From: Michael Niedermayer <michael@niedermayer.cc>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: [FFmpeg-devel] [PATCH 2/3] avcodec/mlpdec: Check max matrix instead of max channel in noise check
Date: Tue, 22 Nov 2022 00:58:22 +0100
Message-ID: <20221121235823.28468-2-michael@niedermayer.cc> (raw)
In-Reply-To: <20221121235823.28468-1-michael@niedermayer.cc>
This is a regression since: adaa06581c5444c94eef72d61b8166f096e2687a
Before this, max_channel and max_matrix_channel where compared for equality
Fixes: out of array access
Fixes: 53340/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TRUEHD_fuzzer-514959011885875
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
libavcodec/mlpdec.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/mlpdec.c b/libavcodec/mlpdec.c
index 0b0eb75990..5b14a3b03b 100644
--- a/libavcodec/mlpdec.c
+++ b/libavcodec/mlpdec.c
@@ -539,7 +539,7 @@ static int read_restart_header(MLPDecodeContext *m, GetBitContext *gbp,
/* This should happen for TrueHD streams with >6 channels and MLP's noise
* type. It is not yet known if this is allowed. */
- if (max_channel > MAX_MATRIX_CHANNEL_MLP && !noise_type) {
+ if (max_matrix_channel > MAX_MATRIX_CHANNEL_MLP && !noise_type) {
avpriv_request_sample(m->avctx,
"%d channels (more than the "
"maximum supported by the decoder)",
--
2.17.1
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next prev parent reply other threads:[~2022-11-21 23:58 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-21 23:58 [FFmpeg-devel] [PATCH 1/3] avutil/tx: Use unsigned in ff_tx_fft_sr_combine() to avoid undefined behavior Michael Niedermayer
2022-11-21 23:58 ` Michael Niedermayer [this message]
2022-11-21 23:58 ` [FFmpeg-devel] [PATCH 3/3] avcodec/dts2pts_bsf: Eliminate some 64bit corner cases Michael Niedermayer
2022-11-27 22:58 ` [FFmpeg-devel] [PATCH 1/3] avutil/tx: Use unsigned in ff_tx_fft_sr_combine() to avoid undefined behavior Michael Niedermayer
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