A memory safety issue (UNKNOWN READ) has been reported in the kimageformats component, specifically in the function mc_chroma<unsigned short>. The issue was identified by OSS-Fuzz and involves a crash during inter prediction sample generation and prediction unit decoding. Multiple versions of kimageformats from 5.80.0 through 5.90.0-rc1 are affected. No CVSS score or detailed impact information is provided, and no public exploit or patch information is available.