diff options
| author | Michael Niedermayer <[email protected]> | 2020-12-18 23:13:58 +0100 |
|---|---|---|
| committer | Michael Niedermayer <[email protected]> | 2021-09-11 21:23:49 +0200 |
| commit | 599b9b89d1bccf2e72a75bc6e546b6ac0a898fa0 (patch) | |
| tree | 4673981cc8b03bdfeb05c5f12f1fd3462d7371a9 | |
| parent | 15e4a29785bc8c04a52540a9b64c6da41fd27c64 (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 <[email protected]>
(cherry picked from commit 3c41d0bfd6041890b394a3e6eb2f8da92b83416b)
Signed-off-by: Michael Niedermayer <[email protected]>
| -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 64b3b6aa4f..6f0cb1c549 100644 --- a/libavformat/rmdec.c +++ b/libavformat/rmdec.c @@ -257,7 +257,7 @@ 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; } |