The upstream bug report describes this issue as follows:A flaw found in the Linux Kernel in RDS protocol. The rds_rm_zerocopy_callback uses list_entry on the head of a list causing a type confusion. Local user can trigger this with rds_message_put. Type confusion leads to `struct rds_msg_zcopy_info *info` actually points to something else that is potentially controlled by local user. It is known ...