gssd: initialize fakeseed in prepare_krb5_rfc1964_buffer

This causes a compiler warning and also means that we're stuffing
the buffer with uninitialized junk from the stack. Other places in
this code initialize "fakeseed" to 0. Do the same here.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>

diff --git a/utils/gssd/context_lucid.c b/utils/gssd/context_lucid.c
index af7de589160448d028bfd6783dd86660ac785f93..4a682ae351273021f37197e6255a74fd10352587 100644 (file)
--- a/utils/gssd/context_lucid.c
+++ b/utils/gssd/context_lucid.c
@@ -70,9 +70,10 @@ static int
 prepare_krb5_rfc1964_buffer(gss_krb5_lucid_context_v1_t *lctx,
        gss_buffer_desc *buf, int32_t *endtime)
 {
+#define FAKESEED_SIZE 16
        char *p, *end;
        static int constant_zero = 0;
-       unsigned char fakeseed[16];
+       unsigned char fakeseed[FAKESEED_SIZE];
        uint32_t word_send_seq;
        gss_krb5_lucid_key_t enc_key;
        int i;
@@ -88,6 +89,7 @@ prepare_krb5_rfc1964_buffer(gss_krb5_lucid_context_v1_t *lctx,
         */
        memset(&enc_key, 0, sizeof(enc_key));
        memset(&fakeoid, 0, sizeof(fakeoid));
+       memset(fakeseed, 0, FAKESEED_SIZE);
 
        if (!(buf->value = calloc(1, MAX_CTX_LEN)))
                goto out_err;
@@ -98,7 +100,7 @@ prepare_krb5_rfc1964_buffer(gss_krb5_lucid_context_v1_t *lctx,
 
        /* seed_init and seed not used by kernel anyway */
        if (WRITE_BYTES(&p, end, constant_zero)) goto out_err;
-       if (write_bytes(&p, end, &fakeseed, 16)) goto out_err;
+       if (write_bytes(&p, end, &fakeseed, FAKESEED_SIZE)) goto out_err;
 
        if (WRITE_BYTES(&p, end, lctx->rfc1964_kd.sign_alg)) goto out_err;
        if (WRITE_BYTES(&p, end, lctx->rfc1964_kd.seal_alg)) goto out_err;