From b563afe6fa9345a62750055998a28a3926c02334 Mon Sep 17 00:00:00 2001 From: Carl Eugen Hoyos Date: Thu, 10 Jan 2013 13:00:19 +0100 Subject: [PATCH] Do not allow arbitrary packet size in aac decoder. Fixes a crash with a file containing a 400MB packet reported in bug 420. --- libavcodec/aacdec.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavcodec/aacdec.c b/libavcodec/aacdec.c index 239153a9f9..fcdfdb2050 100644 --- a/libavcodec/aacdec.c +++ b/libavcodec/aacdec.c @@ -2665,6 +2665,9 @@ static int aac_decode_frame(AVCodecContext *avctx, void *data, if (ac->force_dmono_mode >= 0) ac->dmono_mode = ac->force_dmono_mode; + if (INT_MAX / 8 <= buf_size) + return AVERROR_INVALIDDATA; + init_get_bits(&gb, buf, buf_size * 8); if ((err = aac_decode_frame_int(avctx, data, got_frame_ptr, &gb, avpkt)) < 0)