From 84df6d6a85e2136be60fd34bb57dd00705a01e28 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Thu, 19 Sep 2013 16:26:25 +0200 Subject: h264_sei: check SEI size Signed-off-by: Anton Khirnov --- libavcodec/h264_sei.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'libavcodec/h264_sei.c') diff --git a/libavcodec/h264_sei.c b/libavcodec/h264_sei.c index 47f9c14d7d..27a2c7689c 100644 --- a/libavcodec/h264_sei.c +++ b/libavcodec/h264_sei.c @@ -190,6 +190,12 @@ int ff_h264_decode_sei(H264Context *h) size += show_bits(&h->gb, 8); while (get_bits(&h->gb, 8) == 255); + if (size > get_bits_left(&h->gb) / 8) { + av_log(h->avctx, AV_LOG_ERROR, "SEI type %d truncated at %d\n", + type, get_bits_left(&h->gb)); + return AVERROR_INVALIDDATA; + } + switch (type) { case SEI_TYPE_PIC_TIMING: // Picture timing SEI ret = decode_picture_timing(h); -- cgit v1.2.3