default or selected kernelversion does not have config value CONFIG_CC_HAS_AUTO_VAR_INIT.
Result is shown for kernelversion 6.9.8

CONFIG_CC_HAS_AUTO_VAR_INIT (not configurable)

configname: CONFIG_CC_HAS_AUTO_VAR_INIT

Linux Kernel Configuration
└─>Security options
└─>Kernel hardening options
└─>Memory initialization
└─>CC_HAS_AUTO_VAR_INIT
In linux kernel since version 5.2 (release Date: 2019-07-07)