From: Michael Niedermayer <michael@niedermayer.cc>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: Re: [FFmpeg-devel] [PATCH 2/3] avcodec/hevcdec: do not memcpy into itself
Date: Fri, 8 Sep 2023 00:07:33 +0200
Message-ID: <20230907220733.GS8640@pb2> (raw)
In-Reply-To: <20230427183840.1015-2-michael@niedermayer.cc>
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On Thu, Apr 27, 2023 at 08:38:39PM +0200, Michael Niedermayer wrote:
> Iam not sure if this buffer setup is intended but if it occurs memcpy() cannot always
> be used
>
> Fixes: memcpy-param-overlap
> Fixes: 58062/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_HEVC_fuzzer-4717458841010176
>
> Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
> ---
> libavcodec/hevcdec.c | 1 +
> 1 file changed, 1 insertion(+)
patch withdrawn, as this is not a complete fix of the issue
[...]
--
Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
Complexity theory is the science of finding the exact solution to an
approximation. Benchmarking OTOH is finding an approximation of the exact
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next prev parent reply other threads:[~2023-09-07 22:07 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-27 18:38 [FFmpeg-devel] [PATCH 1/3] tools/target_dec_fuzzer: Adjust threshold for rka Michael Niedermayer
2023-04-27 18:38 ` [FFmpeg-devel] [PATCH 2/3] avcodec/hevcdec: do not memcpy into itself Michael Niedermayer
2023-09-07 22:07 ` Michael Niedermayer [this message]
2023-04-27 18:38 ` [FFmpeg-devel] [PATCH 3/3] avcodec/hevc_ps: Avoid signed overflow before check on QP Michael Niedermayer
2023-04-27 18:49 ` James Almer
2023-04-30 19:58 ` Michael Niedermayer
2023-04-30 22:33 ` [FFmpeg-devel] [PATCH 1/3] tools/target_dec_fuzzer: Adjust threshold for rka Michael Niedermayer
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