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Vulnerability record · CVE-2015-1328 · published 28 November 2016

CVE-2015-1328: Canonical ubuntu linux permissions and access controls vulnerability

Canonical · Ubuntu Linux

The overlayfs implementation in the linux (aka Linux kernel) package before 3.19.0-21.21 in Ubuntu through 15.04 does not properly check permissions for file creation in the upper filesystem directory, which allows local users to obtain root access by leveraging a configuration in which overlayfs is permitted in an arbitrary mount namespace.

7.8 CVSS 3.0 High EPSS 38% · top 1.5% CWE-264 · Permissions and access controls
7.8CVSS 3.0 base score, v2 7.2
38%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
12References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

The overlayfs implementation in the linux (aka Linux kernel) package before 3.19.0-21.21 in Ubuntu through 15.04 does not properly check permissions for file creation in the upper filesystem directory, which allows local users to obtain root access by leveraging a configuration in which overlayfs is permitted in an arbitrary mount namespace.

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://seclists.org/oss-sec/2015/q2/717 Mailing ListThird Party Advisory
http://www.exploit-db.com/exploits/40688/ ExploitVDB Entry
http://www.securityfocus.com/bid/75206 Third Party AdvisoryVDB Entry
https://people.canonical.com/~ubuntu-security/cve/2015/CVE-2015-1328.html Vendor Advisory
https://security-tracker.debian.org/tracker/CVE-2015-1328 Third Party Advisory
https://www.exploit-db.com/exploits/37292/
http://seclists.org/oss-sec/2015/q2/717 Mailing ListThird Party Advisory
http://www.exploit-db.com/exploits/40688/ ExploitVDB Entry
http://www.securityfocus.com/bid/75206 Third Party AdvisoryVDB Entry
https://people.canonical.com/~ubuntu-security/cve/2015/CVE-2015-1328.html Vendor Advisory
https://security-tracker.debian.org/tracker/CVE-2015-1328 Third Party Advisory
https://www.exploit-db.com/exploits/37292/

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Source: NIST National Vulnerability Database (record CVE-2015-1328), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.