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-rw-r--r--debian/patches/1036-glx-Integer-overflow-protection-for-non-generated-re.patch215
1 files changed, 215 insertions, 0 deletions
diff --git a/debian/patches/1036-glx-Integer-overflow-protection-for-non-generated-re.patch b/debian/patches/1036-glx-Integer-overflow-protection-for-non-generated-re.patch
new file mode 100644
index 000000000..742a8bdb4
--- /dev/null
+++ b/debian/patches/1036-glx-Integer-overflow-protection-for-non-generated-re.patch
@@ -0,0 +1,215 @@
+From ddb1235bc621d06bf28309be70c173ae06131edf Mon Sep 17 00:00:00 2001
+From: Adam Jackson <ajax@redhat.com>
+Date: Mon, 10 Nov 2014 12:13:42 -0500
+Subject: [PATCH 36/40] glx: Integer overflow protection for non-generated
+ render requests (v3) [CVE-2014-8093 5/6]
+
+v2:
+Fix constants in __glXMap2fReqSize (Michal Srb)
+Validate w/h/d for proxy targets too (Keith Packard)
+
+v3:
+Fix Map[12]Size to correctly reject order == 0 (Julien Cristau)
+
+v4: backport to nx-libs 3.6.x (Mike DePaulo)
+
+Reviewed-by: Keith Packard <keithp@keithp.com>
+Reviewed-by: Michal Srb <msrb@suse.com>
+Reviewed-by: Andy Ritger <aritger@nvidia.com>
+Signed-off-by: Adam Jackson <ajax@redhat.com>
+Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
+Signed-off-by: Fedora X Ninjas <x@fedoraproject.org>
+Signed-off-by: Dave Airlie <airlied@redhat.com>
+---
+ nx-X11/programs/Xserver/GL/glx/rensize.c | 68 +++++++++++++++++---------------
+ 1 file changed, 37 insertions(+), 31 deletions(-)
+
+diff --git a/nx-X11/programs/Xserver/GL/glx/rensize.c b/nx-X11/programs/Xserver/GL/glx/rensize.c
+index 7ab02d2..9bf0d00 100644
+--- a/nx-X11/programs/Xserver/GL/glx/rensize.c
++++ b/nx-X11/programs/Xserver/GL/glx/rensize.c
+@@ -167,16 +167,10 @@ int __glXTexEnvivReqSize(GLbyte *pc, Bool swap )
+ return __glXTexEnvfvReqSize( pc, swap );
+ }
+
+-static int Map1Size( GLint k, GLint order)
+-{
+- if (order <= 0 || k < 0) return -1;
+- return k * order;
+-}
+-
+ int __glXMap1dReqSize(GLbyte *pc, Bool swap )
+ {
+ GLenum target;
+- GLint order, k;
++ GLint order;
+
+ target = *(GLenum*) (pc + 16);
+ order = *(GLint*) (pc + 20);
+@@ -184,14 +178,15 @@ int __glXMap1dReqSize(GLbyte *pc, Bool swap )
+ target = SWAPL( target );
+ order = SWAPL( order );
+ }
+- k = __glMap1d_size( target );
+- return 8 * Map1Size( k, order );
++ if (order < 1)
++ return -1;
++ return safe_mul(8, safe_mul(__glMap1d_size(target), order));
+ }
+
+ int __glXMap1fReqSize(GLbyte *pc, Bool swap )
+ {
+ GLenum target;
+- GLint order, k;
++ GLint order;
+
+ target = *(GLenum *)(pc + 0);
+ order = *(GLint *)(pc + 12);
+@@ -199,20 +194,21 @@ int __glXMap1fReqSize(GLbyte *pc, Bool swap )
+ target = SWAPL( target );
+ order = SWAPL( order );
+ }
+- k = __glMap1f_size(target);
+- return 4 * Map1Size(k, order);
++ if (order < 1)
++ return -1;
++ return safe_mul(4, safe_mul(__glMap1f_size(target), order));
+ }
+
+ static int Map2Size(int k, int majorOrder, int minorOrder)
+ {
+- if (majorOrder <= 0 || minorOrder <= 0 || k < 0) return -1;
+- return k * majorOrder * minorOrder;
++ if (majorOrder < 1 || minorOrder < 1) return -1;
++ return safe_mul(k, safe_mul(majorOrder, minorOrder));
+ }
+
+ int __glXMap2dReqSize(GLbyte *pc, Bool swap )
+ {
+ GLenum target;
+- GLint uorder, vorder, k;
++ GLint uorder, vorder;
+
+ target = *(GLenum *)(pc + 32);
+ uorder = *(GLint *)(pc + 36);
+@@ -222,14 +218,13 @@ int __glXMap2dReqSize(GLbyte *pc, Bool swap )
+ uorder = SWAPL( uorder );
