diff options
| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-10-21 23:22:05 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-07-02 19:55:09 +0200 |
| commit | 5dea535114c90f4f83e4ed981b94ffae56bf1572 (patch) | |
| tree | 3d08cb0eb26a9cc6ce6cb1d45693da62f68e26e6 | |
| parent | a1474a83048620d734001414db0f75e16d97adcc (diff) | |
| download | ffmpeg-5dea535114c90f4f83e4ed981b94ffae56bf1572.tar.gz | |
avcodec/sonic: Check e in get_symbol()
Fixes: signed integer overflow: 1721520852 + 1721520852 cannot be represented in type 'int'
Fixes: 18346/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SONIC_fuzzer-5709623893426176
Fixes: 18753/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SONIC_fuzzer-5663299131932672
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 aea67556116330d3151e4cd3ef1e266b5d90f388)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/sonic.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavcodec/sonic.c b/libavcodec/sonic.c index 953c70fcd4..1b16825403 100644 --- a/libavcodec/sonic.c +++ b/libavcodec/sonic.c @@ -144,6 +144,8 @@ static inline av_flatten int get_symbol(RangeCoder *c, uint8_t *state, int is_si e= 0; while(get_rac(c, state+1 + FFMIN(e,9))){ //1..10 e++; + if (e > 31) + return AVERROR_INVALIDDATA; } a= 1; |