CVE-2016-2568

· HIGHModified

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CVSS v3.1

7.8

EPSS

0.35%

Published

Feb 13, 2017

Modified

May 12, 2026

Public PoC / Exploit (1)

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Links to public security research (Exploit-DB, Nuclei, Trickest, GitHub) for defensive use only.

Description

pkexec, when used with --user nonpriv, allows local users to escape to the parent session via a crafted TIOCSTI ioctl call, which pushes characters to the terminal's input buffer.

CVSS Vector

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

Weaknesses (CWE)

CWE-116

Affected Products (3)

freedesktop · polkitvulnerable

redhat · enterprise_linuxvulnerable

References (10)

http://www.openwall.com/lists/oss-security/2016/02/26/3

Mailing ListThird Party Advisory

https://access.redhat.com/security/cve/cve-2016-2568

Third Party Advisory

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=816062

Mailing ListThird Party Advisory

https://bugzilla.redhat.com/show_bug.cgi?id=1300746

Issue TrackingThird Party Advisory

https://ubuntu.com/security/CVE-2016-2568

Third Party Advisory

http://www.openwall.com/lists/oss-security/2016/02/26/3

Mailing ListThird Party Advisory

https://access.redhat.com/security/cve/cve-2016-2568

Third Party Advisory

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=816062

Mailing ListThird Party Advisory

https://bugzilla.redhat.com/show_bug.cgi?id=1300746

Issue TrackingThird Party Advisory

https://ubuntu.com/security/CVE-2016-2568

Third Party Advisory

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