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-rw-r--r--debian/patches/1019-dix-integer-overflow-in-ProcPutImage-CVE-2014-8.full.patch21
1 files changed, 16 insertions, 5 deletions
diff --git a/debian/patches/1019-dix-integer-overflow-in-ProcPutImage-CVE-2014-8.full.patch b/debian/patches/1019-dix-integer-overflow-in-ProcPutImage-CVE-2014-8.full.patch
index 05d491941..6d48ceed1 100644
--- a/debian/patches/1019-dix-integer-overflow-in-ProcPutImage-CVE-2014-8.full.patch
+++ b/debian/patches/1019-dix-integer-overflow-in-ProcPutImage-CVE-2014-8.full.patch
@@ -12,6 +12,9 @@ pixmap can overflow a 32-bit number, causing out-of-bounds memory writes
on 32-bit systems (since the length is stored in a long int variable).
v2: backport to nx-libs 3.6.x (Mike DePaulo)
+v3: port to NXdispatch.c rather than dispatch.c (Mike DePaulo)
+v4: backport v3 to nx-libs 3.5.0.x (Mihai Moldovan)
+
Reported-by: Ilja Van Sprundel <ivansprundel@ioactive.com>
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
@@ -22,8 +25,6 @@ Conflicts:
nx-X11/programs/Xserver/dix/dispatch.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
-diff --git a/nx-X11/programs/Xserver/dix/dispatch.c b/nx-X11/programs/Xserver/dix/dispatch.c
-index 6941456..5ad2f5a 100644
--- a/nx-X11/programs/Xserver/dix/dispatch.c
+++ b/nx-X11/programs/Xserver/dix/dispatch.c
@@ -2071,7 +2071,9 @@ ProcPutImage(register ClientPtr client)
@@ -37,6 +38,16 @@ index 6941456..5ad2f5a 100644
if (((((lengthProto * stuff->height) + (unsigned)3) >> 2) +
(sizeof(xPutImageReq) >> 2)) != client->req_len)
return BadLength;
---
-2.1.4
-
+--- a/nx-X11/programs/Xserver/hw/nxagent/NXdispatch.c
++++ b/nx-X11/programs/Xserver/hw/nxagent/NXdispatch.c
+@@ -2630,7 +2630,9 @@ ProcPutImage(register ClientPtr client)
+
+ tmpImage = (char *)&stuff[1];
+ lengthProto = length;
+-
++ if (lengthProto >= (INT32_MAX / stuff->height))
++ return BadLength;
++
+ if (((((lengthProto * stuff->height) + (unsigned)3) >> 2) +
+ (sizeof(xPutImageReq) >> 2)) != client->req_len)
+ return BadLength;