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.
Fix
Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.
Change history 1
- First seenCVSS 7.8 · freedesktop, redhatNVD modified 2026-10-08 22:16
Affected (CPE criteria) 3
cpe:2.3:a:freedesktop:polkit:*:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
References 10
- http://www.openwall.com/lists/oss-security/2016/02/26/3 Mailing List, Third 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 List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1300746 Issue Tracking, Third Party Advisory
- https://ubuntu.com/security/CVE-2016-2568 Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/02/26/3 Mailing List, Third 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 List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1300746 Issue Tracking, Third Party Advisory
- https://ubuntu.com/security/CVE-2016-2568 Third Party Advisory