CVE-2016-1575

Exp

The overlayfs implementation in the Linux kernel through 4.5.2 does not properly maintain POSIX ACL xattr data, which allows local users to gain privileges by leveraging a group-writable setgid directory.

Published: 2016-05-02 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2016-1575 is rated High Exploit Risk (66/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.92%). 2 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2016-1575

EDB-ID Source Kind Published Link
41762 exploit_db edb 2016-11-22 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2016-1575

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.53% 0.92% +0.40%
2 2025-03-30 0.86% 0.53% -0.33%
3 2025-03-29 — 0.86% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2016-1575

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 5.9 [email protected]
7.2 2.0 HIGH
AV:L/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 3.9 10.0 [email protected]

Weakness enumeration for CVE-2016-1575

OS Trackers for CVE-2016-1575

vendor priority summary link
debian not yet assigned CVE-2016-1575 not yet assigned priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2016-1575
redhat — — https://access.redhat.com/security/cve/CVE-2016-1575
suse high CVE-2016-1575 severity important: SUSE including 10 source package names (kernel-default, kernel-default-base, …), 238 product×package rows across 50 product lines (HPE Helion OpenStack 8, SLES for SAP Applications 11 SP3, … (50 product lines)): Known Not Affected 238. https://www.suse.com/security/cve/CVE-2016-1575/
ubuntu medium CVE-2016-1575 medium priority: Ubuntu including 27 source packages (linux, linux-armadaxp, …), 207 status rows across 8 suites (precise, trusty, upstream, vivid, wily, xenial, yakkety, zesty): DNE 135, needed 27, ignored 22, not-affected 15, released 8. https://ubuntu.com/security/CVE-2016-1575

Affected software / configurations for CVE-2016-1575

Vendor Product Version Raw CPE
linux linux_kernel <= 4.5.2 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
canonical ubuntu_core 15.04 cpe:2.3:o:canonical:ubuntu_core:15.04:*:*:*:*:*:*:*
canonical ubuntu_linux 12.04 cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 14.04 cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 15.10 cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*
canonical ubuntu_linux 16.04 cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 16.10 cpe:2.3:o:canonical:ubuntu_linux:16.10:*:*:*:*:*:*:*
canonical ubuntu_touch 15.04 cpe:2.3:o:canonical:ubuntu_touch:15.04:*:*:*:*:*:*:*

References for CVE-2016-1575

cvelogic Threat Intelligence