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Mount x11_socket as read-only #2315

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Erick555 opened this issue Nov 14, 2018 · 0 comments
Closed

Mount x11_socket as read-only #2315

Erick555 opened this issue Nov 14, 2018 · 0 comments

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@Erick555
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Flatpak version

Flatpak 1.0.5

Description of the problem

Currently x11_socket is bind-mounted from host systems as read-write. It should be possible to bind-mount it as read-only instead as it doesn't prevent using connect() syscall on socket. In fact systemd-nspawn will refuse to bind-mount x11_socket as read-write.

Steps to reproduce

$ flatpak run --socket=x11 --command=sh org.freedesktop.Platform/x86_64/18.08
$ ls -AnG /tmp/.X11-unix/
srwxrwxrwx 1 0 0 Nov 14 09:14 X99
@Erick555 Erick555 mentioned this issue Nov 14, 2018
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alexlarsson pushed a commit that referenced this issue Nov 16, 2018
@Erick555 @alexlarsson
Mount x11_socket as read-only
d830760 
Fixes #2315
Closes: #2316
Approved by: alexlarsson

(cherry picked from commit 0af7179)
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@Erick555