shithub: jbig2

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Fix 699083: Avoid leak in symbol dictionary parsing upon error.

--- a/jbig2_symbol_dict.c

+++ b/jbig2_symbol_dict.c

@@ -802,6 +802,8 @@

     int table_index = 0;

     const Jbig2HuffmanParams *huffman_params;

+    params.SDHUFF = 0;

+

     if (segment->data_length < 10)

         goto too_short;

@@ -1024,5 +1026,11 @@

     return (segment->result != NULL) ? 0 : -1;

 too_short:

+    if (params.SDHUFF) {

+        jbig2_release_huffman_table(ctx, params.SDHUFFDH);

+        jbig2_release_huffman_table(ctx, params.SDHUFFDW);

+        jbig2_release_huffman_table(ctx, params.SDHUFFBMSIZE);

+        jbig2_release_huffman_table(ctx, params.SDHUFFAGGINST);

+    }

     return jbig2_error(ctx, JBIG2_SEVERITY_FATAL, segment->number, "Segment too short");

 }