inetutils vulnerabilities

UBUNTU-CVE-2026-95510

[use of uninitialized struct sigaction]

UBUNTU-CVE-2026-19720

talkd buffer overflow with long DNS names

CVE-2026-32772

telnet in GNU inetutils through 2.7 allows servers to read arbitrary environment variables from clients via NEW_ENVIRON SEND USERVAR.

• Update to 2:2.5-3ubuntu4.2

CVE-2026-32746

telnetd in GNU inetutils through 2.7 allows an out-of-bounds write in the LINEMODE SLC (Set Local Characters) suboption handler because add_slc does not check whether the buffer is full.

• Update to 2:2.5-3ubuntu4.2

CVE-2026-28372

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.

• Update to 2:2.5-3ubuntu4.2

CVE-2026-24061

telnetd in GNU Inetutils through 2.7 allows remote authentication bypass via a "-f root" value for the USER environment variable.

• Update to 2:2.5-3ubuntu4.1

CVE-2023-40303

GNU inetutils before 2.5 may allow privilege escalation because of unchecked return values of set*id() family functions in ftpd, rcp, rlogin, rsh, rshd, and uucpd. This is, for example, relevant if the setuid system call fails when a process is trying to drop privileges before letting an ordinary user control the activities of the process.

• Update to 2:2.4-3ubuntu1