This bug raises some awkward questions. For example, why was a time counter set for 40K power-on hours? What did the designer intend to happen at this milestone? Was the SSD supposed to go into some kind of "end-of-life" mode?
AFAICT, both the Dell and HP SSDs are OEM versions of SanDisk's Lightning Eco Gen. II SAS SSDs. WD/SanDisk has issued its own patch, but it's not easy to find. In fact when I examined the payload, I discovered numerous references to Huawei. This led me to wonder whether Huawei was the actual manufacturer, or perhaps Huawei was an OEM and WD mistakenly released Huawei OEM firmware into its retail channel.
Even stranger is the 32768 hour bug which affects HP OEM SSDs but not Dell or Samsung (who is the original manufacturer):