Bug#1140487: tmux: CVE-2026-11623

[Sylvain Beucler]

Hi,

According to:
https://ubuntu.com/security/CVE-2026-11623
this was introduced in v3.6a.

Also this requires SIXEL support which was introduced in v3.4.

Cheers!
Sylvain Beucler
Debian LTS Team