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avformat/hls: Use unsigned for iv computation 

Fixes: signed integer overflow: 9223372036854775748 + 60 cannot be represented in type 'long'
Fixes: 44417/clusterfuzz-testcase-minimized-ffmpeg_dem_HLS_fuzzer-5802443881971712

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Steven Liu <lingjiujianke@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2022-02-08 00:30:59 +01:00
parent 6ee283d7d0
commit bf33a38499
1 changed files with 1 additions and 1 deletions
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2
libavformat/hls.c
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@ -914,7 +914,7 @@ static int parse_playlist(HLSContext *c, const char *url,
if (has_iv) {
memcpy(seg->iv, iv, sizeof(iv));
} else {
int64_t seq = pls->start_seq_no + pls->n_segments;
uint64_t seq = pls->start_seq_no + (uint64_t)pls->n_segments;
memset(seg->iv, 0, sizeof(seg->iv));
AV_WB64(seg->iv + 8, seq);
}