SYS1.LINKLIB in the LNKLST concatenation is APF-authorized by default. And, if you accept the default for the LNKAUTH system parameter (LNKAUTH=LNKLST) or specify this value through an IEASYSxx member or as a response to the ‘SPECIFY SYSTEM PARAMETERS’ message at IPL time, data sets that are concatenated to SYS1.LINKLIB by default (like SYS1.MIGLIB and SYS1.CSSLIB) are automatically APF-authorized when accessed as part of the LNKLST concatenation.
For more information, see the description of the LNKAUTH parameter in IEASYSxx (system parameter list).