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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-04-27 20:57:02 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-09-09 13:54:52 +0200 |
| commit | cb253316a86d6a0202b214ab95082984d57c5099 (patch) | |
| tree | 14f6184ac5219a222dca3b7c003ed913d8c5420b | |
| parent | 55922a70d9fc074ac143842e19e93ee63b7cb8bd (diff) | |
| download | ffmpeg-cb253316a86d6a0202b214ab95082984d57c5099.tar.gz | |
avformat/wavdec: Use 64bit in new_pos computation
Fixes: signed integer overflow: 129 * 16711680 cannot be represented in type 'int'
Fixes: 29102/clusterfuzz-testcase-minimized-ffmpeg_dem_WAV_fuzzer-6742285317439488
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 9b57d2f0a967195dc1c72fda8f3a983a0132a243)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/wavdec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavformat/wavdec.c b/libavformat/wavdec.c index 8abe07df61..051b3a5d23 100644 --- a/libavformat/wavdec.c +++ b/libavformat/wavdec.c @@ -639,7 +639,7 @@ smv_retry: if (wav->smv_last_stream) { uint64_t old_pos = avio_tell(s->pb); uint64_t new_pos = wav->smv_data_ofs + - wav->smv_block * wav->smv_block_size; + wav->smv_block * (int64_t)wav->smv_block_size; if (avio_seek(s->pb, new_pos, SEEK_SET) < 0) { ret = AVERROR_EOF; goto smv_out; |