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run: Prevent TIOCLINUX ioctl, the same as TIOCSTI
The TIOCLINUX ioctl is only available on Linux virtual consoles such as /dev/tty1. It has several Linux-specific functions, one of which is a copy/paste operation which can be used for attacks similar to TIOCSTI. This vulnerability does not affect typical graphical terminal emulators such as xterm, gnome-terminal and Konsole, and Flatpak is primarily designed to be run from a Wayland or X11 graphical environment, so this is relatively unlikely to be a practical problem. CVE-2023-28100, GHSA-7qpw-3vjv-xrqp Resolves: GHSA-7qpw-3vjv-xrqp Signed-off-by: Simon McVittie <smcv@debian.org>
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