svn commit: r341896 - stable/12/contrib/ofed/opensm/opensm

[Hans Petter Selasky]

Author: hselasky
Date: Wed Dec 12 11:39:00 2018
New Revision: 341896
URL: https://svnweb.freebsd.org/changeset/base/341896

Log:
  MFC r341541:
  opensm: Use precision specifier for scanf
  
  If user input a string larger than the length of buffer, the stack
  memory will be corrupted.
  
  Sponsored by:   Mellanox Technologies

Modified:
  stable/12/contrib/ofed/opensm/opensm/main.c
Directory Properties:
  stable/12/   (props changed)

Modified: stable/12/contrib/ofed/opensm/opensm/main.c
==============================================================================
--- stable/12/contrib/ofed/opensm/opensm/main.c	Wed Dec 12 11:38:00 2018	(r341895)
+++ stable/12/contrib/ofed/opensm/opensm/main.c	Wed Dec 12 11:39:00 2018	(r341896)
@@ -492,7 +492,7 @@ static ib_net64_t get_port_guid(IN osm_opensm_t * p_os
 		fflush(stdout);
 		if (scanf("%u", &choice) <= 0) {
 			char junk[128];
-			if (scanf("%s", junk) <= 0)
+			if (scanf("%127s", junk) <= 0)
 				printf("\nError: Cannot scan!\n");
 		} else if (choice == 0)
 			return 0;