From 9c3842a4f72b4cca28ac1d5c14441787c7dd6e6a Mon Sep 17 00:00:00 2001
From: Alan Coopersmith <alan.coopersmith@oracle.com>
Date: Sun, 26 Jan 2014 19:51:29 -0800
Subject: [PATCH 28/40] render: unvalidated lengths in Render extn. swapped
 procs [CVE-2014-8100 2/2]

v2: backport to nx-libs 3.6.x (Mike DePaulo)

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>

Conflicts:
	render/render.c
---
 nx-X11/programs/Xserver/render/render.c | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/nx-X11/programs/Xserver/render/render.c b/nx-X11/programs/Xserver/render/render.c
index ebbce81..eee21db 100644
--- a/nx-X11/programs/Xserver/render/render.c
+++ b/nx-X11/programs/Xserver/render/render.c
@@ -2014,6 +2014,7 @@ SProcRenderQueryVersion (ClientPtr client)
 {
     register int n;
     REQUEST(xRenderQueryVersionReq);
+    REQUEST_SIZE_MATCH(xRenderQueryVersionReq);
 
     swaps(&stuff->length, n);
     swapl(&stuff->majorVersion, n);
@@ -2026,6 +2027,7 @@ SProcRenderQueryPictFormats (ClientPtr client)
 {
     register int n;
     REQUEST(xRenderQueryPictFormatsReq);
+    REQUEST_SIZE_MATCH(xRenderQueryPictFormatsReq);
     swaps(&stuff->length, n);
     return (*ProcRenderVector[stuff->renderReqType]) (client);
 }
@@ -2035,6 +2037,7 @@ SProcRenderQueryPictIndexValues (ClientPtr client)
 {
     register int n;
     REQUEST(xRenderQueryPictIndexValuesReq);
+    REQUEST_AT_LEAST_SIZE(xRenderQueryPictIndexValuesReq);
     swaps(&stuff->length, n);
     swapl(&stuff->format, n);
     return (*ProcRenderVector[stuff->renderReqType]) (client);
@@ -2051,6 +2054,7 @@ SProcRenderCreatePicture (ClientPtr client)
 {
     register int n;
     REQUEST(xRenderCreatePictureReq);
+    REQUEST_AT_LEAST_SIZE(xRenderCreatePictureReq);
     swaps(&stuff->length, n);
     swapl(&stuff->pid, n);
     swapl(&stuff->drawable, n);
@@ -2065,6 +2069,7 @@ SProcRenderChangePicture (ClientPtr client)
 {
     register int n;
     REQUEST(xRenderChangePictureReq);
+    REQUEST_AT_LEAST_SIZE(xRenderChangePictureReq);
     swaps(&stuff->length, n);
     swapl(&stuff->picture, n);
     swapl(&stuff->mask, n);
@@ -2077,6 +2082,7 @@ SProcRenderSetPictureClipRectangles (ClientPtr client)
 {
     register int n;
     REQUEST(xRenderSetPictureClipRectanglesReq);
+    REQUEST_AT_LEAST_SIZE(xRenderSetPictureClipRectanglesReq);
     swaps(&stuff->length, n);
     swapl(&stuff->picture, n);
     SwapRestS(stuff);
@@ -2088,6 +2094,7 @@ SProcRenderFreePicture (ClientPtr client)
 {
     register int n;
     REQUEST(xRenderFreePictureReq);
+    REQUEST_SIZE_MATCH(xRenderFreePictureReq);
     swaps(&stuff->length, n);
     swapl(&stuff->picture, n);
     return (*ProcRenderVector[stuff->renderReqType]) (client);
@@ -2098,6 +2105,7 @@ SProcRenderComposite (ClientPtr client)
 {
     register int n;
     REQUEST(xRenderCompositeReq);
+    REQUEST_SIZE_MATCH(xRenderCompositeReq);
     swaps(&stuff->length, n);
     swapl(&stuff->src, n);
     swapl(&stuff->mask, n);
@@ -2118,6 +2126,7 @@ SProcRenderScale (ClientPtr client)
 {
     register int n;
     REQUEST(xRenderScaleReq);
+    REQUEST_SIZE_MATCH(xRenderScaleReq);
     swaps(&stuff->length, n);
     swapl(&stuff->src, n);
     swapl(&stuff->dst, n);
@@ -2223,6 +2232,7 @@ SProcRenderCreateGlyphSet (ClientPtr client)
 {
     register int n;
     REQUEST(xRenderCreateGlyphSetReq);
+    REQUEST_SIZE_MATCH(xRenderCreateGlyphSetReq);
     swaps(&stuff->length, n);
     swapl(&stuff->gsid, n);
     swapl(&stuff->format, n);
@@ -2234,6 +2244,7 @@ SProcRenderReferenceGlyphSet (ClientPtr client)
 {
     register int n;
     REQUEST(xRenderReferenceGlyphSetReq);
+    REQUEST_SIZE_MATCH(xRenderReferenceGlyphSetReq);
     swaps(&stuff->length, n);
     swapl(&stuff->gsid, n);
     swapl(&stuff->existing, n);
@@ -2245,6 +2256,7 @@ SProcRenderFreeGlyphSet (ClientPtr client)
 {
     register int n;
     REQUEST(xRenderFreeGlyphSetReq);
+    REQUEST_SIZE_MATCH(xRenderFreeGlyphSetReq);
     swaps(&stuff->length, n);
     swapl(&stuff->glyphset, n);
     return (*ProcRenderVector[stuff->renderReqType]) (client);
@@ -2259,6 +2271,7 @@ SProcRenderAddGlyphs (ClientPtr client)
     void    *end;
     xGlyphInfo *gi;
     REQUEST(xRenderAddGlyphsReq);
+    REQUEST_AT_LEAST_SIZE(xRenderAddGlyphsReq);
     swaps(&stuff->length, n);
     swapl(&stuff->glyphset, n);
     swapl(&stuff->nglyphs, n);
@@ -2295,6 +2308,7 @@ SProcRenderFreeGlyphs (ClientPtr client)
 {
     register int n;
     REQUEST(xRenderFreeGlyphsReq);
+    REQUEST_AT_LEAST_SIZE(xRenderFreeGlyphsReq);
     swaps(&stuff->length, n);
     swapl(&stuff->glyphset, n);
     SwapRestL(stuff);
@@ -2313,7 +2327,8 @@ SProcRenderCompositeGlyphs (ClientPtr client)
     int		size;
     
     REQUEST(xRenderCompositeGlyphsReq);
-    
+    REQUEST_AT_LEAST_SIZE(xRenderCompositeGlyphsReq);
+
     switch (stuff->renderReqType) {
     default:			    size = 1; break;
     case X_RenderCompositeGlyphs16: size = 2; break;
-- 
2.1.4