diff --git a/drivers/char/mem/src/mem.c b/drivers/char/mem/src/mem.c
index 4030a29c..8a4e96e9 100644
--- a/drivers/char/mem/src/mem.c
+++ b/drivers/char/mem/src/mem.c
@@ -97,5 +97,5 @@ static const struct file_operations_vfs g_memDevOps = {
 
 int DevMemRegister(void)
 {
-    return register_driver("/dev/mem", &g_memDevOps, 0666, 0); /* 0666: file mode */
+    return register_driver("/dev/mem", &g_memDevOps, 0644, 0); /* 0644: file mode */
 }
diff --git a/fs/proc/os_adapt/fs_cache_proc.c b/fs/proc/os_adapt/fs_cache_proc.c
index 620420ec..19bcdb02 100644
--- a/fs/proc/os_adapt/fs_cache_proc.c
+++ b/fs/proc/os_adapt/fs_cache_proc.c
@@ -207,7 +207,7 @@ static const struct ProcFileOperations FS_CACHE_PROC_FOPS = {
 
 void ProcFsCacheInit(void)
 {
-    struct ProcDirEntry *pde = CreateProcEntry("fs_cache", 0, NULL);
+    struct ProcDirEntry *pde = CreateProcEntry("fs_cache", 0400, NULL);
     if (pde == NULL) {
         PRINT_ERR("create fs_cache error!\n");
         return;