From: Michael Niedermayer <michael@niedermayer.cc>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: [FFmpeg-devel] [PATCH 6/6] avformat/rka: Fix division by 0 for bps < 8
Date: Sun, 9 Apr 2023 16:26:27 +0200
Message-ID: <20230409142627.19820-6-michael@niedermayer.cc> (raw)
In-Reply-To: <20230409142627.19820-1-michael@niedermayer.cc>
Fixes: division by zero
Fixes: 57828/clusterfuzz-testcase-minimized-ffmpeg_dem_RKA_fuzzer-6571818338353152
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
libavformat/rka.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavformat/rka.c b/libavformat/rka.c
index 39e5b3bce12..c83a17c92cc 100644
--- a/libavformat/rka.c
+++ b/libavformat/rka.c
@@ -100,7 +100,7 @@ static int rka_read_header(AVFormatContext *s)
break;
}
- if ((r = av_add_index_entry(st, framepos, (i * 131072LL) / (channels * (bps >> 3)),
+ if ((r = av_add_index_entry(st, framepos, (i * 131072LL*8) / (channels * bps),
size, 0, AVINDEX_KEYFRAME)) < 0)
return r;
framepos += size;
--
2.17.1
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next prev parent reply other threads:[~2023-04-09 14:27 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-09 14:26 [FFmpeg-devel] [PATCH 1/6] avcodec/huffyuvdec: Fix undefined behavior with shift Michael Niedermayer
2023-04-09 14:26 ` [FFmpeg-devel] [PATCH 2/6] avcodec/hevc_ps: Check num_ref_loc_offsets Michael Niedermayer
2023-04-09 14:26 ` [FFmpeg-devel] [PATCH 3/6] avcodec/rka: Fix signed integer overflow in decode_filter() Michael Niedermayer
2023-04-09 14:26 ` [FFmpeg-devel] [PATCH 4/6] avcodec/escape124: Check that blocks are allocated before use Michael Niedermayer
2023-04-09 14:26 ` [FFmpeg-devel] [PATCH 5/6] Revert "avcodec/er: remove check for fields" Michael Niedermayer
2023-04-09 21:15 ` Michael Niedermayer
2023-04-14 0:37 ` Michael Niedermayer
2023-04-09 14:26 ` Michael Niedermayer [this message]
2023-04-09 19:02 ` [FFmpeg-devel] [PATCH 6/6] avformat/rka: Fix division by 0 for bps < 8 Paul B Mahol
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