From: michaelni via ffmpeg-devel <ffmpeg-devel@ffmpeg.org>
To: ffmpeg-devel@ffmpeg.org
Cc: michaelni <code@ffmpeg.org>
Subject: [FFmpeg-devel] [PR] avformat/iff: Error out with 0 channel loudspeaker configuration (PR #21671)
Date: Sat, 07 Feb 2026 01:53:23 -0000
Message-ID: <177042920384.25.1197772851221785409@4457048688e7> (raw)
PR #21671 opened by michaelni
URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21671
Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21671.patch
Fixes: division by 0
Fixes: 478005965/clusterfuzz-testcase-minimized-ffmpeg_dem_IFF_fuzzer-5748337088462848
Fixes: 472226169/clusterfuzz-testcase-minimized-ffmpeg_dem_IFF_fuzzer-4528777763028992
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
>From 0b7877102da20f228e67b3ee61175c724520fb00 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michael@niedermayer.cc>
Date: Fri, 6 Feb 2026 23:44:40 +0100
Subject: [PATCH] avformat/iff: Error out with 0 channel loudspeaker
configuration
Fixes: division by 0
Fixes: 478005965/clusterfuzz-testcase-minimized-ffmpeg_dem_IFF_fuzzer-5748337088462848
Fixes: 472226169/clusterfuzz-testcase-minimized-ffmpeg_dem_IFF_fuzzer-4528777763028992
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
libavformat/iff.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/libavformat/iff.c b/libavformat/iff.c
index fc40ef1aea..8dccd58b35 100644
--- a/libavformat/iff.c
+++ b/libavformat/iff.c
@@ -346,8 +346,10 @@ static int parse_dsd_prop(AVFormatContext *s, AVStream *st, uint64_t eof)
if (config != 0xFFFF) {
if (config < FF_ARRAY_ELEMS(dsd_loudspeaker_config))
st->codecpar->ch_layout = dsd_loudspeaker_config[config];
- if (!st->codecpar->ch_layout.nb_channels)
+ if (!st->codecpar->ch_layout.nb_channels) {
avpriv_request_sample(s, "loudspeaker configuration %d", config);
+ return AVERROR_PATCHWELCOME;
+ }
}
break;
}
--
2.52.0
_______________________________________________
ffmpeg-devel mailing list -- ffmpeg-devel@ffmpeg.org
To unsubscribe send an email to ffmpeg-devel-leave@ffmpeg.org
reply other threads:[~2026-02-07 1:53 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
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=177042920384.25.1197772851221785409@4457048688e7 \
--to=ffmpeg-devel@ffmpeg.org \
--cc=code@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