From 88626e5af8d006e67189bf10b96b982502a7e8ad Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Sun, 14 Dec 2014 21:01:59 +0100
Subject: [PATCH] jvdec: check frame dimensions
The frame size must be set by the caller and each dimension must be a
multiple of 8.
CC: libav-stable@libav.org
Bug-ID: CVE-2014-8542
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
---
libavcodec/jvdec.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/libavcodec/jvdec.c b/libavcodec/jvdec.c
index bb347e045a7..2a7aa102548 100644
--- a/libavcodec/jvdec.c
+++ b/libavcodec/jvdec.c
@@ -43,6 +43,13 @@ static av_cold int decode_init(AVCodecContext *avctx)
{
JvContext *s = avctx->priv_data;
+ if (!avctx->width || !avctx->height ||
+ (avctx->width & 7) || (avctx->height & 7)) {
+ av_log(avctx, AV_LOG_ERROR, "Invalid video dimensions: %dx%d\n",
+ avctx->width, avctx->height);
+ return AVERROR(EINVAL);
+ }
+
s->frame = av_frame_alloc();
if (!s->frame)
return AVERROR(ENOMEM);
--
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