CVE-2016-1575

7.8 HIGH

Published: May 02, 2016 Modified: May 06, 2026

Description

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e9f57ebcba563e0cd532926cab83c92bb4d79360

Source: security@ubuntu.com

Patch Vendor Advisory

http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-1575.html

Source: security@ubuntu.com

Third Party Advisory

http://www.halfdog.net/Security/2016/UserNamespaceOverlayfsXattrSetgidPrivilegeEscalation/

Source: security@ubuntu.com

Exploit Third Party Advisory

http://www.openwall.com/lists/oss-security/2016/02/24/7

Source: security@ubuntu.com

Mailing List Third Party Advisory

http://www.openwall.com/lists/oss-security/2021/10/18/1

Source: security@ubuntu.com

Mailing List Third Party Advisory

https://launchpad.net/bugs/1534961

Source: security@ubuntu.com

Third Party Advisory

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e9f57ebcba563e0cd532926cab83c92bb4d79360