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| author | Michael Niedermayer <michael@niedermayer.cc> | 2018-05-04 19:11:36 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-07-16 19:06:26 +0200 |
| commit | 083c48e6d9dbc1c390146422ddcdc2d25278e3a4 (patch) | |
| tree | e3e5f0881f441313b2ed6bb445e3443f5ab852f5 | |
| parent | 6315215e5c0b4052f66f5f0f4311acd2031fb43c (diff) | |
| download | ffmpeg-083c48e6d9dbc1c390146422ddcdc2d25278e3a4.tar.gz | |
avcodec/jpeg2000dec: Skip init for component in CPRL if nothing is to be done
Fixes: assertion failure
Fixes: 7949/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_JPEG2000_fuzzer-4819602782552064
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit a96c131eb53b00de154f4773d96a3b323ea3daed)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/jpeg2000dec.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavcodec/jpeg2000dec.c b/libavcodec/jpeg2000dec.c index 404cf06ddc..2eb66bb921 100644 --- a/libavcodec/jpeg2000dec.c +++ b/libavcodec/jpeg2000dec.c @@ -1125,6 +1125,9 @@ static int jpeg2000_decode_packets_po_iteration(Jpeg2000DecoderContext *s, Jpeg2 step_x = 32; step_y = 32; + if (RSpoc > FFMIN(codsty->nreslevels, REpoc)) + continue; + for (reslevelno = RSpoc; reslevelno < FFMIN(codsty->nreslevels, REpoc); reslevelno++) { uint8_t reducedresno = codsty->nreslevels - 1 -reslevelno; // ==> N_L - r Jpeg2000ResLevel *rlevel = comp->reslevel + reslevelno; |