+ vorder = SWAPL( vorder );
+ }
+- k = __glMap2d_size( target );
+- return 8 * Map2Size( k, uorder, vorder );
++ return safe_mul(8, Map2Size(__glMap2d_size(target), uorder, vorder));
+ }
+
+ int __glXMap2fReqSize(GLbyte *pc, Bool swap )
+ {
+ GLenum target;
+- GLint uorder, vorder, k;
++ GLint uorder, vorder;
+
+ target = *(GLenum *)(pc + 0);
+ uorder = *(GLint *)(pc + 12);
+@@ -239,8 +234,7 @@ int __glXMap2fReqSize(GLbyte *pc, Bool swap )
+ uorder = SWAPL( uorder );
+ vorder = SWAPL( vorder );
+ }
+- k = __glMap2f_size( target );
+- return 4 * Map2Size( k, uorder, vorder );
++ return safe_mul(4, Map2Size(__glMap2f_size(target), uorder, vorder));
+ }
+
+ int __glXPixelMapfvReqSize(GLbyte *pc, Bool swap )
+@@ -315,13 +309,16 @@ int __glXImageSize( GLenum format, GLenum type, GLenum target,
+ GLint bytesPerElement, elementsPerGroup, groupsPerRow;
+ GLint groupSize, rowSize, padding, imageSize;
+
++ if (w == 0 || h == 0 || d == 0)
++ return 0;
++
+ if (w < 0 || h < 0 || d < 0 ||
+ (type == GL_BITMAP &&
+ (format != GL_COLOR_INDEX && format != GL_STENCIL_INDEX))) {
+ return -1;
+ }
+- if (w==0 || h==0 || d == 0) return 0;
+
++ /* proxy targets have no data */
+ switch( target ) {
+ case GL_PROXY_TEXTURE_1D:
+ case GL_PROXY_TEXTURE_2D:
+@@ -338,6 +335,12 @@ int __glXImageSize( GLenum format, GLenum type, GLenum target,
+ return 0;
+ }
+
++ /* real data has to have real sizes */
++ if (imageHeight < 0 || rowLength < 0 || skipImages < 0 || skipRows < 0)
++ return -1;
++ if (alignment != 1 && alignment != 2 && alignment != 4 && alignment != 8)
++ return -1;
++
+ if (type == GL_BITMAP) {
+ if (rowLength > 0) {
+ groupsPerRow = rowLength;
+@@ -345,11 +348,13 @@ int __glXImageSize( GLenum format, GLenum type, GLenum target,
+ groupsPerRow = w;
+ }
+ rowSize = (groupsPerRow + 7) >> 3;
++ if (rowSize < 0)
++ return -1;
+ padding = (rowSize % alignment);
+ if (padding) {
+ rowSize += alignment - padding;
+ }
+- return ((h + skipRows) * rowSize);
++ return safe_mul(safe_add(h, skipRows), rowSize);
+ } else {
+ switch(format) {
+ case GL_COLOR_INDEX:
+@@ -430,23 +435,25 @@ int __glXImageSize( GLenum format, GLenum type, GLenum target,
+ default:
+ return -1;
+ }
++ /* known safe by the switches above, not checked */
+ groupSize = bytesPerElement * elementsPerGroup;
+ if (rowLength > 0) {
+ groupsPerRow = rowLength;
+ } else {
+ groupsPerRow = w;
+ }
+- rowSize = groupsPerRow * groupSize;
++ if ((rowSize = safe_mul(groupsPerRow, groupSize)) < 0)
++ return -1;
+ padding = (rowSize % alignment);
+ if (padding) {
+ rowSize += alignment - padding;
+ }
+- if (imageHeight > 0) {
+- imageSize = (imageHeight + skipRows) * rowSize;
+- } else {
+- imageSize = (h + skipRows) * rowSize;
+- }
+- return ((d + skipImages) * imageSize);
++ if (imageHeight > 0)
++ h = imageHeight;
++ h = safe_add(h, skipRows);
++
++ imageSize = safe_mul(h, rowSize);
++ return safe_mul(safe_add(d, skipImages), imageSize);
+ }
+ }
+
+@@ -873,10 +880,9 @@ int __glXSeparableFilter2DReqSize(GLbyte *pc, Bool swap )
+ /* XXX Should rowLength be used for either or both image? */
+ image1size = __glXImageSize( format, type, 0, w, 1, 1,
+ 0, rowLength, 0, 0, alignment );
+- image1size = __GLX_PAD(image1size);
+ image2size = __glXImageSize( format, type, 0, h, 1, 1,
+ 0, rowLength, 0, 0, alignment );
+- return image1size + image2size;
++ return safe_add(safe_pad(image1size), image2size);
+
+ }
+
+--
+2.1.4
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-03 17:02:11 +0000