From: Michael Niedermayer <michael@niedermayer.cc>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: [FFmpeg-devel] [PATCH 1/3] avformat/flvdec: Set last_ts before its timestamp is lost in ff_buffer_packet()
Date: Sat, 10 May 2025 16:36:06 +0200
Message-ID: <20250510143608.2309616-1-michael@niedermayer.cc> (raw)
Fixes: signed integer overflow: -9223372036315799519 + -9223372036854775807 cannot be represented in type 'long'
Fixes: 398356258/clusterfuzz-testcase-minimized-ffmpeg_dem_LIVE_FLV_fuzzer-4905723095482368
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
libavformat/flvdec.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/libavformat/flvdec.c b/libavformat/flvdec.c
index b90ed34b1c5..8af317f3cc9 100644
--- a/libavformat/flvdec.c
+++ b/libavformat/flvdec.c
@@ -1852,6 +1852,7 @@ retry_duration:
stream_type == FLV_STREAM_TYPE_DATA)
pkt->flags |= AV_PKT_FLAG_KEY;
+ flv->last_ts = pkt->dts;
ret = ff_buffer_packet(s, pkt);
if (ret < 0)
return ret;
@@ -1906,8 +1907,6 @@ leave:
}
}
- if (ret >= 0)
- flv->last_ts = pkt->dts;
return ret ? ret : res;
}
--
2.49.0
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next reply other threads:[~2025-05-10 14:36 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-10 14:36 Michael Niedermayer [this message]
2025-05-10 14:36 ` [FFmpeg-devel] [PATCH 2/3] avformat/avidec: Ignore duplicate GAB2 Michael Niedermayer
2025-05-14 22:40 ` Michael Niedermayer
2025-05-10 14:36 ` [FFmpeg-devel] [PATCH 3/3] avformat/iamf_parse: check space left for AAC Michael Niedermayer
2025-05-10 14:40 ` James Almer
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