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livepatch: fix format string in kobject_init_and_add()

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kobject_init_and_add() takes expects format string for a name, so we
better provide it in order to avoid infoleaks if modules craft their
mod->name in a special way.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Reported-by: Kees Cook <keescook@chromium.org>
Acked-by: Seth Jennings <sjenning@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Jiri Kosina 2015-02-15 10:03:20 +01:00
parent 1d9c5d79e6
commit e0b561ee78
1 changed files with 2 additions and 2 deletions
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4
kernel/livepatch/core.c
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@ -731,7 +731,7 @@ static int klp_init_func(struct klp_object *obj, struct klp_func *func)
func->state = KLP_DISABLED;
return kobject_init_and_add(&func->kobj, &klp_ktype_func,
obj->kobj, func->old_name);
obj->kobj, "%s", func->old_name);
}
/* parts of the initialization that is done only when the object is loaded */
@ -807,7 +807,7 @@ static int klp_init_patch(struct klp_patch *patch)
patch->state = KLP_DISABLED;
ret = kobject_init_and_add(&patch->kobj, &klp_ktype_patch,
klp_root_kobj, patch->mod->name);
klp_root_kobj, "%s", patch->mod->name);
if (ret)
goto unlock;