From 1f1318971e1d7683d8930712eb06c8d12b2a0b48 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Tue, 27 Apr 2021 20:57:02 +0200 Subject: 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 (cherry picked from commit 9b57d2f0a967195dc1c72fda8f3a983a0132a243) Signed-off-by: Michael Niedermayer --- libavformat/wavdec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavformat/wavdec.c b/libavformat/wavdec.c index 8d1ec02d3f..1c5014f9d5 100644 --- a/libavformat/wavdec.c +++ b/libavformat/wavdec.c @@ -652,7 +652,7 @@ 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; -- cgit v1.2.3