avcodec/ffv1dec: Print an error if the quant table count is invalid
authorMichael Niedermayer <michael@niedermayer.cc>
Thu, 5 Nov 2015 00:25:50 +0000 (01:25 +0100)
committerCarl Eugen Hoyos <cehoyos@ag.or.at>
Wed, 2 Dec 2015 10:59:42 +0000 (11:59 +0100)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit a8b254e436dce2f5c8c6459108dab4b02cc6b79b)

libavcodec/ffv1dec.c

index b920be5..9d25f6e 100644 (file)
@@ -567,8 +567,10 @@ static int read_extra_header(FFV1Context *f)
     }
 
     f->quant_table_count = get_symbol(c, state, 0);
-    if (f->quant_table_count > (unsigned)MAX_QUANT_TABLES || !f->quant_table_count)
+    if (f->quant_table_count > (unsigned)MAX_QUANT_TABLES || !f->quant_table_count) {
+        av_log(f->avctx, AV_LOG_ERROR, "quant table count %d is invalid\n", f->quant_table_count);
         return AVERROR_INVALIDDATA;
+    }
 
     for (i = 0; i < f->quant_table_count; i++) {
         f->context_count[i] = read_quant_tables(c, f->quant_tables[i]);