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Bad reference counting in the context of accept_ice_connection() in gsm-xsmp-server.c in old versions of gnome-session up until version 2.29.92 allows a local attacker to establish ICE connections to gnome-session with invalid authentication data (an invalid magic cookie). Each failed authentication attempt will leak a file descriptor in gnome-session. When the maximum number of file descriptors is exhausted in the gnome-session process, it will enter an infinite loop trying to communicate without success, consuming 100% of the CPU. The graphical session associated with the gnome-session process will stop working correctly, because communication with gnome-session is no longer possible.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade gnome-session | Jul 30, 2024 | Jul 11, 2017 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Jul 11, 2017 |
| Suse | — | Upgrade gnome-session-langUpgrade gnome-session | Aug 16, 2017 | Jul 11, 2017 |
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