detect buffer overflows in RleUncompress (#1036)

Signed-off-by: Peter Hillman <[email protected]>
AcademySoftwareFoundation · Jun 30, 2021 · dbfaf8a · dbfaf8a
1 parent 466d786
commit dbfaf8a
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/src/lib/OpenEXR/ImfRle.cpp b/src/lib/OpenEXR/ImfRle.cpp
@@ -117,6 +117,11 @@ rleUncompress (int inLength, int maxLength, const signed char in[], char out[])
 	    if (0 > (maxLength -= count + 1))
 		return 0;
 
+        // check the input buffer is big enough to contain
+        // byte to be duplicated
+        if (inLength < 0)
+          return 0;
+
         memset(out, *(char*)in, count+1);
         out += count+1;