From a02bb835ace0d7bcfd187a0538d7064104bec6a9 Mon Sep 17 00:00:00 2001 From: David Conrad Date: Sun, 27 Jun 2010 01:46:23 +0000 Subject: [PATCH] vorbisdec: Take channels into account when checking against residue overflow Fixes issue1969 Originally committed as revision 23812 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/vorbis_dec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/vorbis_dec.c b/libavcodec/vorbis_dec.c index 608277a..b0f461c 100644 --- a/libavcodec/vorbis_dec.c +++ b/libavcodec/vorbis_dec.c @@ -645,7 +645,7 @@ static int vorbis_parse_setup_hdr_residues(vorbis_context *vc) res_setup->partition_size = get_bits(gb, 24) + 1; /* Validations to prevent a buffer overflow later. */ if (res_setup->begin>res_setup->end || - res_setup->end>vc->blocksize[1] / (res_setup->type == 2 ? 1 : 2) || + res_setup->end > vc->avccontext->channels * vc->blocksize[1] / (res_setup->type == 2 ? 1 : 2) || (res_setup->end-res_setup->begin) / res_setup->partition_size > V_MAX_PARTITIONS) { av_log(vc->avccontext, AV_LOG_ERROR, "partition out of bounds: type, begin, end, size, blocksize: %"PRIdFAST16", %"PRIdFAST32", %"PRIdFAST32", %"PRIdFAST32", %"PRIdFAST32"\n", res_setup->type, res_setup->begin, res_setup->end, res_setup->partition_size, vc->blocksize[1] / 2); return -1; -- 2.7.4