CVE-2015-1328
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…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 37.7%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
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
- 7.8 HIGHCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 37.68% probability · 99th percentile
- Public exploits
- 3 in Exploit-DB · verified · first 16 June 2015
- CISA KEV
- Not listed
- Weakness
- CWE-264
- Affected
- canonical/ubuntu linux · linux/linux kernel
- Source
- security@ubuntu.com
EPSS moved from 39.0% on 21 September 2026 to 37.7% on 4 November 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
Public exploits (3)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
| EDB-ID | Title | Type | Published | Verified |
|---|---|---|---|---|
| EDB-40688source ↗ | Linux Kernel (Ubuntu / Fedora / RedHat) - 'Overlayfs' Local Privilege Escalation (Metasploit)linux · Metasploit | local | 2 November 2016 | yes |
| EDB-37293source ↗ | Linux Kernel 3.13.0 < 3.19 (Ubuntu 12.04/14.04/14.10/15.04) - 'overlayfs' Local Privilege Escalation (Access /etc/shadow)linux · rebel | local | 16 June 2015 | yes |
| EDB-37292source ↗ | Linux Kernel 3.13.0 < 3.19 (Ubuntu 12.04/14.04/14.10/15.04) - 'overlayfs' Local Privilege Escalationlinux · rebel | local | 16 June 2015 | yes |
References
- http://seclists.org/oss-sec/2015/q2/717Mailing List, Third Party Advisory
- http://www.exploit-db.com/exploits/40688/Exploit, VDB Entry
- http://www.securityfocus.com/bid/75206Third Party Advisory, VDB Entry
- https://people.canonical.com/~ubuntu-security/cve/2015/CVE-2015-1328.htmlVendor Advisory
- https://security-tracker.debian.org/tracker/CVE-2015-1328Third Party Advisory
- https://www.exploit-db.com/exploits/37292/
- http://seclists.org/oss-sec/2015/q2/717Mailing List, Third Party Advisory
- http://www.exploit-db.com/exploits/40688/Exploit, VDB Entry
- http://www.securityfocus.com/bid/75206Third Party Advisory, VDB Entry
- https://people.canonical.com/~ubuntu-security/cve/2015/CVE-2015-1328.htmlVendor Advisory
- https://security-tracker.debian.org/tracker/CVE-2015-1328Third Party Advisory
- https://www.exploit-db.com/exploits/37292/
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.