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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-06-15 21:08:31 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-07-01 12:11:55 +0200 |
| commit | 39f5835d89f54bd03fb7f6cd462b52038f72fc64 (patch) | |
| tree | b31329083adf82b2b6078774c79582d9b7e204f9 | |
| parent | 5449787c47c746cdc6558133165178f272cf835d (diff) | |
| download | ffmpeg-39f5835d89f54bd03fb7f6cd462b52038f72fc64.tar.gz | |
avcodec/motionpixels: Check for vlc error in mp_get_vlc()
Fixes: 15246/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MOTIONPIXELS_fuzzer-5168534407086080
Fixes: runtime error: index -1 out of bounds for type 'HuffCode [16]'
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 930cdef80ab695132d3de2128c3c23f2d698918b)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/motionpixels.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavcodec/motionpixels.c b/libavcodec/motionpixels.c index a88b837b3e..73977664a5 100644 --- a/libavcodec/motionpixels.c +++ b/libavcodec/motionpixels.c @@ -201,6 +201,8 @@ static int mp_get_vlc(MotionPixelsContext *mp, GetBitContext *gb) int i; i = (mp->codes_count == 1) ? 0 : get_vlc2(gb, mp->vlc.table, mp->max_codes_bits, 1); + if (i < 0) + return i; return mp->codes[i].delta; } |