Prevent out-of-bounds vector access

Bug: 230172711
Test: See bug for fuzzer testcase.
Test: atest CtsMiscMediaTestCases
Change-Id: I0c7a5940810d567c6bcb9045f35efb477437491a
Merged-In: I0c7a5940810d567c6bcb9045f35efb477437491a
(cherry picked from commit ba7d0869174bf07886a0df5f33f252511215e78b)