From: Michael Niedermayer <michael@niedermayer.cc>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: [FFmpeg-devel] [PATCH] avcodec/binkaudio: reset ch_offset on errors
Date: Mon, 28 Mar 2022 21:12:27 +0200
Message-ID: <20220328191227.25781-1-michael@niedermayer.cc> (raw)
Fixes: NULL pointer dereference
Fixes: 45955/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_BINKAUDIO_DCT_fuzzer-4842044192849920
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
libavcodec/binkaudio.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/libavcodec/binkaudio.c b/libavcodec/binkaudio.c
index 56b58b57c8..c4f3e743e2 100644
--- a/libavcodec/binkaudio.c
+++ b/libavcodec/binkaudio.c
@@ -329,6 +329,7 @@ again:
avctx->codec->id == AV_CODEC_ID_BINKAUDIO_DCT,
FFMIN(MAX_CHANNELS, s->channels - s->ch_offset), s->ch_offset)) {
av_log(avctx, AV_LOG_ERROR, "Incomplete packet\n");
+ s->ch_offset = 0;
return AVERROR_INVALIDDATA;
}
s->ch_offset += MAX_CHANNELS;
@@ -347,6 +348,7 @@ again:
return 0;
fail:
+ s->ch_offset = 0;
av_packet_unref(s->pkt);
return ret;
}
--
2.17.1
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next reply other threads:[~2022-03-28 19:12 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-28 19:12 Michael Niedermayer [this message]
2022-03-28 19:24 ` Paul B Mahol
2022-03-29 15:49 ` Michael Niedermayer
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