Let be a finite field of order , where is a positive prime. For , let and be two copies of . To each -tuple of polynomials in , we consider the bipartite graph . The vertex set of is . The edge set of consists of satisfying where and . is called linearized Wenger graph when . In this paper, we determine the eigenvalues of linearized Wenger graph and their multiplicities in the case of , which is an open problem put forward by Cao et al. (2015).