From 28eddef689f2b4843a84f7d05fd9614246f92cc4 Mon Sep 17 00:00:00 2001
From: Luca Barbato <lu_zero@gentoo.org>
Date: Tue, 21 Apr 2015 14:42:21 +0200
Subject: hq_hqa: Validate get_vlc2 return value

The `hq_ac_vlc.table` is incomplete, so unaccounted symbol return -1
as value.
---
 libavcodec/hq_hqa.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'libavcodec/hq_hqa.c')

diff --git a/libavcodec/hq_hqa.c b/libavcodec/hq_hqa.c
index 4b18eaef78..ae378e6524 100644
--- a/libavcodec/hq_hqa.c
+++ b/libavcodec/hq_hqa.c
@@ -75,7 +75,10 @@ static int hq_decode_block(HQContext *c, GetBitContext *gb, int16_t block[64],
     }
 
     for (;;) {
-        val  = get_vlc2(gb, c->hq_ac_vlc.table, 9, 2);
+        val = get_vlc2(gb, c->hq_ac_vlc.table, 9, 2);
+        if (val < 0)
+            return AVERROR_INVALIDDATA;
+
         pos += ff_hq_ac_skips[val];
         if (pos >= 64)
             break;
-- 
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