CVE-2021-44717

When a Go program running on a Unix system is out of file descriptors and calls syscall.ForkExec (including indirectly by using the os/exec package), syscall.ForkExec can close file descriptor 0 as it fails. If this happens (or can be provoked) repeatedly, it can result in misdirected I/O such as writing network traffic intended for one connection to a different connection, or content intended for one file to a different one. For users who cannot immediately update to the new release, the bug can be mitigated by raising the per-process file descriptor limit.

Go versiones anteriores a 1.16.12 y versiones 1.17.x anteriores a 1.17.5 en UNIX, permite operaciones de escritura en un archivo no deseado o en una conexión de red no deseada como consecuencia de un cierre erróneo del descriptor de archivo 0 tras el agotamiento del descriptor de archivo.