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| author | Michael Niedermayer <michael@niedermayer.cc> | 2018-02-09 04:17:16 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-02-11 03:04:48 +0100 |
| commit | 570023eab3e2962b4ad8345a157c1e18ca1a6eca (patch) | |
| tree | 7c3b63d5c3eb4e2f80160c74c9af706799a18e8c /libavcodec/vp3.c | |
| parent | 76cc0f0f673353cd4746cd3b83838ae335e5d9ed (diff) | |
| download | ffmpeg-570023eab3e2962b4ad8345a157c1e18ca1a6eca.tar.gz | |
avcodec/vp3: Check eob_run
Fixes: out of array access
Fixes: 5919/clusterfuzz-testcase-minimized-5859311382167552
Fixes: special case for theora (untested due to lack of sample)
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec/vp3.c')
| -rw-r--r-- | libavcodec/vp3.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavcodec/vp3.c b/libavcodec/vp3.c index cf9c57f5fa..33be345c14 100644 --- a/libavcodec/vp3.c +++ b/libavcodec/vp3.c @@ -978,6 +978,9 @@ static int unpack_vlcs(Vp3DecodeContext *s, GetBitContext *gb, if (eob_run_get_bits[token]) eob_run += get_bits(gb, eob_run_get_bits[token]); + if (!eob_run) + eob_run = INT_MAX; + // record only the number of blocks ended in this plane, // any spill will be recorded in the next plane. if (eob_run > num_coeffs - coeff_i) { |