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| author | Michael Niedermayer <michaelni@gmx.at> | 2013-09-19 16:26:25 +0200 |
|---|---|---|
| committer | Anton Khirnov <anton@khirnov.net> | 2013-09-24 13:24:29 +0200 |
| commit | 84df6d6a85e2136be60fd34bb57dd00705a01e28 (patch) | |
| tree | a664fcbdf238a88df1bdfc1433032e62c8c2f273 | |
| parent | 71cabb521ac397db3903011d2de7afd3e0fc7ab6 (diff) | |
| download | ffmpeg-84df6d6a85e2136be60fd34bb57dd00705a01e28.tar.gz | |
h264_sei: check SEI size
Signed-off-by: Anton Khirnov <anton@khirnov.net>
| -rw-r--r-- | libavcodec/h264_sei.c | 6 |
1 files changed, 6 insertions, 0 deletions
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); |