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-rw-r--r--debian/patches/1032-glx-Be-more-strict-about-rejecting-invalid-imag.full.patch163
1 files changed, 163 insertions, 0 deletions
diff --git a/debian/patches/1032-glx-Be-more-strict-about-rejecting-invalid-imag.full.patch b/debian/patches/1032-glx-Be-more-strict-about-rejecting-invalid-imag.full.patch
new file mode 100644
index 000000000..af577aaa9
--- /dev/null
+++ b/debian/patches/1032-glx-Be-more-strict-about-rejecting-invalid-imag.full.patch
@@ -0,0 +1,163 @@
+From cdf0c3e65670c797a4fd0617d44d2bdff4011815 Mon Sep 17 00:00:00 2001
+From: Adam Jackson <ajax@redhat.com>
+Date: Mon, 10 Nov 2014 12:13:37 -0500
+Subject: [PATCH 32/40] glx: Be more strict about rejecting invalid image sizes
+ [CVE-2014-8093 2/6]
+
+Before this we'd just clamp the image size to 0, which was just
+hideously stupid; if the parameters were such that they'd overflow an
+integer, you'd allocate a small buffer, then pass huge values into (say)
+ReadPixels, and now you're scribbling over arbitrary server memory.
+
+v2: backport to nx-libs 3.6.x (Mike DePaulo)
+
+Reviewed-by: Keith Packard <keithp@keithp.com>
+Reviewed-by: Julien Cristau <jcristau@debian.org>
+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/singlepix.c | 14 +++++++-------
+ nx-X11/programs/Xserver/GL/glx/singlepixswap.c | 14 +++++++-------
+ 2 files changed, 14 insertions(+), 14 deletions(-)
+
+diff --git a/nx-X11/programs/Xserver/GL/glx/singlepix.c b/nx-X11/programs/Xserver/GL/glx/singlepix.c
+index 845c46a..be804d8 100644
+--- a/nx-X11/programs/Xserver/GL/glx/singlepix.c
++++ b/nx-X11/programs/Xserver/GL/glx/singlepix.c
+@@ -70,7 +70,7 @@ int __glXDisp_ReadPixels(__GLXclientState *cl, GLbyte *pc)
+ swapBytes = *(GLboolean *)(pc + 24);
+ lsbFirst = *(GLboolean *)(pc + 25);
+ compsize = __glReadPixels_size(format,type,width,height);
+- if (compsize < 0) compsize = 0;
++ if (compsize < 0) return BadLength;
+
+ glPixelStorei(GL_PACK_SWAP_BYTES, swapBytes);
+ glPixelStorei(GL_PACK_LSB_FIRST, lsbFirst);
+@@ -130,7 +130,7 @@ int __glXDisp_GetTexImage(__GLXclientState *cl, GLbyte *pc)
+ * are illegal, but then width, height, and depth would still be zero anyway.
+ */
+ compsize = __glGetTexImage_size(target,level,format,type,width,height,depth);
+- if (compsize < 0) compsize = 0;
++ if (compsize < 0) return BadLength;
+
+ glPixelStorei(GL_PACK_SWAP_BYTES, swapBytes);
+ __GLX_GET_ANSWER_BUFFER(answer,cl,compsize,1);
+@@ -227,7 +227,7 @@ int __glXDisp_GetSeparableFilter(__GLXclientState *cl, GLbyte *pc)
+ compsize = __glGetTexImage_size(target,1,format,type,width,1,1);
+ compsize2 = __glGetTexImage_size(target,1,format,type,height,1,1);
+
+- if (compsize < 0) compsize = 0;
++ if (compsize < 0) return BadLength;
+ if (compsize2 < 0) compsize2 = 0;
+ compsize = __GLX_PAD(compsize);
+ compsize2 = __GLX_PAD(compsize2);
+@@ -291,7 +291,7 @@ int __glXDisp_GetConvolutionFilter(__GLXclientState *cl, GLbyte *pc)
+ * are illegal, but then width and height would still be zero anyway.
+ */
+ compsize = __glGetTexImage_size(target,1,format,type,width,height,1);
+- if (compsize < 0) compsize = 0;
++ if (compsize < 0) return BadLength;
+
+ glPixelStorei(GL_PACK_SWAP_BYTES, swapBytes);
+ __GLX_GET_ANSWER_BUFFER(answer,cl,compsize,1);
+@@ -346,7 +346,7 @@ int __glXDisp_GetHistogram(__GLXclientState *cl, GLbyte *pc)
+ * are illegal, but then width would still be zero anyway.
+ */
+ compsize = __glGetTexImage_size(target,1,format,type,width,1,1);
+- if (compsize < 0) compsize = 0;
++ if (compsize < 0) return BadLength;
+
+ glPixelStorei(GL_PACK_SWAP_BYTES, swapBytes);
+ __GLX_GET_ANSWER_BUFFER(answer,cl,compsize,1);
+@@ -389,7 +389,7 @@ int __glXDisp_GetMinmax(__GLXclientState *cl, GLbyte *pc)
+ reset = *(GLboolean *)(pc + 13);
+
+ compsize = __glGetTexImage_size(target,1,format,type,2,1,1);
+- if (compsize < 0) compsize = 0;
++ if (compsize < 0) return BadLength;
+
+ glPixelStorei(GL_PACK_SWAP_BYTES, swapBytes);
+ __GLX_GET_ANSWER_BUFFER(answer,cl,compsize,1);
+@@ -436,7 +436,7 @@ int __glXDisp_GetColorTable(__GLXclientState *cl, GLbyte *pc)
+ * are illegal, but then width would still be zero anyway.
