diff --git a/third_party/libopenjpeg20/0037-tcd_init_tile.patch b/third_party/libopenjpeg20/0037-tcd_init_tile.patch
new file mode 100644
index 0000000..e38a7ec
--- /dev/null
+++ b/third_party/libopenjpeg20/0037-tcd_init_tile.patch
@@ -0,0 +1,31 @@
+diff --git a/third_party/libopenjpeg20/tcd.c b/third_party/libopenjpeg20/tcd.c
+index 2ae211ef4..9e98f04ab 100644
+--- a/third_party/libopenjpeg20/tcd.c
++++ b/third_party/libopenjpeg20/tcd.c
+@@ -910,8 +910,24 @@ static INLINE OPJ_BOOL opj_tcd_init_tile(opj_tcd_t *p_tcd, OPJ_UINT32 p_tile_no,
+             /* p. 64, B.6, ISO/IEC FDIS15444-1 : 2000 (18 august 2000)  */
+             l_tl_prc_x_start = opj_int_floordivpow2(l_res->x0, (OPJ_INT32)l_pdx) << l_pdx;
+             l_tl_prc_y_start = opj_int_floordivpow2(l_res->y0, (OPJ_INT32)l_pdy) << l_pdy;
+-            l_br_prc_x_end = opj_int_ceildivpow2(l_res->x1, (OPJ_INT32)l_pdx) << l_pdx;
+-            l_br_prc_y_end = opj_int_ceildivpow2(l_res->y1, (OPJ_INT32)l_pdy) << l_pdy;
++            {
++                OPJ_UINT32 tmp = ((OPJ_UINT32)opj_int_ceildivpow2(l_res->x1,
++                                  (OPJ_INT32)l_pdx)) << l_pdx;
++                if (tmp > (OPJ_UINT32)INT_MAX) {
++                    opj_event_msg(manager, EVT_ERROR, "Integer overflow\n");
++                    return OPJ_FALSE;
++                }
++                l_br_prc_x_end = (OPJ_INT32)tmp;
++            }
++            {
++                OPJ_UINT32 tmp = ((OPJ_UINT32)opj_int_ceildivpow2(l_res->y1,
++                                  (OPJ_INT32)l_pdy)) << l_pdy;
++                if (tmp > (OPJ_UINT32)INT_MAX) {
++                    opj_event_msg(manager, EVT_ERROR, "Integer overflow\n");
++                    return OPJ_FALSE;
++                }
++                l_br_prc_y_end = (OPJ_INT32)tmp;
++            }
+             /*fprintf(stderr, "\t\t\tprc_x_start=%d, prc_y_start=%d, br_prc_x_end=%d, br_prc_y_end=%d \n", l_tl_prc_x_start, l_tl_prc_y_start, l_br_prc_x_end ,l_br_prc_y_end );*/
+ 
+             l_res->pw = (l_res->x0 == l_res->x1) ? 0U : (OPJ_UINT32)((
diff --git a/third_party/libopenjpeg20/README.pdfium b/third_party/libopenjpeg20/README.pdfium
index e812f13..2a13a61 100644
--- a/third_party/libopenjpeg20/README.pdfium
+++ b/third_party/libopenjpeg20/README.pdfium
@@ -28,3 +28,4 @@
 0034-opj_malloc.patch: PDFium changes in opj_malloc.
 0035-opj_image_data_free.patch: Use the right free function in opj_jp2_apply_pclr.
 0036-opj_j2k_update_image_dimensions.patch: fix integer overflow.
+0037-tcd_init_tile.patch: Avoid integer overflow in opj_tcd_init_tile().
diff --git a/third_party/libopenjpeg20/tcd.c b/third_party/libopenjpeg20/tcd.c
index 2ae211e..9e98f04 100644
--- a/third_party/libopenjpeg20/tcd.c
+++ b/third_party/libopenjpeg20/tcd.c
@@ -910,8 +910,24 @@
             /* p. 64, B.6, ISO/IEC FDIS15444-1 : 2000 (18 august 2000)  */
             l_tl_prc_x_start = opj_int_floordivpow2(l_res->x0, (OPJ_INT32)l_pdx) << l_pdx;
             l_tl_prc_y_start = opj_int_floordivpow2(l_res->y0, (OPJ_INT32)l_pdy) << l_pdy;
-            l_br_prc_x_end = opj_int_ceildivpow2(l_res->x1, (OPJ_INT32)l_pdx) << l_pdx;
-            l_br_prc_y_end = opj_int_ceildivpow2(l_res->y1, (OPJ_INT32)l_pdy) << l_pdy;
+            {
+                OPJ_UINT32 tmp = ((OPJ_UINT32)opj_int_ceildivpow2(l_res->x1,
+                                  (OPJ_INT32)l_pdx)) << l_pdx;
+                if (tmp > (OPJ_UINT32)INT_MAX) {
+                    opj_event_msg(manager, EVT_ERROR, "Integer overflow\n");
+                    return OPJ_FALSE;
+                }
+                l_br_prc_x_end = (OPJ_INT32)tmp;
+            }
+            {
+                OPJ_UINT32 tmp = ((OPJ_UINT32)opj_int_ceildivpow2(l_res->y1,
+                                  (OPJ_INT32)l_pdy)) << l_pdy;
+                if (tmp > (OPJ_UINT32)INT_MAX) {
+                    opj_event_msg(manager, EVT_ERROR, "Integer overflow\n");
+                    return OPJ_FALSE;
+                }
+                l_br_prc_y_end = (OPJ_INT32)tmp;
+            }
             /*fprintf(stderr, "\t\t\tprc_x_start=%d, prc_y_start=%d, br_prc_x_end=%d, br_prc_y_end=%d \n", l_tl_prc_x_start, l_tl_prc_y_start, l_br_prc_x_end ,l_br_prc_y_end );*/
 
             l_res->pw = (l_res->x0 == l_res->x1) ? 0U : (OPJ_UINT32)((