RepoMirrors
/
ffmpeg
mirror of https://git.ffmpeg.org/ffmpeg.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

dcadec: Do not check for overreads in auxiliary data 

The auxiliary data length field is not reliable,
and incorrect overread errors could be returned
for valid, real-world bitstreams.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
This commit is contained in:
Tim Walker 2015-11-22 00:02:37 +01:00 committed by Luca Barbato
parent c8fa647811
commit c12c085be7
1 changed files with 6 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
libavcodec/dcadec.c
View File

@ -1086,12 +1086,12 @@ static int dca_subframe_footer(DCAContext *s, int base_channel)
align_get_bits(&s->gb); // byte align align_get_bits(&s->gb); // byte align
skip_bits(&s->gb, 16); // nAUXCRC16 skip_bits(&s->gb, 16); // nAUXCRC16
// additional data (reserved, cf. ETSI TS 102 114 V1.4.1) /*
if ((reserved = (aux_data_end - get_bits_count(&s->gb))) < 0) { * additional data (reserved, cf. ETSI TS 102 114 V1.4.1)
av_log(s->avctx, AV_LOG_ERROR, *
"Overread auxiliary data by %d bits\n", -reserved); * Note: don't check for overreads, aux_data_count can't be trusted.
return AVERROR_INVALIDDATA; */
} else if (reserved) { if ((reserved = (aux_data_end - get_bits_count(&s->gb))) > 0) {
avpriv_request_sample(s->avctx, avpriv_request_sample(s->avctx,
"Core auxiliary data reserved content"); "Core auxiliary data reserved content");
skip_bits_long(&s->gb, reserved); skip_bits_long(&s->gb, reserved);