fixes a security vulnerability in slice provider Bug: 138441555 Test: Manual Change-Id: Ib1b4fba54ebd3599fe11021d21dc9b09d34e8965 Merged-In: Ib1b4fba54ebd3599fe11021d21dc9b09d34e8965 (cherry picked from commit 2b415a4c4465a6294e51ad1a8fcf2e6c1497853b) (cherry picked from commit a6364d92edafd79006da671c5d476de77439e45c)