Linux Siemens R3964 Line Discipline Missing Lock

Linux: missing locking in Siemens R3964 line discipline The Siemens R3964 line discipline code in drivers/tty/nr3964.c has a few races around its ioctl handler; for example, the handler for R3964ENABLESIGNALS just allocates and deletes elements in a linked list with zero locking. This code is...