CVE-2015-4177 (GCVE-0-2015-4177)
Vulnerability from cvelistv5 – Published: 2016-05-02 10:00 – Updated: 2024-08-06 06:04
VLAI
EPSS
VEX
Summary
The collect_mounts function in fs/namespace.c in the Linux kernel before 4.0.5 does not properly consider that it may execute after a path has been unmounted, which allows local users to cause a denial of service (system crash) by leveraging user-namespace root access for an MNT_DETACH umount2 system call.
Severity
5.5 (Medium)
CWE
- n/a
Assigner
References
7 references
| URL | Tags |
|---|---|
| http://git.kernel.org/cgit/linux/kernel/git/torva… | x_refsource_CONFIRM |
| http://openwall.com/lists/oss-security/2015/05/29/5 | mailing-listx_refsource_MLIST |
| https://bugzilla.redhat.com/show_bug.cgi?id=1248486 | x_refsource_CONFIRM |
| https://github.com/torvalds/linux/commit/cd4a4017… | x_refsource_CONFIRM |
| http://www.kernel.org/pub/linux/kernel/v4.x/Chang… | x_refsource_CONFIRM |
| http://openwall.com/lists/oss-security/2015/05/29/10 | mailing-listx_refsource_MLIST |
| http://www.openwall.com/lists/oss-security/2015/06/04/5 | mailing-listx_refsource_MLIST |
Date Public
2015-05-29 00:00
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"lastModified": "2024-11-21T02:30:34.583",
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"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2025-11-21T12:05:33+00:00",
"cve": "CVE-2015-4177",
"id": "CVE-2015-4177",
"initial_release_date": "2015-07-01T00:00:00+00:00",
"product_status:known_affected": "40",
"product_status:known_not_affected": "16",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: Race conditions in collect_mounts",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2015/cve-2015-4177.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-07-29T00:09:58Z",
"cve": "CVE-2015-4177",
"id": "CVE-2015-4177",
"initial_release_date": "2023-02-15T05:18:11Z",
"product_status:known_not_affected": "47",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2015-4177",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2015-4177.json",
"version": "7"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
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