Several vulnerabilities have been discovered in the chromium web browser. CVE-2021-21148 Mattias Buelens discovered a buffer overflow issue in the v8 javascript library. CVE-2021-21149 Ryoya Tsukasaki discovered a stack overflow issue in the Data Transfer implementation. CVE-2021-21150 Woojin Oh discovered a use-after-free issue in the file downloader. CVE-2021-21151 Khalil Zhani discovered a use-after-free issue in the payments system. CVE-2021-21152 A buffer overflow was discovered in media handling. CVE-2021-21153 Jan Ruge discovered a stack overflow issue in the GPU process. CVE-2021-21154 Abdulrahman Alqabandi discovered a buffer overflow issue in the Tab Strip implementation. CVE-2021-21155 Khalil Zhani discovered a buffer overflow issue in the Tab Strip implementation. CVE-2021-21156 Sergei Glazunov discovered a buffer overflow issue in the v8 javascript library. CVE-2021-21157 A use-after-free issue was discovered in the Web Sockets implementation.