A security update has been released for all supported HHVM versions. Please
update to one of the following versions to get the update: 4.80.5
220.127.116.11.6 and 4.102.3 are also released for Debian 10 Buster and Ubuntu 18.04
Bionic, updating build system compatibility with those platforms.This security update addresses: CVE-2021-24036,
a remote code execution vulnerability in Folly’s IOBuf class
an issue in HHVM that could lead to specially crafted XBox request parameter
data being interpreted as other RPCServer commands.
HHVM (HipHop Virtual Machine)会将PHP代码转换成高级别的字节码（通常称为中间语言）。然后在运行时通过即时（JIT）编译器将这些字节码转换为x64的机器码