2015-2150 https://www.cve.org/CVERecord?id=CVE-2015-2150 Référence CVE CVE-2015-2666 https://www.cve.org/CVERecord?id=CVE-2015-2666 Référence CVE CVE-2015-3290 https://www.cve.org/CVERecord?id=CVE-2015-3290 Référence CVE CVE-2015-3291 https://www.cve.org/CVERecord?id=CVE-2015-3291 Référence CVE CVE-2015-3339 https://www.cve.org/CVERecord?id=CVE-2015-3339 Référence CVE CVE-2015-3636 https://www.cve.org/CVERecord?id=CVE-2015-3636 Référence CVE CVE-2015-5697 https://www.cve.org/CVERecord?id=CVE-2015-5697 Gestion détaillée du document le 20 août 2015 version initiale. Alertes Avis Bulletins d’actualités Mentions légales Conditions générales À propos Contact cyber.gouv.fr service-public.fr legifrance.gouv.fr info.gouv.fr france.fr info.gouv.fr/risques Premier Ministre / Secrétariat Général de la Défense et de la Sécurité Nationale / Agence nationale de la sécurité des systèmes d'information

Official advisory ↗
CERT-FR · French · CERTFR-2015-AVI-357Multiples vulnérabilités dans le noyau Linux de OpenSUSE

.cve.org/CVERecord?id=CVE-2014-9729 Référence CVE CVE-2014-9730 https://www.cve.org/CVERecord?id=CVE-2014-9730 Référence CVE CVE-2014-9731 https://www.cve.org/CVERecord?id=CVE-2014-9731 Référence CVE CVE-2015-1420 https://www.cve.org/CVERecord?id=CVE-2015-1420 Référence CVE CVE-2015-1465 https://www.cve.org/CVERecord?id=CVE-2015-1465 Référence CVE CVE-2015-2041 https://www.cve.org/CVERecord?id=CVE-2015-2041 Référence CVE CVE-2015-2922 https://www.cve.org/CVERecord?id=CVE-2015-2922 Référence CVE CVE-2015-3212 https://www.cve.org/CVERecord?id=CVE-2015-3212 Référence CVE CVE-2015-3290 https://www.cve.org/CVERecord?id=CVE-2015-3290 Référence CVE CVE-2015-3339 https://www.cve.org/CVERecord?id=CVE-2015-3339 Référence CVE CVE-2015-3636 https://www.cve.org/CVERecord?id=CVE-2015-3636 Référence CVE CVE-2015-4001 https://www.cve.org/CVERecord?id=CVE-2015-4001 Référence CVE CVE-2015-4002 https://www.cve.org/CVERecord?id=CVE-2015-4002 Référence CVE CVE-2015-4003 https://www.cve.org/CVERecord?id=CVE-2015-4003 Référence CVE CVE-2015-4036 https://www.cve.org/CVERecord?id=CVE-2015-4036 Référence CVE CVE-2015-4167 https://www.cve.org/CVERecord?id=CVE-2015-4167 Référence CVE CVE-2015-4692 https://www.cve.org/CVERecord?id=CVE-2015-4692 Référence CVE CVE-2015-4700 https://www.cve.org/CVERecord?id=CVE-2015-4700 Ré

Official advisory ↗
CERT-FR · French · CERTFR-2015-AVI-198Multiples vulnérabilités dans le noyau Linux

De multiples vulnérabilités ont été corrigées dans le noyau Linux . Elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance et une élévation de privilèges.

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2015-002840Linux Kernel の fs/exec.c 内の prepare_binprm 関数における権限を取得される脆弱性

Linux Kernel の fs/exec.c 内の prepare_binprm 関数には、競合状態により、権限を取得される脆弱性が存在します。

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Fix not verified
Affected
n/a: n/a
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
No verified patch reference is present in the current structured sources. Check the vendor advisory before making a change.
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 27 May 2015 · Last source change 6 Aug 2024, 05:47 UTC · CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVE recordCVE.org · 5.1
CVSS sourceNIST NVD
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-09-01
European sourceENISA EUVD · EUVD-2015-3384
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceNIST NVD
NVD statusNVD modified after enrichment

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Vendor guidanceAuthoritative vendor guidance changed from vendor advisory to vendor advisory.
    Before
    vendor advisory
    After
    vendor advisory
    af854a3a-2127-422b-91ae-364da2661108
  2. SeveritySeverity changed from Unknown to Medium.
    Before
    Unknown
    After
    Medium
    NIST NVD
  3. CVSS scoreCVSS score changed from not recorded to 6.2 (CVSS 2.0 · NIST NVD · AV:L/AC:H/Au:N/C:C/I:C/A:C).
    Before
    not recorded
    After
    6.2 (CVSS 2.0 · NIST NVD · AV:L/AC:H/Au:N/C:C/I:C/A:C)
    NIST NVD
  4. ENISA EUVD mappingEUVD-2015-3384 was added to the official ENISA EUVD mapping for this CVE.
    Before
    not recorded
    After
    {"euvdId":"EUVD-2015-3384"}
    ENISA EUVD
  5. Catalogue recordCVE added to the BlackTree catalogue.
    CNA
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2015-3339 · cve.blacktree.nl