CVE-2016-1576
The overlayfs implementation in the Linux kernel through 4.5.2 does not properly restrict the mount namespace, which allows local users to gain privileges by mounting an overlayfs filesystem on top of
02 Description
The overlayfs implementation in the Linux kernel through 4.5.2 does not properly restrict the mount namespace, which allows local users to gain privileges by mounting an overlayfs filesystem on top of
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 1.12% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 66.2% of scored records. A rank, not a probability.
- NVD base score
- 7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2016-05-02 10:00Z10 YR AGO
- Last updated
- 2024-08-05 23:02Z2 YR AGO
- Reserved
- 2016-01-12
- Assigning CNA
- canonical
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- No CWE assigned
- Data version
- 5.1
- Document digest
- 19596124c37ced1866def40d69941b6ebebb8c14942e06a6160e45de4d522a05
05 Affected products
06 References
- launchpadlibrarian.nethttps://launchpadlibrarian.net/235300093/0005-overlayfs-Be-more-careful-about-copying-up-sxid-file.patch
- launchpadlibrarian.nethttps://launchpadlibrarian.net/235300225/0006-overlayfs-Propogate-nosuid-from-lower-and-upper-moun.patch
- git.kernel.orghttp://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e9f57ebcba563e0cd532926cab83c92bb4d79360
- bugs.launchpad.nethttps://bugs.launchpad.net/bugs/1535150
- www.openwall.com[oss-security] 20160224 Overlayfs over Fuse Privilege Escalation in USERNShttp://www.openwall.com/lists/oss-security/2016/02/24/8
- people.canonical.comhttp://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-1576.html
- www.halfdog.nethttp://www.halfdog.net/Security/2016/OverlayfsOverFusePrivilegeEscalation/
- www.openwall.com[oss-security] 20211018 Re: CVE-2021-3847: OverlayFS - Potential Privilege Escalation using overlays copy_uphttp://www.openwall.com/lists/oss-security/2021/10/18/1
07 Fixed in
Debian 12
- linux Fixed in 4.5.1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- linux Fixed in 4.5.1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- linux Fixed in 4.5.1-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- linux Fixed in 3.13.0-79.123
- linux-lts-utopic Fixed in 3.16.0-62.82~14.04.1
- linux-lts-vivid Fixed in 3.19.0-51.57~14.04.1
- linux-lts-wily Fixed in 4.2.0-30.35~14.04.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.