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
Published Nov 28, 2016
7.8
HIGHCVSS 3.0
EPSS 37.68%
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.
Affected products
No data.
Configuration 1
- ≤ 15.04
Configuration 2
- ≤ 3.19
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue does not affect the versions of the kernel package as shipped with Red Hat Enterprise Linux 5, 6, 7 and Red Hat Enterprise MRG 2.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AV:L/AC:L/Au:N/C:C/I:C/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (19 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 37.68% (0.37679) | 98.50th | v5 (v2026.06.15) |
| Sep 22, 2026 | 37.68% (0.37679) | 98.47th | v5 (v2026.06.15) |
| Sep 21, 2026 | 39.03% (0.39031) | 98.57th | v5 (v2026.06.15) |
| Sep 6, 2026 | 37.68% (0.37679) | 98.44th | v5 (v2026.06.15) |
| Sep 5, 2026 | 39.03% (0.39031) | 98.54th | v5 (v2026.06.15) |
| Aug 30, 2026 | 37.68% (0.37679) | 98.43th | v5 (v2026.06.15) |
| Aug 28, 2026 | 39.03% (0.39031) | 98.53th | v5 (v2026.06.15) |
| Aug 24, 2026 | 37.68% (0.37679) | 98.42th | v5 (v2026.06.15) |
| Aug 23, 2026 | 39.03% (0.39031) | 98.52th | v5 (v2026.06.15) |
| Jun 15, 2026 | 37.68% (0.37679) | 98.34th | v5 (v2026.06.15) |
| Nov 7, 2025 | 88.97% (0.88965) | 99.49th | v4 (v2025.03.14) |
| Mar 17, 2025 | 90.13% (0.90134) | 99.57th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.06% (0.00062) | 28.34th | v3 (v2023.03.01) |
| Jun 11, 2024 | 0.06% (0.00062) | 26.32th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00062) | 24.31th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.57% (0.02569) | 82.02th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.57% (0.02569) | 80.26th | v2 (v2022.01.01) |
| Feb 8, 2022 | 2.57% (0.02569) | 61.97th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.11% (0.02115) | 56.78th | v2 (v2022.01.01) |
References (9)
- http://seclists.org/oss-sec/2015/q2/717 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.exploit-db.com/exploits/40688/ exploitx_refsource_EXPLOIT-DBVDB Entry
- http://www.securityfocus.com/bid/75206 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2015-1328 Vendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2015-1328
- https://people.canonical.com/~ubuntu-security/cve/2015/CVE-2015-1328.html x_refsource_CONFIRMVendor Advisory
- https://security-tracker.debian.org/tracker/CVE-2015-1328 x_refsource_CONFIRMThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2015-1328
- https://www.exploit-db.com/exploits/37292/ exploitx_refsource_EXPLOIT-DB
| Link | Providers | Tags |
|---|---|---|
| http://seclists.org/oss-sec/2015/q2/717 | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| http://www.exploit-db.com/exploits/40688/ | exploitx_refsource_EXPLOIT-DBVDB Entry | |
| http://www.securityfocus.com/bid/75206 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/security/cve/CVE-2015-1328 | Vendor Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2015-1328 | ||
| https://people.canonical.com/~ubuntu-security/cve/2015/CVE-2015-1328.html | x_refsource_CONFIRMVendor Advisory | |
| https://security-tracker.debian.org/tracker/CVE-2015-1328 | x_refsource_CONFIRMThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2015-1328 | ||
| https://www.exploit-db.com/exploits/37292/ | exploitx_refsource_EXPLOIT-DB |
Change history (0)
No recorded changes yet.