From 1713eec29add37b654ec6bf262b843d139c1ffc6 Mon Sep 17 00:00:00 2001 From: Anton Khirnov Date: Thu, 28 Nov 2013 10:54:35 +0100 Subject: [PATCH] shorten: pad the internal bitstream buffer Fixes invalid reads. Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind CC:libav-stable@libav.org --- libavcodec/shorten.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/shorten.c b/libavcodec/shorten.c index 992e01b44c..c465fffe05 100644 --- a/libavcodec/shorten.c +++ b/libavcodec/shorten.c @@ -431,7 +431,7 @@ static int shorten_decode_frame(AVCodecContext *avctx, void *data, void *tmp_ptr; s->max_framesize = 1024; // should hopefully be enough for the first header tmp_ptr = av_fast_realloc(s->bitstream, &s->allocated_bitstream_size, - s->max_framesize); + s->max_framesize + FF_INPUT_BUFFER_PADDING_SIZE); if (!tmp_ptr) { av_log(avctx, AV_LOG_ERROR, "error allocating bitstream buffer\n"); return AVERROR(ENOMEM);