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CVE-2014-8989
The Linux kernel through 3.17.4 does not properly restrict dropping of supplemental group memberships in certain namespace scenarios,…
Medium4.6EPSS 0.50%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
The Linux kernel through 3.17.4 does not properly restrict dropping of supplemental group memberships in certain namespace scenarios, which allows local users to bypass intended file permissions by leveraging a POSIX ACL containing an entry for the group category that is more restrictive than the entry for the other category, aka a "negative groups" issue, related to kernel/groups.c, kernel/uid16.c, and kernel/user_namespace.c.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium4.6 | AV:L/AC:L/Au:N/C:P/I:P/A:P |
- EPSS (exploitation in 30 days)
- 0.50% · top 57% of all CVEs (4 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.6.
Weakness
Affected products
n/a
- affected n/a
References (10)
- FEDORA-2015-0517 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- USN-2515-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- 71154 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- USN-2518-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- MDVSA-2015:058 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
- FEDORA-2015-0515 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- http://thread.gmane.org/gmane.linux.man/7385/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- USN-2517-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- [oss-security] 20141120 Re: Linux user namespaces can bypass group-based restrictions - Linux kernel (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- USN-2516-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2014-8989)Record last updated .