Fix latest zlib security exploit (CAN-2005-2096).

b5be9e6c · Wayne Davison · 1e1cf689 · b5be9e6c
Commit b5be9e6c authored Jul 07, 2005 by Wayne Davison
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inftrees.c zlib/inftrees.c +1 -1

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--- a/zlib/inftrees.c
+++ b/zlib/inftrees.c
@@ -134,7 +134,7 @@ unsigned short FAR *work;
        left -= count[len];
        if (left < 0) return -1;        /* over-subscribed */
    }
-    if (left > 0 && (type == CODES || (codes - count[0] != 1)))
+    if (left > 0 && (type == CODES || max != 1))
        return -1;                      /* incomplete set */

    /* generate offsets into symbol table for each length for sorting */