Left 4 Dead 2

An update has been released for Left 4 Dead 2. - Revised fix for Linux build including latest security patches.

An update has been released for Left 4 Dead 2. - Fixed several crashes and exploits reported via HackerOne.

An update has been released for Left 4 Dead 2. - Fixed a compatibility issue that was causing a crash on Linux clients.

An update has been released for Left 4 Dead 2. - Fixed exploits used to crash remote servers.

An update has been released for Left 4 Dead 2. - Fixed some exploits used to crash remote servers.

An update has been released for Left 4 Dead 2. - Fixed several crash and remote code execution exploits. - Fixed a crash on some NVIDIA graphics cards when shader detail is set to High.

An update has been released for Left 4 Dead 2. - Player connect message is no longer networked to clients, to prevent exposing player IP addresses.

An update has been released for Left 4 Dead 2: - Fixed a regression that blocked taking screenshots.

An update has been released for Left 4 Dead 2: - Fixed a memory leak exploit in lobby chat. - Prevent running arbitrary script code on a remote server. - Prevent a network exploit that gave the client access to server settings. - Implementation example for a new beta feature in Steam.

An update has been released for Left 4 Dead 2: - Fixed an exploit that could block a player from connecting to any game, whether online or local. - Fixed two exploits that used invalid content to crash the game or prevent it from loading. - Fixed a memory leak when rejecting invalid content.

An update has been released for Left 4 Dead 2: - Fixed a bug that prevented the community server list from appearing.

An update has been released for Left 4 Dead 2: - Fixed two exploits that could remotely crash servers. - Fixed music not playing at the main menu on Linux.

An update has been released for Left 4 Dead 2: - Fixed another exploit where malicious network packets could severely degrade server performance. - Fixed a client exploit that could cause long server stalls. - Fixed a potential crash if a Charger failed to return to valid nav for an extended period of time. - Fixed a rare hang from ray traces encountering NaN values.

An update has been released for Left 4 Dead 2: - Blocked an exploit that could forcibly disconnect a player from any server, even when playing a local game.

An update has been released for Left 4 Dead 2: - Fixed two exploits that could crash remote servers. - Fixed missing lobby state messages. - Fixed community server searches not always returning the full set of lowest-ping results.

An update has been released for Left 4 Dead 2: - Improved the reliability of "mm_dedicated_force_official_servers" to find the lowest ping server across the supplied IPs.

An update has been released for Left 4 Dead 2: - Fixed several matchmaking lobby exploits. - The cvar "mm_dedicated_force_servers" now only applies to lobbies with the "Best Available Dedicated" server type as originally intended - for all other lobby types the cvar is ignored. Lobby leaders who wish to force official dedicated server selection due to location or network issues should use the new

An update has been released for Left 4 Dead 2: - Fixed an exploit where reliable network fragments could stall out a server indefinitely. - Re-enabled uploads by default so sprays will work again.

An update has been released for Left 4 Dead 2: - Fixed a degenerate case where malformed network packets could delay processing the remainder of the stream, severely impacting server performance.