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-rw-r--r--src/XF86DGA2.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/src/XF86DGA2.c b/src/XF86DGA2.c
index 4d13677..9c656e6 100644
--- a/src/XF86DGA2.c
+++ b/src/XF86DGA2.c
@@ -250,9 +250,14 @@ Bool XDGAOpenFramebuffer(
return False;
}
- if(rep.length) {
- deviceName = Xmalloc(rep.length << 2);
- _XRead(dpy, deviceName, rep.length << 2);
+ if (rep.length) {
+ if (rep.length < (INT_MAX >> 2)) {
+ unsigned long size = rep.length << 2;
+ deviceName = Xmalloc(size);
+ _XRead(dpy, deviceName, size);
+ deviceName[size - 1] = '\0';
+ } else
+ _XEatDataWords(dpy, rep.length);
}
ret = XDGAMapFramebuffer(screen, deviceName,