From: Michael Niedermayer <michael@niedermayer.cc>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: [FFmpeg-devel] [PATCH 1/6] avcodec/wnv1: Check for width =1
Date: Sun, 3 Jul 2022 02:31:47 +0200
Message-ID: <20220703003152.17850-1-michael@niedermayer.cc> (raw)
The decoder only outputs pixels for width >1 images, fail early
Fixes: Timeout
Fixes: 48298/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WNV1_fuzzer-6198626319204352
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
libavcodec/wnv1.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/libavcodec/wnv1.c b/libavcodec/wnv1.c
index 0cf2181a48..f1223493fe 100644
--- a/libavcodec/wnv1.c
+++ b/libavcodec/wnv1.c
@@ -129,6 +129,9 @@ static av_cold int decode_init(AVCodecContext *avctx)
ff_thread_once(&init_static_once, wnv1_init_static);
+ if (avctx->width <= 1)
+ return AVERROR_INVALIDDATA;
+
return 0;
}
--
2.17.1
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next reply other threads:[~2022-07-03 0:32 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-03 0:31 Michael Niedermayer [this message]
2022-07-03 0:31 ` [FFmpeg-devel] [PATCH 2/6] tools/target_dec_fuzzer: Adjust threshold for WCMV Michael Niedermayer
2022-07-12 18:03 ` Michael Niedermayer
2022-07-03 0:31 ` [FFmpeg-devel] [PATCH 3/6] avcodec/mss4: Check image size with av_image_check_size2() Michael Niedermayer
2022-07-21 17:39 ` Michael Niedermayer
2022-07-03 0:31 ` [FFmpeg-devel] [PATCH 4/6] avcodec/qdrw: adjust max colors to array size Michael Niedermayer
2022-07-03 8:15 ` Paul B Mahol
2022-07-03 17:11 ` Michael Niedermayer
2022-07-03 0:31 ` [FFmpeg-devel] [PATCH 5/6] tools/target_dec_fuzzer: Adjust threshold for ylc Michael Niedermayer
2022-07-12 18:04 ` Michael Niedermayer
2022-07-03 0:31 ` [FFmpeg-devel] [PATCH 6/6] tools/target_dec_fuzzer: Adjust threshold for LOCO Michael Niedermayer
2022-07-12 18:04 ` Michael Niedermayer
2022-07-03 6:38 ` [FFmpeg-devel] [PATCH 1/6] avcodec/wnv1: Check for width =1 Andreas Rheinhardt
2022-07-04 15:44 ` Michael Niedermayer
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