| Name | CVE-2026-28372 |
| Description | telnetd in GNU inetutils through 2.7 allows privilege escalation that can be exploited by abusing systemd service credentials support added to the login(1) implementation of util-linux in release 2.40. This is related to client control over the CREDENTIALS_DIRECTORY environment variable, and requires an unprivileged local user to create a login.noauth file. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-4527-1, DSA-6144-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| inetutils (PTS) | bookworm, bookworm (security) | 2:2.4-2+deb12u3 | fixed |
| trixie (security), trixie | 2:2.6-3+deb13u3 | fixed | |
| forky, sid | 2:2.8-3 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| inetutils | source | bullseye | 2:2.0-1+deb11u4 | DLA-4527-1 | ||
| inetutils | source | bookworm | 2:2.4-2+deb12u3 | |||
| inetutils | source | trixie | 2:2.6-3+deb13u2 | DSA-6144-1 | ||
| inetutils | source | (unstable) | 2:2.7-3 |
https://lists.gnu.org/archive/html/bug-inetutils/2026-02/msg00000.html
Fixed by: https://cgit.git.savannah.gnu.org/cgit/inetutils.git/commit/?id=4db2f19f4caac03c7f4da6363c140bd70df31386
systemd service credentials support for login(1) from util-linux introduced in 2.40 release
Not exploitable with util-linux/logins versions before adding this support.