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be441b |
diff --git a/unix/x0vncserver/Image.cxx b/unix/x0vncserver/Image.cxx
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be441b |
index f998c6a..fb9dbd4 100644
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be441b |
--- a/unix/x0vncserver/Image.cxx
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be441b |
+++ b/unix/x0vncserver/Image.cxx
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be441b |
@@ -80,6 +80,14 @@ void Image::Init(int width, int height)
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be441b |
xim = XCreateImage(dpy, vis, DefaultDepth(dpy, DefaultScreen(dpy)),
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be441b |
ZPixmap, 0, 0, width, height, BitmapPad(dpy), 0);
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be441b |
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be441b |
+ if (xim->bytes_per_line <= 0 ||
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be441b |
+ xim->height <= 0 ||
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be441b |
+ xim->height >= INT_MAX / xim->bytes_per_line) {
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be441b |
+ vlog.error("Invalid display size");
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be441b |
+ XDestroyImage(xim);
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be441b |
+ exit(1);
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be441b |
+ }
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be441b |
+
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be441b |
xim->data = (char *)malloc(xim->bytes_per_line * xim->height);
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be441b |
if (xim->data == NULL) {
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be441b |
vlog.error("malloc() failed");
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be441b |
@@ -256,6 +264,17 @@ void ShmImage::Init(int width, int height, const XVisualInfo *vinfo)
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be441b |
return;
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be441b |
}
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be441b |
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be441b |
+ if (xim->bytes_per_line <= 0 ||
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be441b |
+ xim->height <= 0 ||
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be441b |
+ xim->height >= INT_MAX / xim->bytes_per_line) {
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be441b |
+ vlog.error("Invalid display size");
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be441b |
+ XDestroyImage(xim);
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be441b |
+ xim = NULL;
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be441b |
+ delete shminfo;
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be441b |
+ shminfo = NULL;
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be441b |
+ return;
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be441b |
+ }
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be441b |
+
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be441b |
shminfo->shmid = shmget(IPC_PRIVATE,
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be441b |
xim->bytes_per_line * xim->height,
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be441b |
IPC_CREAT|0777);
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be441b |
diff --git a/vncviewer/PlatformPixelBuffer.cxx b/vncviewer/PlatformPixelBuffer.cxx
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be441b |
index a2b506d..9266d9f 100644
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be441b |
--- a/vncviewer/PlatformPixelBuffer.cxx
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be441b |
+++ b/vncviewer/PlatformPixelBuffer.cxx
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be441b |
@@ -49,6 +49,15 @@ PlatformPixelBuffer::PlatformPixelBuffer(int width, int height) :
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be441b |
if (!xim)
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be441b |
throw rdr::Exception("XCreateImage");
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be441b |
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be441b |
+ if (xim->bytes_per_line <= 0 ||
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be441b |
+ xim->height <= 0 ||
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be441b |
+ xim->height >= INT_MAX / xim->bytes_per_line) {
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be441b |
+ if (xim)
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be441b |
+ XDestroyImage(xim);
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be441b |
+ xim = NULL;
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be441b |
+ throw rdr::Exception("Invalid display size");
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be441b |
+ }
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be441b |
+
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be441b |
xim->data = (char*)malloc(xim->bytes_per_line * xim->height);
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be441b |
if (!xim->data)
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be441b |
throw rdr::Exception("malloc");
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be441b |
@@ -152,6 +161,16 @@ bool PlatformPixelBuffer::setupShm()
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be441b |
if (!xim)
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be441b |
goto free_shminfo;
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be441b |
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be441b |
+ if (xim->bytes_per_line <= 0 ||
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|
be441b |
+ xim->height <= 0 ||
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|
be441b |
+ xim->height >= INT_MAX / xim->bytes_per_line) {
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|
be441b |
+ XDestroyImage(xim);
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|
be441b |
+ xim = NULL;
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|
be441b |
+ delete shminfo;
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|
be441b |
+ shminfo = NULL;
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|
be441b |
+ throw rdr::Exception("Invalid display size");
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|
be441b |
+ }
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|
be441b |
+
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|
|
be441b |
shminfo->shmid = shmget(IPC_PRIVATE,
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|
|
be441b |
xim->bytes_per_line * xim->height,
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be441b |
IPC_CREAT|0600);
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