shithub: libdvdcss

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libdvdcss: Ensure that the pointer passed to strlen() is not NULL

This fixes CID 75513.

--- a/src/libdvdcss.c

+++ b/src/libdvdcss.c

@@ -262,7 +262,7 @@

     /* Check that there is enough space for the cache directory path and the

      * block filename. The +1 are path separators and terminating null byte. */

-    if( strlen( psz_cache ) + 1 + DISC_TITLE_LENGTH + 1 +

+    if( psz_cache && strlen( psz_cache ) + 1 + DISC_TITLE_LENGTH + 1 +

         MANUFACTURING_DATE_LENGTH + 1 + STRING_KEY_SIZE + 1 +

         CACHE_FILENAME_LENGTH + 1 > PATH_MAX )

     {