It's possible for "preferred_realm" to be NULL, in which case we
don't want to pass it to strcmp. Other places that use this variable
test whether it's NULL first -- we need to do the same here.
This should fix the gssd crash reported here:
https://bugzilla.redhat.com/show_bug.cgi?id=1108615
Reported-by: Brian J. Murrell <brian@xxxxxxxxxxxxxxx>
Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxxxxxxx>
---
utils/gssd/krb5_util.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/utils/gssd/krb5_util.c b/utils/gssd/krb5_util.c
index 8369fdf0ed27..f1ebc0d09731 100644
--- a/utils/gssd/krb5_util.c
+++ b/utils/gssd/krb5_util.c
@@ -876,7 +876,7 @@ find_keytab_entry(krb5_context context, krb5_keytab kt, const char *tgtname,
i = 0;
realm = realmnames[i];
- if (strcmp (realm, preferred_realm) != 0) {
+ if (preferred_realm && strcmp (realm, preferred_realm) != 0) {
realm = preferred_realm;
/* resetting the realmnames index */
i = -1;
--
1.9.3
--
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