From: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
To: ffmpeg-devel@ffmpeg.org
Subject: Re: [FFmpeg-devel] [PATCH] avcodec/h263dec: Check input size before GEOV/GEOX special case handling
Date: Fri, 25 Feb 2022 21:22:14 +0100
Message-ID: <AM7PR03MB66601733C51F0E34D332E18C8F3E9@AM7PR03MB6660.eurprd03.prod.outlook.com> (raw)
In-Reply-To: <20220225152940.26446-1-michael@niedermayer.cc>
Michael Niedermayer:
> Fixes: Timeout
> Fixes: 44921/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MPEG4_fuzzer-6546588791603200
>
> Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
> ---
> libavcodec/h263dec.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/libavcodec/h263dec.c b/libavcodec/h263dec.c
> index e940b7f7c7..56a41f6d05 100644
> --- a/libavcodec/h263dec.c
> +++ b/libavcodec/h263dec.c
> @@ -702,6 +702,7 @@ frame_end:
>
> if (s->last_picture_ptr || s->low_delay) {
> if ( pict->format == AV_PIX_FMT_YUV420P
> + && buf_size*16LL > s->mb_num
> && (s->codec_tag == AV_RL32("GEOV") || s->codec_tag == AV_RL32("GEOX"))) {
> int x, y, p;
> av_frame_make_writable(pict);
Does https://ffmpeg.org/pipermail/ffmpeg-devel/2022-February/293358.html
not fix the timeout?
- Andreas
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next prev parent reply other threads:[~2022-02-25 20:22 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-25 15:29 Michael Niedermayer
2022-02-25 20:22 ` Andreas Rheinhardt [this message]
2022-02-25 21:06 ` Michael Niedermayer
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