From: Leo Izen <leo.izen@gmail.com>
To: ffmpeg-devel@ffmpeg.org
Subject: Re: [FFmpeg-devel] [PATCH] avcodec/jpegxl_parser: add some icc profile checks
Date: Wed, 4 Oct 2023 18:14:25 -0400
Message-ID: <cda408d1-b1e3-4b14-b690-f3ebc3f63fbe@gmail.com> (raw)
In-Reply-To: <20231003173825.4357-1-leo.izen@gmail.com>
On 10/3/23 13:38, Leo Izen wrote:
> This patch will cause the parser to abort if it detects an icc profile
> with an invalid size. This is particularly important if the icc profile
> is entropy-encoded with zero bits per symbol, as it can prevent a
> seemingly infinite loop during parsing.
>
> Fixes: infinite loop
> Fixes: 62374/clusterfuzz-testcase-minimized-ffmpeg_IO_DEMUXER_fuzzer
> -5551878085410816
>
> Found-by: continuous fuzzing process
> https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
> Reported-by: Michael Niedermayer <michael@niedermayer.cc>
> Signed-off-by: Leo Izen <leo.izen@gmail.com>
> ---
> libavcodec/jpegxl_parser.c | 44 ++++++++++++++++++++++++++++++--------
> 1 file changed, 35 insertions(+), 9 deletions(-)
>
Will merge soon as it fixes a clusterfuzz case.
- Leo Izen
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prev parent reply other threads:[~2023-10-04 22:14 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-03 17:38 Leo Izen
2023-10-04 22:14 ` Leo Izen [this message]
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