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From 6110caea45b235420b98cd41d845cc92238f6781 Mon Sep 17 00:00:00 2001 From: Philip Withnall <pwithnall@endlessos.org> Date: Thu, 4 Feb 2021 13:39:25 +0000 Subject: [PATCH 03/11] gobject: Use g_memdup2() instead of g_memdup() in obvious places MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Convert all the call sites which use `g_memdup()`’s length argument trivially (for example, by passing a `sizeof()`), so that they use `g_memdup2()` instead. In almost all of these cases the use of `g_memdup()` would not have caused problems, but it will soon be deprecated, so best port away from it. Signed-off-by: Philip Withnall <pwithnall@endlessos.org> Helps: #2319 Upstream-Status: Backport [https://mirrors.ocf.berkeley.edu/ubuntu/pool/main/g/glib2.0/glib2.0_2.64.6-1~ubuntu20.04.3.debian.tar.xz] CVE: CVE-2021-27219 Signed-off-by: Neetika Singh <Neetika.Singh@kpit.com> Signed-off-by: Ranjitsinh Rathod <ranjitsinh.rathod@kpit.com> --- gobject/gsignal.c | 3 ++- gobject/gtype.c | 9 +++++---- gobject/gtypemodule.c | 3 ++- gobject/tests/param.c | 4 +++- 4 files changed, 12 insertions(+), 7 deletions(-) --- a/gobject/gsignal.c +++ b/gobject/gsignal.c @@ -28,6 +28,7 @@ #include <signal.h> #include "gsignal.h" +#include "gstrfuncsprivate.h" #include "gtype-private.h" #include "gbsearcharray.h" #include "gvaluecollector.h" @@ -1809,7 +1810,7 @@ g_signal_newv (const gchar *signal node->single_va_closure_is_valid = FALSE; node->flags = signal_flags & G_SIGNAL_FLAGS_MASK; node->n_params = n_params; - node->param_types = g_memdup (param_types, sizeof (GType) * n_params); + node->param_types = g_memdup2 (param_types, sizeof (GType) * n_params); node->return_type = return_type; node->class_closure_bsa = NULL; if (accumulator) --- a/gobject/gtype.c +++ b/gobject/gtype.c @@ -33,6 +33,7 @@ #include "glib-private.h" #include "gconstructor.h" +#include "gstrfuncsprivate.h" #ifdef G_OS_WIN32 #include <windows.h> @@ -1470,7 +1471,7 @@ type_add_interface_Wm (TypeNode iholder->next = iface_node_get_holders_L (iface); iface_node_set_holders_W (iface, iholder); iholder->instance_type = NODE_TYPE (node); - iholder->info = info ? g_memdup (info, sizeof (*info)) : NULL; + iholder->info = info ? g_memdup2 (info, sizeof (*info)) : NULL; iholder->plugin = plugin; /* create an iface entry for this type */ @@ -1731,7 +1732,7 @@ type_iface_retrieve_holder_info_Wm (Type INVALID_RECURSION ("g_type_plugin_*", iholder->plugin, NODE_NAME (iface)); check_interface_info_I (iface, instance_type, &tmp_info); - iholder->info = g_memdup (&tmp_info, sizeof (tmp_info)); + iholder->info = g_memdup2 (&tmp_info, sizeof (tmp_info)); } return iholder; /* we don't modify write lock upon returning NULL */ @@ -2016,10 +2017,10 @@ type_iface_vtable_base_init_Wm (TypeNode IFaceEntry *pentry = type_lookup_iface_entry_L (pnode, iface); if (pentry) - vtable = g_memdup (pentry->vtable, iface->data->iface.vtable_size); + vtable = g_memdup2 (pentry->vtable, iface->data->iface.vtable_size); } if (!vtable) - vtable = g_memdup (iface->data->iface.dflt_vtable, iface->data->iface.vtable_size); + vtable = g_memdup2 (iface->data->iface.dflt_vtable, iface->data->iface.vtable_size); entry->vtable = vtable; vtable->g_type = NODE_TYPE (iface); vtable->g_instance_type = NODE_TYPE (node); --- a/gobject/gtypemodule.c +++ b/gobject/gtypemodule.c @@ -19,6 +19,7 @@ #include <stdlib.h> +#include "gstrfuncsprivate.h" #include "gtypeplugin.h" #include "gtypemodule.h" @@ -436,7 +437,7 @@ g_type_module_register_type (GTypeModule module_type_info->loaded = TRUE; module_type_info->info = *type_info; if (type_info->value_table) - module_type_info->info.value_table = g_memdup (type_info->value_table, + module_type_info->info.value_table = g_memdup2 (type_info->value_table, sizeof (GTypeValueTable)); return module_type_info->type; --- a/gobject/tests/param.c +++ b/gobject/tests/param.c @@ -2,6 +2,8 @@ #include <glib-object.h> #include <stdlib.h> +#include "gstrfuncsprivate.h" + static void test_param_value (void) { @@ -874,7 +876,7 @@ main (int argc, char *argv[]) test_path = g_strdup_printf ("/param/implement/subprocess/%d-%d-%d-%d", data.change_this_flag, data.change_this_type, data.use_this_flag, data.use_this_type); - test_data = g_memdup (&data, sizeof (TestParamImplementData)); + test_data = g_memdup2 (&data, sizeof (TestParamImplementData)); g_test_add_data_func_full (test_path, test_data, test_param_implement_child, g_free); g_free (test_path); }


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