https://wccftech.com/cod-modern-warfare-patch-december-11th/

A new Call of Duty: Modern Warfare patch has been rolled out by Infinity Ward for all platforms.

The December 11 update for PC, PlayStation 4 and Xbox One is available now and offers general fixes across all platforms. Alongside fixes for various skins not appearing correctly in the game, the patch also addresses some exploits in Special Ops: Survival and fixes a bug where equipping the “Old Wounds” LMG could cause an error, kicking players out of the menu.