From 845724c82c1a732ab398c9e8cedd178f96f1626d Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Sat, 17 Nov 2012 20:17:22 +0100
Subject: [PATCH] vcr1: check if dimensions are supported, fix out of array
accesses.
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
libavcodec/vcr1.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/libavcodec/vcr1.c b/libavcodec/vcr1.c
index 2a4a0908850..acac9258701 100644
--- a/libavcodec/vcr1.c
+++ b/libavcodec/vcr1.c
@@ -50,6 +50,10 @@ static av_cold int vcr1_decode_init(AVCodecContext *avctx)
avctx->pix_fmt = AV_PIX_FMT_YUV410P;
+ if (avctx->width % 8 || avctx->height%4) {
+ av_log_ask_for_sample(avctx, "odd dimensions are not supported\n");
+ return AVERROR_PATCHWELCOME;
+ }
return 0;
}
--
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