DescriptionIn tmux before version 3.1c the function input_csi_dispatch_sgr_colon() in file input.c contained a stack-based buffer-overflow that can be exploited by terminal output.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
tmux (PTS)stretch2.3-4fixed
bullseye, sid3.1c-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
tmuxsourcestretch(not affected)
tmuxsourcebuster(not affected)


[buster] - tmux <not-affected> (Vulnerable code introduced later)
[stretch] - tmux <not-affected> (Vulnerable code introduced later) (003: SECURITY FIX: October 29, 2020)
Introduced by: (2.9)
Fixed by:

Search for package or bug name: Reporting problems