A mandatory update for Counter-Strike: Source, Day of Defeat: Source, Half-Life Deathmatch: Source, Half-Life 2: Deathmatch, as well as the Source SDK Base 2013 beta branch has been made available. The patch notes are below.

• Fixed a security issue related to the file system (thanks to Simon Pinfold for this report)
• Fixed mp3 sounds causing occasional hitching and framerate stuttering
• Fixed OS X players being limited to medium texture quality
• Fixed maps compiled with static prop lighting causing crashes for players on medium or low texture quality
• [SDK] Fixed steam.inf not being loaded from the base directory for SDK mods
• [CS:S] Fixed server crash when running with 64 players plus SourceTV

The following fixes were already included in the previous update for Half-Life 2: Deathmatch:

• Fixed ent_teleport causing a crash when issued by the server
• Fixed buildcubemaps command not working for maps that already have cubemaps embedded
• Fixed -buildcubemaps command line option generating black non-HDR cubemaps