==========================================================================
The checksum's (found through sum -r) of the files that you have received
(other than this README) are as follows:

10728     97 patchSG0004915.idb
36117   1747 patchSG0004915.tooltalk_eoe_sw64
26425   1718 patchSG0004915.tooltalk_eoe_sw32
40433   2974 patchSG0004915.tooltalk_dev_sw64
14189   2907 patchSG0004915.tooltalk_dev_sw32
08936   3420 patchSG0004915.tooltalk_eoe_sw
29115   1142 patchSG0004915.tooltalk_dev_man
58327     54 patchSG0004915.tooltalk_eoe_man
14046   1870 patchSG0004915.tooltalk_dev_sw
41046     19 patchSG0004915
==========================================================================



				  - 1 -



       1.  Patch_SG0004915_Release_Note

       This release note describes patch SG0004915 to IRIX 6.5.

       Patch SG0004915 replaces	patches	SG0003511, SG0004669, and
       SG0004869.

       1.1  Supported_Hardware_Platforms

       This patch contains bug fixes for all hardware
       configurations.


       1.2  Supported_Software_Platforms

       This patch contains bug fixes for ToolTalk (1.3)	on a system
       running IRIX 6.5.13, 6.5.14, 6.5.15, 6.5.16 or 6.5.17.  The
       software	cannot be installed on other configurations.

       1.3  Bugs_Fixed_by_Patch_SG0004915

       This patch contains fixes for the following bugs	in IRIX
       6.5.  Bug numbers from Silicon Graphics bug tracking system
       are included for	reference.

	Patch 4915:
	    Fixes:
		Bug #875945- Allow CDE 5.3 to be used on pre 6.5.18
	   systems
		Bug #773692- ToolTalk ttsession	uses weak RPC
	   authent. mechanism
	   Replaces and	rolls up:
	       Patch 4869, which fixes:
		   Bug #833473-	Format string vulnerability in
	    ToolTalk Server RPC
		   Bug #860031-	IRIX ToolTalk has new security
	    vulnerabilities$
		   Bug #861480-	IRIX ToolTalk has new security
	    vulnerabilities$
		   Bug #866829-	Exposure of xdr_array security
	    problem in tooltalk$
		   Bug #872674-	Tooltalk security patch	4669 breaks
	    on 6.5.17$
	    Replaces and rolls up:
		Patch 3511, which fixes:
		    Bug	#632028- Possible security hole	in ToolTalk
	     object database server















				  - 2 -



       1.4  Subsystems_Included_in_Patch_SG0004915

       This patch release includes these subsystems:

	  o patchSG0004915.tooltalk_dev_man.manpages

	  o patchSG0004915.tooltalk_dev_man.relnotes

	  o patchSG0004915.tooltalk_dev_sw.dev

	  o patchSG0004915.tooltalk_dev_sw.headers

	  o patchSG0004915.tooltalk_dev_sw32.dev

	  o patchSG0004915.tooltalk_dev_sw64.dev

	  o patchSG0004915.tooltalk_eoe_man.links

	  o patchSG0004915.tooltalk_eoe_man.manpages

	  o patchSG0004915.tooltalk_eoe_man.relnotes

	  o patchSG0004915.tooltalk_eoe_sw.runtime

	  o patchSG0004915.tooltalk_eoe_sw32.runtime

	  o patchSG0004915.tooltalk_eoe_sw64.runtime


       1.5  Installation_Instructions

       Because you want	to install only	the patches for	problems
       you have	encountered, patch software is not installed by
       default.	 After reading the descriptions	of the bugs fixed
       in this patch (see Section 1.3),	determine the patches that
       meet your specific needs.

       If, after reading Sections 1.1 and 1.2 of these release
       notes, you are unsure whether your hardware and software
       meet the	requirements for installing a particular patch,	run
       inst.  The inst program does not	allow you to install
       patches that are	incompatible with your hardware	or
       software.

       Patch software is installed like	any other Silicon Graphics
       software	product.  Follow the instructions in your Software
       Installation Administrator's Guide to bring up the miniroot
       form of the software installation tools.

       Follow these steps to select a patch for	installation:












				  - 3 -



	 1.  At	the Inst> prompt, type

	     install patchSGxxxxxxx

	     where xxxxxxx is the patch	number.

	 2.  Initiate the installation sequence. Type

	     Inst> go

	 3.  You may find that two patches have	been marked as
	     incompatible.  (The installation tools reject an
	     installation request if an	incompatibility	is
	     detected.)	 If this occurs, you must deselect one of
	     the patches.

	     Inst> keep	patchSGxxxxxxx

	     where xxxxxxx is the patch	number.

	 4.  After completing the installation process,	exit the
	     inst program by typing

	     Inst> quit



       1.6  Patch_Removal_Instructions

       To remove a patch, use the versions remove command as you
       would for any other software subsystem.	The removal process
       reinstates the original version of software unless you have
       specifically removed the	patch history from your	system.

       versions	remove patchSGxxxxxxx

       where xxxxxxx is	the patch number.

       To keep a patch but increase your disk space, use the
       versions	removehist command to remove the patch history.

       versions	removehist patchSGxxxxxxx

       where xxxxxxx is	the patch number.

       1.7  Known_Problems