As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: FLIGHT ATTENDANT REPORTED DIRTY SOCK SMELL IN THE DESCENT FROM 10000 FEET TO LANDING FROM MID CABIN TO THE AFT GALLEY. MAINTENANCE REPLACED THE APU LUBE MODULE CAP VALVE PER CMM 49-90-57. A SATISFACTORY LEAK / OPERATIONAL CHECK WAS ACCOMPLISHED.