diff --git a/render/render.c b/render/render.c
index caaa278..b53e878 100644
--- a/render/render.c
+++ b/render/render.c
@@ -1918,6 +1920,8 @@ static int ProcRenderCreateLinearGradient (ClientPtr client)
LEGAL_NEW_RESOURCE(stuff->pid, client);
len = (client->req_len << 2) - sizeof(xRenderCreateLinearGradientReq);
+ if (stuff->nStops > UINT32_MAX/(sizeof(xFixed) + sizeof(xRenderColor)))
+ return BadLength;
if (len != stuff->nStops*(sizeof(xFixed) + sizeof(xRenderColor)))
return BadLength;
@@ -2491,18 +2495,18 @@ SProcRenderCreateSolidFill(ClientPtr client)
return (*ProcRenderVector[stuff->renderReqType]) (client);
}
-static void swapStops(void *stuff, int n)
+static void swapStops(void *stuff, int num)
{
- int i;
+ int i, n;
CARD32 *stops;
CARD16 *colors;
stops = (CARD32 *)(stuff);
- for (i = 0; i < n; ++i) {
+ for (i = 0; i < num; ++i) {
swapl(stops, n);
++stops;
}
colors = (CARD16 *)(stops);
- for (i = 0; i < 4*n; ++i) {
+ for (i = 0; i < 4*num; ++i) {
swaps(stops, n);
++stops;
}
@@ -2525,6 +2529,8 @@ SProcRenderCreateLinearGradient (ClientPtr client)
swapl(&stuff->nStops, n);
len = (client->req_len << 2) - sizeof(xRenderCreateLinearGradientReq);
+ if (stuff->nStops > UINT32_MAX/(sizeof(xFixed) + sizeof(xRenderColor)))
+ return BadLength;
if (len != stuff->nStops*(sizeof(xFixed) + sizeof(xRenderColor)))
return BadLength;
@@ -2552,6 +2558,8 @@ SProcRenderCreateRadialGradient (ClientPtr client)
swapl(&stuff->nStops, n);
len = (client->req_len << 2) - sizeof(xRenderCreateRadialGradientReq);
+ if (stuff->nStops > UINT32_MAX/(sizeof(xFixed) + sizeof(xRenderColor)))
+ return BadLength;
if (len != stuff->nStops*(sizeof(xFixed) + sizeof(xRenderColor)))
return BadLength;
@@ -2576,6 +2584,8 @@ SProcRenderCreateConicalGradient (ClientPtr client)
swapl(&stuff->nStops, n);
len = (client->req_len << 2) - sizeof(xRenderCreateConicalGradientReq);
+ if (stuff->nStops > UINT32_MAX/(sizeof(xFixed) + sizeof(xRenderColor)))
+ return BadLength;
if (len != stuff->nStops*(sizeof(xFixed) + sizeof(xRenderColor)))
return BadLength;