diff --git a/third_party/libopenjpeg20/pi.c b/third_party/libopenjpeg20/pi.c
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index 1697bcb..06f1e41 100644
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--- a/third_party/libopenjpeg20/pi.c
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+++ b/third_party/libopenjpeg20/pi.c
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@@ -36,6 +36,7 @@
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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+#include <limits.h>
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#include "opj_includes.h"
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/** @defgroup PI PI - Implementation of a packet iterator */
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@@ -1236,7 +1237,13 @@ opj_pi_iterator_t *opj_pi_create_decode(opj_image_t *p_image,
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l_current_pi = l_pi;
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/* memory allocation for include */
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- l_current_pi->include = (OPJ_INT16*) opj_calloc((l_tcp->numlayers +1) * l_step_l, sizeof(OPJ_INT16));
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+ l_current_pi->include = 00;
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+ if
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+ (l_step_l && l_tcp->numlayers < UINT_MAX / l_step_l - 1)
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+ {
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+ l_current_pi->include = (OPJ_INT16*)opj_calloc((l_tcp->numlayers + 1) * l_step_l, sizeof(OPJ_INT16));
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+ }
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+
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if
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(!l_current_pi->include)
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{
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