From 45f4bf94afb8b70d99fb7b5760fd65f5c3ad8b88 Mon Sep 17 00:00:00 2001
From: Paul B Mahol <onemda@gmail.com>
Date: Thu, 19 Jan 2017 15:42:47 +0100
Subject: [PATCH] avcodec/wmaprodec: check number of channels for XMA streams
Signed-off-by: Paul B Mahol <onemda@gmail.com>
---
libavcodec/wmaprodec.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/libavcodec/wmaprodec.c b/libavcodec/wmaprodec.c
index b0d3edeb9a7..55a48078dbd 100644
--- a/libavcodec/wmaprodec.c
+++ b/libavcodec/wmaprodec.c
@@ -1825,8 +1825,13 @@ static av_cold int xma_decode_init(AVCodecContext *avctx)
XMADecodeCtx *s = avctx->priv_data;
int i, ret;
- for (i = 0; i < avctx->channels / 2; i++) {
+ if (avctx->channels <= 0 || avctx->channels > 8)
+ return AVERROR_INVALIDDATA;
+
+ for (i = 0; i < (avctx->channels + 1) / 2; i++) {
ret = decode_init(&s->xma[i], avctx);
+ if (ret < 0)
+ return ret;
s->frames[i] = av_frame_alloc();
if (!s->frames[i])
return AVERROR(ENOMEM);
--
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