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| author | Michael Niedermayer <michaelni@gmx.at> | 2013-08-30 03:43:49 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2013-08-31 04:31:04 +0200 |
| commit | 890c36d7ff1a12641c9fe5c84db4398dfb493fc5 (patch) | |
| tree | a4e723767cac23b044eed6c274c786612f34efcf | |
| parent | a2e7fd406c5b1d9095fe198c72007e4136ef5e93 (diff) | |
| download | ffmpeg-890c36d7ff1a12641c9fe5c84db4398dfb493fc5.tar.gz | |
avcodec/ffv1dec: check global header version
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 20b965a1a43ae88b7ae95635d5a3570e7dc2bbd4)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | libavcodec/ffv1dec.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libavcodec/ffv1dec.c b/libavcodec/ffv1dec.c index a1da544697..69930d8ea8 100644 --- a/libavcodec/ffv1dec.c +++ b/libavcodec/ffv1dec.c @@ -447,6 +447,10 @@ static int read_extra_header(FFV1Context *f) ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8); f->version = get_symbol(c, state, 0); + if (f->version < 2) { + av_log(f->avctx, AV_LOG_ERROR, "Invalid version in global header\n"); + return AVERROR_INVALIDDATA; + } if (f->version > 2) { c->bytestream_end -= 4; f->minor_version = get_symbol(c, state, 0); |