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Michael Brown 632e57f0f3 [efi] Do not copy garbage bytes into SNP device path MAC address 
The SNP device path includes the network device's MAC address within
the MAC_ADDR_DEVICE_PATH.MacAddress field.  We check that the
link-layer address will fit within this field, and then perform the
copy using the length of the destination buffer.

At 32 bytes, the MacAddress field is actually larger than the current
maximum iPXE link-layer address.  The copy therefore overflows the
source buffer, resulting in trailing garbage bytes being appended to
the device path's MacAddress.  This is invisible in debug messages,
since the DevicePathToText protocol will render only the length
implied by the interface type.

Fix by copying only the actual length of the link-layer address (which
we have already verified will not overflow the destination buffer).

Debugged-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
 		2016-06-22 09:07:20 +01:00
contrib [errdb] Strip platform error code for non-platform-generated errors 2013-04-29 15:36:32 +01:00
src [efi] Do not copy garbage bytes into SNP device path MAC address 2016-06-22 09:07:20 +01:00
COPYING [legal] Update GPLv2 licence text 2015-02-26 17:59:53 +00:00
COPYING.GPLv2 [legal] Update GPLv2 licence text 2015-02-26 17:59:53 +00:00
COPYING.UBDL [legal] Add support for the Unmodified Binary Distribution Licence 2015-03-02 12:07:14 +00:00
README [doc] Re-add README file 2010-05-28 00:03:47 +01:00

README 

iPXE README File

Quick start guide:

   cd src
   make

For any more detailed instructions, see http://ipxe.org