Re: [PATCH v2 1/3] tools: hv: fcopy_daemon: Check buffer limits

2014-11-07 Thread Greg KH
On Tue, Oct 21, 2014 at 04:46:58PM +0200, Matej Mužila wrote: From: Matej Mužila mmuz...@redhat.com Check if cpmsg-size is in limits of DATA_FRAGMENT Signed-off-by: Matej Mužila mmuz...@redhat.com --- If corrupted data are read from /dev/vmbus/hv_fcopy, pwrite can read from memory

[PATCH v2 1/3] tools: hv: fcopy_daemon: Check buffer limits

2014-10-21 Thread Matej Mužila
From: Matej Mužila mmuz...@redhat.com Check if cpmsg-size is in limits of DATA_FRAGMENT Signed-off-by: Matej Mužila mmuz...@redhat.com --- If corrupted data are read from /dev/vmbus/hv_fcopy, pwrite can read from memory outside of the buffer (defined at line 138). Added check. Changes made