iakerb_tkt_creds_ctx(iakerb_ctx_id_t ctx,
                     krb5_gss_cred_id_t cred,
                     krb5_gss_name_t name,
                     OM_uint32 time_req)

{
    krb5_error_code code;
    krb5_creds creds;
    krb5_timestamp now;

    assert(cred->name != NULL);
    assert(cred->name->princ != NULL);

    memset(&creds, 0, sizeof(creds));

    creds.client = cred->name->princ;
    creds.server = name->princ;

    if (time_req != 0 && time_req != GSS_C_INDEFINITE) {
        code = krb5_timeofday(ctx->k5c, &now);
        if (code != 0)
            goto cleanup;

        creds.times.endtime = now + time_req;
    }

    if (cred->name->ad_context != NULL) {
        code = krb5_authdata_export_authdata(ctx->k5c,
                                             cred->name->ad_context,
                                             AD_USAGE_TGS_REQ,
                                             &creds.authdata);
        if (code != 0)
            goto cleanup;
    }

    code = krb5_tkt_creds_init(ctx->k5c, cred->ccache, &creds, 0, &ctx->tcc);
    if (code != 0)
        goto cleanup;

cleanup:
    krb5_free_authdata(ctx->k5c, creds.authdata);

    return code;
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.