In src/libs/zbxcommon/str.c in zbx_strarr_init() we have char ***arr and

*arr = zbx_malloc(*arr, sizeof(char **));

Similar situation in zbx_strarr_add():

*arr = zbx_realloc(*arr, sizeof(char **) * (i + 2));

Type of *arr is char ** and it points to char *. Therefore sizeof(char **) should be replaced with sizeof(char *).

CID 118948 and CID 118911.