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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-10-21 23:22:05 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-07-01 12:49:26 +0200 |
| commit | a731e95beaf126c08017d2eca02437ea36cfb4b5 (patch) | |
| tree | e43887d40714ef8ae9c11ea7916c187dda901201 | |
| parent | c4b1fe4c15d419bb6c5245caebfdf4d39fd7ea02 (diff) | |
| download | ffmpeg-a731e95beaf126c08017d2eca02437ea36cfb4b5.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; |