Autzoo.856 net.v7bugs,NET.v7bugs utzoo!henry Wed Aug 5 21:27:30 1981 ioctl speed-code checking Nowhere in the V7 kernel does anything ever check that the speed codes handed to a tty ioctl are valid (i.e. in the range 0..15). Quite by accident, all this will do to a DH or a DZ is screw up the line in question. But there is obviously room for all sorts of trouble here. The simplest fix is to change the lines in dev/tty.c/ttioccomm(), about line 236, that read: tp->t_ispeed = iocb.ioc_ispeed; tp->t_ospeed = iocb.ioc_ospeed; to read: tp->t_ispeed = iocb.ioc_ispeed&017; tp->t_ospeed = iocb.ioc_ospeed&017; ----------------------------------------------------------------- gopher://quux.org/ conversion by John Goerzen of http://communication.ucsd.edu/A-News/ This Usenet Oldnews Archive article may be copied and distributed freely, provided: 1. There is no money collected for the text(s) of the articles. 2. The following notice remains appended to each copy: The Usenet Oldnews Archive: Compilation Copyright (C) 1981, 1996 Bruce Jones, Henry Spencer, David Wiseman.