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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-08-17 20:32:03 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-09-17 15:57:27 +0200 |
| commit | 1b5548cc0913032587b4579e4b8b23ebed4c5124 (patch) | |
| tree | e81081b1549fbe27e07de2fc92f81f4871273f5c | |
| parent | df2efc212dabc2cccb7101e15bba0c78cb5d80b3 (diff) | |
| download | ffmpeg-1b5548cc0913032587b4579e4b8b23ebed4c5124.tar.gz | |
avcodec/snowdec: Fix off by 1 error
Fixes: runtime error: index 4 out of bounds for type 'int8_t [4]'
Fixes: 3023/clusterfuzz-testcase-minimized-6421736130084864
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 d132683ddd4050d3fe103ca88c73258c3442dc34)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/snowdec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/snowdec.c b/libavcodec/snowdec.c index 7d6d7ff44f..4ebfa07c6a 100644 --- a/libavcodec/snowdec.c +++ b/libavcodec/snowdec.c @@ -355,7 +355,7 @@ static int decode_header(SnowContext *s){ Plane *p= &s->plane[plane_index]; p->diag_mc= get_rac(&s->c, s->header_state); htaps= get_symbol(&s->c, s->header_state, 0)*2 + 2; - if((unsigned)htaps > HTAPS_MAX || htaps==0) + if((unsigned)htaps >= HTAPS_MAX || htaps==0) return AVERROR_INVALIDDATA; p->htaps= htaps; for(i= htaps/2; i; i--){ |