Updates to Counter-Strike: Source have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

Counter-Strike: Source

• Added a new server ConVar "sv_competitive_minspec" that enforces the following restrictions on clients when set to 1:
  
  • r_drawdetailprops 1
    
  • r_staticprop_lod (-1 to 3)
    
  • fps_max minimum 60 (or 0)
    
  • cl_detailfade minimum 400
    
  • cl_detaildist minimum 1200
    
  • cl_interp (0 to 0.031)
    
  • cl_interp_ratio (1 to 2)
    
• Fixed ragdolls popping when using mp_fadetoblack 1
  
• Fixed a buffer overrun exploit that could be used to attack/crash servers.
  
• Fixed a crash at startup when no sound emitter scripts were loaded.
  
• Fixed a crash that could happen if a custom model was loaded with missing materials.
  
• Fixed a crashed related to alt-tab.
  
• Fixed a potential crash in the shaders.
  
• Fixed a crash when running custom maps with missing model files
  
• Removed the client console commands "mat_supress" and "mat_debug"