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path: root/openjpeg2_CVE-2020-6851.patch
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diff -rupN --no-dereference openjpeg-2.3.1/src/lib/openjp2/j2k.c openjpeg-2.3.1-new/src/lib/openjp2/j2k.c
--- openjpeg-2.3.1/src/lib/openjp2/j2k.c	2019-04-02 14:45:15.000000000 +0200
+++ openjpeg-2.3.1-new/src/lib/openjp2/j2k.c	2020-11-28 23:29:38.618863089 +0100
@@ -9236,6 +9236,14 @@ static OPJ_BOOL opj_j2k_update_image_dim
     l_img_comp = p_image->comps;
     for (it_comp = 0; it_comp < p_image->numcomps; ++it_comp) {
         OPJ_INT32 l_h, l_w;
+        if (p_image->x0 > (OPJ_UINT32)INT_MAX ||
+                p_image->y0 > (OPJ_UINT32)INT_MAX ||
+                p_image->x1 > (OPJ_UINT32)INT_MAX ||
+                p_image->y1 > (OPJ_UINT32)INT_MAX) {
+            opj_event_msg(p_manager, EVT_ERROR,
+                          "Image coordinates above INT_MAX are not supported\n");
+            return OPJ_FALSE;
+        }
 
         l_img_comp->x0 = (OPJ_UINT32)opj_int_ceildiv((OPJ_INT32)p_image->x0,
                          (OPJ_INT32)l_img_comp->dx);