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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-12-18 23:13:58 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-02-02 13:12:12 +0100 |
| commit | 3c41d0bfd6041890b394a3e6eb2f8da92b83416b (patch) | |
| tree | 49edb5ed39f214e8d58fa004664590c50b53fec4 /libavformat/rmdec.c | |
| parent | 57f7e5caa324fd760aa9e134ee963e9936083c59 (diff) | |
avformat/rmdec: Fix codecdata_length overflow check
Fixes: signed integer overflow: 2147483647 + 64 cannot be represented in type 'int'
Fixes: 28509/clusterfuzz-testcase-minimized-ffmpeg_dem_IVR_fuzzer-6310969680723968
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavformat/rmdec.c')
| -rw-r--r-- | libavformat/rmdec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavformat/rmdec.c b/libavformat/rmdec.c index 004c62086d..ae83a8afe7 100644 --- a/libavformat/rmdec.c +++ b/libavformat/rmdec.c @@ -254,7 +254,7 @@ static int rm_read_audio_stream_info(AVFormatContext *s, AVIOContext *pb, if (version == 5) avio_r8(pb); codecdata_length = avio_rb32(pb); - if(codecdata_length + AV_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){ + if((unsigned)codecdata_length > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE){ av_log(s, AV_LOG_ERROR, "codecdata_length too large\n"); return -1; } |