From: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
To: ffmpeg-devel@ffmpeg.org
Subject: Re: [FFmpeg-devel] [PATCH 4/6] avcodec/sgidec: do not forget the number of components in read_uncompressed_sgi()
Date: Thu, 12 Jan 2023 01:02:57 +0100
Message-ID: <AS8P250MB0744B52A02EF8232BCD2CA6A8FFD9@AS8P250MB0744.EURP250.PROD.OUTLOOK.COM> (raw)
In-Reply-To: <20230111235432.2135-4-michael@niedermayer.cc>
Michael Niedermayer:
> Fixes: out of array access
> Fixes: 48567/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SGI_fuzzer-6704753329700864
> Fixes: 48567/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SGI_fuzzer-6683986844057600
> Fixes: 48567/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SGI_fuzzer-6697387691474944
>
> Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
> ---
> libavcodec/sgidec.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/libavcodec/sgidec.c b/libavcodec/sgidec.c
> index 6ff2ee97f6..92083f23de 100644
> --- a/libavcodec/sgidec.c
> +++ b/libavcodec/sgidec.c
> @@ -159,7 +159,7 @@ static int read_uncompressed_sgi(uint8_t *const out[4], const ptrdiff_t stride[4
> unsigned rowsize = width * bytes_per_channel;
>
> /* Test buffer size. */
> - if (rowsize * (int64_t)height > bytestream2_get_bytes_left(g))
> + if (rowsize * (int64_t)height * nb_components > bytestream2_get_bytes_left(g))
> return AVERROR_INVALIDDATA;
>
> for (unsigned z = 0; z < nb_components; z++) {
LGTM. (Sorry for having forgotten this in
ce4713ea731b9deb0440abe8d8a2a41d2957efc5.)
- Andreas
_______________________________________________
ffmpeg-devel mailing list
ffmpeg-devel@ffmpeg.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
To unsubscribe, visit link above, or email
ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".
next prev parent reply other threads:[~2023-01-12 0:02 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-11 23:54 [FFmpeg-devel] [PATCH 1/6] avcodec/eatgq: : Check index increments in tgq_decode_block() Michael Niedermayer
2023-01-11 23:54 ` [FFmpeg-devel] [PATCH 2/6] avcodec/pngdec: Check deloco index more exactly Michael Niedermayer
2023-02-23 22:21 ` Michael Niedermayer
2023-01-11 23:54 ` [FFmpeg-devel] [PATCH 3/6] avcodec/pngdec: dont skip/read chunk twice Michael Niedermayer
2023-02-23 22:22 ` Michael Niedermayer
2023-01-11 23:54 ` [FFmpeg-devel] [PATCH 4/6] avcodec/sgidec: do not forget the number of components in read_uncompressed_sgi() Michael Niedermayer
2023-01-12 0:02 ` Andreas Rheinhardt [this message]
2023-01-12 14:28 ` Michael Niedermayer
2023-01-11 23:54 ` [FFmpeg-devel] [PATCH 5/6] avcodec/videodsp_template: Adjust pointers to avoid undefined pointer things Michael Niedermayer
2023-02-23 22:23 ` Michael Niedermayer
2023-01-11 23:54 ` [FFmpeg-devel] [PATCH 6/6] avcodec/tiff: do not try to read a value from a 0 value linearization table Michael Niedermayer
2023-01-15 2:50 ` [FFmpeg-devel] [PATCH 1/6] avcodec/eatgq: : Check index increments in tgq_decode_block() Peter Ross
2023-01-15 17:21 ` Michael Niedermayer
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=AS8P250MB0744B52A02EF8232BCD2CA6A8FFD9@AS8P250MB0744.EURP250.PROD.OUTLOOK.COM \
--to=andreas.rheinhardt@outlook.com \
--cc=ffmpeg-devel@ffmpeg.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Git Inbox Mirror of the ffmpeg-devel mailing list - see https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
This inbox may be cloned and mirrored by anyone:
git clone --mirror https://master.gitmailbox.com/ffmpegdev/0 ffmpegdev/git/0.git
# If you have public-inbox 1.1+ installed, you may
# initialize and index your mirror using the following commands:
public-inbox-init -V2 ffmpegdev ffmpegdev/ https://master.gitmailbox.com/ffmpegdev \
ffmpegdev@gitmailbox.com
public-inbox-index ffmpegdev
Example config snippet for mirrors.
AGPL code for this site: git clone https://public-inbox.org/public-inbox.git