Index: third_party/libopenjpeg20/j2k.c |
diff --git a/third_party/libopenjpeg20/j2k.c b/third_party/libopenjpeg20/j2k.c |
index b20f219bf1c13bd8ab1e9702888fc23ba91a227d..9056feb29a45907d9503d335893a984cbc038a3d 100644 |
--- a/third_party/libopenjpeg20/j2k.c |
+++ b/third_party/libopenjpeg20/j2k.c |
@@ -8211,6 +8211,12 @@ static OPJ_BOOL opj_j2k_update_image_data (opj_tcd_t * p_tcd, OPJ_BYTE * p_data, |
* */ |
assert( l_res->x0 >= 0); |
assert( l_res->x1 >= 0); |
+ |
+ /* Prevent bad casting to unsigned values in the subsequent lines. */ |
+ if ( l_res->x0 < 0 || l_res->x1 < 0 || l_res->y0 < 0 || l_res->y1 < 0 ) { |
+ return OPJ_FALSE; |
+ } |
+ |
if ( l_x0_dest < (OPJ_UINT32)l_res->x0 ) { |
l_start_x_dest = (OPJ_UINT32)l_res->x0 - l_x0_dest; |
l_offset_x0_src = 0; |