Merge pull request #5359 from larsewi/interface-3.21.x

Fixed infinite loop on error bug while reading interface exception file (3.21.x)
cfengine · Nov 3, 2023 · 6290c2a · 6290c2a
2 parents 91ba466 + 0ef208d
commit 6290c2a
Showing 1 changed file with 9 additions and 1 deletion.
diff --git a/libenv/unix_iface.c b/libenv/unix_iface.c
@@ -849,7 +849,15 @@ static void InitIgnoreInterfaces()
     while (!feof(fin))
     {
         regex[0] = '\0';
-        int scanCount = fscanf(fin,"%255s",regex);
+        int scanCount = fscanf(fin, "%255s", regex);
+        if (ferror(fin) != 0)
+        {
+            Log(LOG_LEVEL_ERR,
+                "Failed to read interface exception file %s: %s",
+                filename,
+                GetErrorStr());
+            break;
+        }
 
         if (scanCount != 0 && *regex != '\0')
         {