$OpenBSD: patch-src_libjasper_jp2_jp2_enc_c,v 1.3 2021/05/23 19:28:08 sthen Exp $

Index: src/libjasper/jp2/jp2_enc.c
--- src/libjasper/jp2/jp2_enc.c.orig
+++ src/libjasper/jp2/jp2_enc.c
@@ -397,7 +397,8 @@ int jp2_encode(jas_image_t *image, jas_stream_t *out, 
 	/* Output the JPEG-2000 code stream. */
 
 	overhead = jas_stream_getrwcount(out);
-	sprintf(buf, "%s\n_jp2overhead=%lu\n", (optstr ? optstr : ""),
+	snprintf(buf, sizeof buf, "%s\n_jp2overhead=%lu\n", 
+	  (optstr ? optstr : ""),
 	  (unsigned long) overhead);
 
 	if (jpc_encode(image, out, buf)) {
