Author: pfg
Date: Fri Apr 1 01:35:52 2016
New Revision: 297477
URL: https://svnweb.freebsd.org/changeset/base/297477
Log:
mtest: Prevent access to uninitialized value.
case 'g' makes use of value n, which is initialized for case 'b'
and passe through to case 'g'. If case 'g' is called directly
value 'n' is not initialized.
Avoid the issue by initializing n before entering the switch.
CID: 1006375
Reviewed by: bms
Modified:
head/usr.sbin/mtest/mtest.c
Modified: head/usr.sbin/mtest/mtest.c
==============================================================================
--- head/usr.sbin/mtest/mtest.c Thu Mar 31 23:57:03 2016 (r297476)
+++ head/usr.sbin/mtest/mtest.c Fri Apr 1 01:35:52 2016 (r297477)
@@ -396,6 +396,7 @@ process_cmd(char *cmd, int s, int s6, FI
while (isblank(*++line))
; /* Skip whitespace. */
+ n = 0;
switch (*cmd) {
case '?':
usage();
@@ -611,7 +612,6 @@ process_cmd(char *cmd, int s, int s6, FI
}
/* First determine our current filter mode. */
- n = 0;
if (getsourcefilter(af2sock(af, s, s6), ifindex,
&su.sa, su.sa.sa_len, &fmode, &n, NULL) != 0) {
warn("getsourcefilter");
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