+ */
+ compsize = __glGetTexImage_size(target,1,format,type,width,1,1);
+- if (compsize < 0) compsize = 0;
++ if (compsize < 0) return BadLength;
+
+ glPixelStorei(GL_PACK_SWAP_BYTES, swapBytes);
+ __GLX_GET_ANSWER_BUFFER(answer,cl,compsize,1);
+diff --git a/nx-X11/programs/Xserver/GL/glx/singlepixswap.c b/nx-X11/programs/Xserver/GL/glx/singlepixswap.c
+index ff68ece..cdc6f16 100644
+--- a/nx-X11/programs/Xserver/GL/glx/singlepixswap.c
++++ b/nx-X11/programs/Xserver/GL/glx/singlepixswap.c
+@@ -79,7 +79,7 @@ int __glXDispSwap_ReadPixels(__GLXclientState *cl, GLbyte *pc)
+ swapBytes = *(GLboolean *)(pc + 24);
+ lsbFirst = *(GLboolean *)(pc + 25);
+ compsize = __glReadPixels_size(format,type,width,height);
+- if (compsize < 0) compsize = 0;
++ if (compsize < 0) return BadLength;
+
+ glPixelStorei(GL_PACK_SWAP_BYTES, !swapBytes);
+ glPixelStorei(GL_PACK_LSB_FIRST, lsbFirst);
+@@ -148,7 +148,7 @@ int __glXDispSwap_GetTexImage(__GLXclientState *cl, GLbyte *pc)
+ * are illegal, but then width, height, and depth would still be zero anyway.
+ */
+ compsize = __glGetTexImage_size(target,level,format,type,width,height,depth);
+- if (compsize < 0) compsize = 0;
++ if (compsize < 0) return BadLength;
+
+ glPixelStorei(GL_PACK_SWAP_BYTES, !swapBytes);
+ __GLX_GET_ANSWER_BUFFER(answer,cl,compsize,1);
+@@ -257,7 +257,7 @@ int __glXDispSwap_GetSeparableFilter(__GLXclientState *cl, GLbyte *pc)
+ compsize = __glGetTexImage_size(target,1,format,type,width,1,1);
+ compsize2 = __glGetTexImage_size(target,1,format,type,height,1,1);
+
+- if (compsize < 0) compsize = 0;
++ if (compsize < 0) return BadLength;
+ if (compsize2 < 0) compsize2 = 0;
+ compsize = __GLX_PAD(compsize);
+ compsize2 = __GLX_PAD(compsize2);
+@@ -328,7 +328,7 @@ int __glXDispSwap_GetConvolutionFilter(__GLXclientState *cl, GLbyte *pc)
+ * are illegal, but then width and height would still be zero anyway.
+ */
+ compsize = __glGetTexImage_size(target,1,format,type,width,height,1);
+- if (compsize < 0) compsize = 0;
++ if (compsize < 0) return BadLength;
+
+ glPixelStorei(GL_PACK_SWAP_BYTES, !swapBytes);
+ __GLX_GET_ANSWER_BUFFER(answer,cl,compsize,1);
+@@ -390,7 +390,7 @@ int __glXDispSwap_GetHistogram(__GLXclientState *cl, GLbyte *pc)
+ * are illegal, but then width would still be zero anyway.
+ */
+ compsize = __glGetTexImage_size(target,1,format,type,width,1,1);
+- if (compsize < 0) compsize = 0;
++ if (compsize < 0) return BadLength;
+
+ glPixelStorei(GL_PACK_SWAP_BYTES, !swapBytes);
+ __GLX_GET_ANSWER_BUFFER(answer,cl,compsize,1);
+@@ -439,7 +439,7 @@ int __glXDispSwap_GetMinmax(__GLXclientState *cl, GLbyte *pc)
+ reset = *(GLboolean *)(pc + 13);
+
+ compsize = __glGetTexImage_size(target,1,format,type,2,1,1);
+- if (compsize < 0) compsize = 0;
++ if (compsize < 0) return BadLength;
+
+ glPixelStorei(GL_PACK_SWAP_BYTES, !swapBytes);
+ __GLX_GET_ANSWER_BUFFER(answer,cl,compsize,1);
+@@ -491,7 +491,7 @@ int __glXDispSwap_GetColorTable(__GLXclientState *cl, GLbyte *pc)
+ * are illegal, but then width would still be zero anyway.
+ */
+ compsize = __glGetTexImage_size(target,1,format,type,width,1,1);
+- if (compsize < 0) compsize = 0;
++ if (compsize < 0) return BadLength;
+
+ glPixelStorei(GL_PACK_SWAP_BYTES, !swapBytes);
+ __GLX_GET_ANSWER_BUFFER(answer,cl,compsize,1);
+--
+2.1.4
+