| Name | CVE-2016-2568 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 812512, 816062 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| policykit-1 (PTS) | jessie, jessie (lts) | 0.105-15~deb8u5 | vulnerable |
| stretch (security), stretch (lts), stretch | 0.105-18+deb9u2 | vulnerable |
| buster (security), buster, buster (lts) | 0.105-25+deb10u1 | vulnerable |
| bullseye (security), bullseye | 0.105-31+deb11u1 | vulnerable |
| bookworm | 122-3 | vulnerable |
| sid, trixie | 125-2 | vulnerable |
The information below is based on the following data on fixed versions.
Notes
[bookworm] - policykit-1 <ignored> (Minor issue)
[bullseye] - policykit-1 <ignored> (Minor issue)
[buster] - policykit-1 <ignored> (Minor issue)
[stretch] - policykit-1 <ignored> (Minor issue)
[jessie] - policykit-1 <ignored> (Minor issue)
[wheezy] - policykit-1 <ignored> (Minor issue)
Restricting ioctl on the kernel side seems the better approach
https://bugzilla.redhat.com/show_bug.cgi?id=1300746