prevent to allocate a big chunk of memory on corrupted LUT

Overflow here is harmless, but caller code may try to allocate a big chunk of memory, which will be immediatly freed because file size does not match.

1 files changed, 3 insertions, 0 deletions

diff --git a/src/cmslut.c b/src/cmslut.c
index 77977fc..383f05c 100644
--- a/src/cmslut.c
+++ b/src/cmslut.c
@@ -475,6 +475,9 @@ cmsUInt32Number CubeSize(const cmsUInt32Number Dims[], cmsUInt32Number b)
         if (rv > UINT_MAX / dim) return 0;
     }
 
+    // Again, prevent overflow
+    if (rv > UINT_MAX / 15) return 0;
+
     return rv;
 }