diff options
Diffstat (limited to 'xorg-server/render/render.c')
| -rw-r--r-- | xorg-server/render/render.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/xorg-server/render/render.c b/xorg-server/render/render.c index cbd70cc7e..623d5db33 100644 --- a/xorg-server/render/render.c +++ b/xorg-server/render/render.c @@ -1077,6 +1077,14 @@ ProcRenderAddGlyphs (ClientPtr client) gi = (xGlyphInfo *) (gids + nglyphs);
bits = (CARD8 *) (gi + nglyphs);
remain -= (sizeof (CARD32) + sizeof (xGlyphInfo)) * nglyphs;
+
+ /* protect against bad nglyphs */
+ if (gi < stuff || gi > ((CARD32 *)stuff + client->req_len) ||
+ bits < stuff || bits > ((CARD32 *)stuff + client->req_len)) {
+ err = BadLength;
+ goto bail;
+ }
+
for (i = 0; i < nglyphs; i++)
{
size_t padded_width;
|