$OpenBSD: patch-src_libjasper_pnm_pnm_enc_c,v 1.2 2017/12/14 00:23:28 jca Exp $
Index: src/libjasper/pnm/pnm_enc.c
--- src/libjasper/pnm/pnm_enc.c.orig
+++ src/libjasper/pnm/pnm_enc.c
@@ -379,7 +379,7 @@ static int pnm_putdata(jas_stream_t *out, pnm_hdr_t *h
 						}
 					}
 				} else {
-					n = sprintf(buf, "%s%ld", ((!(!x && !cmptno)) ? " " : ""),
+					n = snprintf(buf, sizeof buf, "%s%ld", ((!(!x && !cmptno)) ? " " : ""),
 					  (long) v);
 					if (linelen > 0 && linelen + n > PNM_MAXLINELEN) {
 						jas_stream_printf(out, "\n");
