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| author | Christopher Faylor <me@cgf.cx> | 2003-09-17 01:15:56 +0000 |
|---|---|---|
| committer | Christopher Faylor <me@cgf.cx> | 2003-09-17 01:15:56 +0000 |
| commit | deb648cc8b95ec4b7a5b604d958abd338347811f (patch) | |
| tree | a0ca911611ebeb6b0b74ec3cbe09dfd230af5380 /winsup/cygwin/sigproc.cc | |
| parent | 1498189ca897347251470f3dd35e97d2f20f0f4b (diff) | |
| download | cygnal-deb648cc8b95ec4b7a5b604d958abd338347811f.tar.gz cygnal-deb648cc8b95ec4b7a5b604d958abd338347811f.tar.bz2 cygnal-deb648cc8b95ec4b7a5b604d958abd338347811f.zip | |
* pinfo.h (winpids::pid_access): New element.
(winpids::winpids): Rejigger to set pinfo_access.
* pinfo.cc (winpids::add): Try to open shared memory region with supplied
pinfo_access first, then default to readonly.
* fhandler_termios.cc (tty_min::kill_pgrp): When getting list of pids to work
with, suggest opening with PID_MAP_RW.
* signal.cc (kill_pgrp): Ditto.
* sigproc.cc (sig_send): Perform a write check on todo prior to attempting to
increment it. Return EACCES if we can't write to it.
Diffstat (limited to 'winsup/cygwin/sigproc.cc')
| -rw-r--r-- | winsup/cygwin/sigproc.cc | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/winsup/cygwin/sigproc.cc b/winsup/cygwin/sigproc.cc index 795c7f3ef..dff073049 100644 --- a/winsup/cygwin/sigproc.cc +++ b/winsup/cygwin/sigproc.cc @@ -725,6 +725,11 @@ sig_send (_pinfo *p, int sig, DWORD ebp, bool exception) else if ((thiscatch = getevent (p, "sigcatch"))) { todo = p->getsigtodo (sig); + if (IsBadWritePtr (todo, sizeof (*todo))) + { + set_errno (EACCES); + goto out; + } issem = false; } else |