1 files changed, 18 insertions, 6 deletions

diff --git a/gpg-interface.c b/gpg-interface.c
index 37162c9a43..131e7d529e 100644
--- a/gpg-interface.c
+++ b/gpg-interface.c
@@ -156,21 +156,33 @@ static void parse_gpg_output(struct signature_check *sigc)
 				}
 				/* Do we have fingerprint? */
 				if (sigcheck_gpg_status[i].flags & GPG_STATUS_FINGERPRINT) {
+					const char *limit;
+					char **field;
+
 					next = strchrnul(line, ' ');
 					replace_cstring(&sigc->fingerprint, line, next);
 
-					/* Skip interim fields */
+					/*
+					 * Skip interim fields.  The search is
+					 * limited to the same line since only
+					 * OpenPGP signatures has a field with
+					 * the primary fingerprint.
+					 */
+					limit = strchrnul(line, '\n');
 					for (j = 9; j > 0; j--) {
-						if (!*next)
+						if (!*next || limit <= next)
 							break;
 						line = next + 1;
 						next = strchrnul(line, ' ');
 					}
 
-					next = strchrnul(line, '\n');
-					free(sigc->primary_key_fingerprint);
-					replace_cstring(&sigc->primary_key_fingerprint,
-							line, next);
+					field = &sigc->primary_key_fingerprint;
+					if (!j) {
+						next = strchrnul(line, '\n');
+						replace_cstring(field, line, next);
+					} else {
+						replace_cstring(field, NULL, NULL);
+					}
 				}
 
 				break;