From 3f7b89937d1699a7eea9ce7170b16372af3585ad Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Tue, 10 Mar 2015 20:21:14 +0100 Subject: [PATCH] avcodec/012v: Check dimensions more completely Fixes division by 0 Found-by: Thomas Lindroth Signed-off-by: Michael Niedermayer (cherry picked from commit d3b25383daffac154846daeb4e4fb46569e728db) Signed-off-by: Michael Niedermayer --- libavcodec/012v.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libavcodec/012v.c b/libavcodec/012v.c index c2b6a35041..7526e8fcba 100644 --- a/libavcodec/012v.c +++ b/libavcodec/012v.c @@ -45,8 +45,8 @@ static int zero12v_decode_frame(AVCodecContext *avctx, void *data, const uint8_t *line_end, *src = avpkt->data; int stride = avctx->width * 8 / 3; - if (width == 1) { - av_log(avctx, AV_LOG_ERROR, "Width 1 not supported.\n"); + if (width <= 1 || avctx->height <= 0) { + av_log(avctx, AV_LOG_ERROR, "Dimensions %dx%d not supported.\n", width, avctx->height); return AVERROR_INVALIDDATA; }