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: 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.
ENISA EUVD · EUVD-2015-3384Official EUVD mapping
0 linked advisory records.
Official EUVD record ↗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
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。
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.
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.
CVE-2015-3339: n/a: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') | BlackTree