Files
xserver/xkb
Andreas Wettstein 3578cc3c2e xkb: Do not use base group as an array index.
The base group is not brought into range and, therefore, using it as an array
index crashed the X server.  Also, at this place, we should ignore locked
groups, but not latched groups.  Therefore, use sum of base and latched groups,
brought into range.

Reproducible with:
key <FK07> {
    type= "ONE_LEVEL",
    symbols[Group1]= [              NoSymbol ],
    actions[Group1]= [ LatchGroup(group=-1, clearLocks) ]
};

And hitting F7 will exceed the group level and access arbitrary memory.

Signed-off-by: Andreas Wettstein <wettstein509@solnet.ch>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2013-01-09 11:23:12 +10:00
..
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The X server uses this directory to store the compiled version of the
current keymap and/or any scratch keymaps used by clients.  The X server
or some other tool might destroy or replace the files in this directory,
so it is not a safe place to store compiled keymaps for long periods of
time.  The default keymap for any server is usually stored in:
     X<num>-default.xkm
where <num> is the display number of the server in question, which makes
it possible for several servers *on the same host* to share the same 
directory.

Unless the X server is modified, sharing this directory between servers on
different hosts could cause problems.