diff --git a/cfg/posix.cfg b/cfg/posix.cfg
index 52d3d6f33..4fbff131f 100644
--- a/cfg/posix.cfg
+++ b/cfg/posix.cfg
@@ -746,6 +746,17 @@ The function 'mktemp' is considered to be dangerous due to race conditions and s
       <not-uninit/>
     </arg>
   </function>
+  <!-- int fchmod(int fildes, mode_t mode); -->
+  <function name="fchmod">
+    <noreturn>false</noreturn>
+    <leak-ignore/>
+    <arg nr="1">
+      <not-uninit/>
+    </arg>
+    <arg nr="2">
+      <not-uninit/>
+    </arg>
+  </function>
   <!-- int chown(const char *path, uid_t owner, gid_t group); -->
   <function name="chown">
     <noreturn>false</noreturn>
diff --git a/cfg/std.cfg b/cfg/std.cfg
index f2bb8076f..aba39d55a 100644
--- a/cfg/std.cfg
+++ b/cfg/std.cfg
@@ -3499,6 +3499,17 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
       <not-uninit/>
     </arg>
   </function>
+  <!-- errno_t tmpnam_s(char *filename_s, rsize_t maxsize); -->
+  <function name="tmpnam_s">
+    <noreturn>false</noreturn>
+    <leak-ignore/>
+    <arg nr="1">
+      <not-uninit/>
+    </arg>
+    <arg nr="2">
+      <not-uninit/>
+    </arg>
+  </function>
   <!-- FILE *tmpfile(void); -->
   <function name="tmpfile">
     <use-retval/>