From: Michael Niedermayer <michael@niedermayer.cc>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: [FFmpeg-devel] [PATCH 5/9] avformat/dhav: Use 64bit seek_back
Date: Sat, 17 Sep 2022 23:15:53 +0200
Message-ID: <20220917211557.11547-5-michael@niedermayer.cc> (raw)
In-Reply-To: <20220917211557.11547-1-michael@niedermayer.cc>
Fixes: negation of -2147483648 cannot be represented in type 'int'; cast to an unsigned type to negate this value to itself
Fixes: 50993/clusterfuzz-testcase-minimized-ffmpeg_dem_DHAV_fuzzer-6604736532447232
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
libavformat/dhav.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavformat/dhav.c b/libavformat/dhav.c
index 9d26efe8fc9..4e720f2a26c 100644
--- a/libavformat/dhav.c
+++ b/libavformat/dhav.c
@@ -242,7 +242,7 @@ static int64_t get_duration(AVFormatContext *s)
avio_seek(s->pb, avio_size(s->pb) - 8, SEEK_SET);
while (avio_tell(s->pb) > 12 && max_interations--) {
if (avio_rl32(s->pb) == MKTAG('d','h','a','v')) {
- int seek_back = avio_rl32(s->pb);
+ int64_t seek_back = avio_rl32(s->pb);
avio_seek(s->pb, -seek_back, SEEK_CUR);
read_chunk(s);
--
2.17.1
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next prev parent reply other threads:[~2022-09-17 21:16 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-17 21:15 [FFmpeg-devel] [PATCH 1/9] avformat/ape: Check frames size Michael Niedermayer
2022-09-17 21:15 ` [FFmpeg-devel] [PATCH 2/9] avformat/apm: Use 64bit for bit_rate computation Michael Niedermayer
2022-09-17 21:15 ` [FFmpeg-devel] [PATCH 3/9] avformat/asfdec_o: Limit packet offset Michael Niedermayer
2022-09-17 21:15 ` [FFmpeg-devel] [PATCH 4/9] avformat/cafdec: Check that nb_frasmes fits within 64bit Michael Niedermayer
2022-09-17 21:15 ` Michael Niedermayer [this message]
2022-09-17 21:15 ` [FFmpeg-devel] [PATCH 6/9] avformat/dxa: avoid bpc overflows Michael Niedermayer
2022-09-17 21:15 ` [FFmpeg-devel] [PATCH 7/9] avformat/genh: Check nb_channels for IMA ADPCM Michael Niedermayer
2022-09-17 21:15 ` [FFmpeg-devel] [PATCH 8/9] avformat/icodec: Check nb_pal Michael Niedermayer
2022-09-17 23:11 ` Peter Ross
2022-09-17 21:15 ` [FFmpeg-devel] [PATCH 9/9] avformat/jacosubdec: Fix overflow in get_shift() Michael Niedermayer
2022-09-23 21:03 ` [FFmpeg-devel] [PATCH 1/9] avformat/ape: Check frames size Michael Niedermayer
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