Young Buck's intellectual property is being sold as part of the rapper's Chapter 7 bankruptcy liquidation. Buck was unable to come up with a business plan to clear his debt, so trustee Jeanne Burton is working to sell off his assets.
Court documents indicate that that includes "trademarks and copyrights, all masters, compositions, royalties, rights and licenses owned by debtor and all rights of publicity owned by debtor."
Ownership of Buck's masters could give whomever bids and lands them the ability to re-release songs and license the content for third-party use i.e. advertising. Buck will also likely lose his royalties on the songs.