From: Michael Niedermayer <michael@niedermayer.cc>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: [FFmpeg-devel] [PATCH 4/4] avcodec/speedhq: Check buf_size to be big enough for DC
Date: Thu, 6 Oct 2022 22:37:09 +0200
Message-ID: <20221006203709.8398-4-michael@niedermayer.cc> (raw)
In-Reply-To: <20221006203709.8398-1-michael@niedermayer.cc>
Fixes: Timeout
Fixes: 51919/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SPEEDHQ_fuzzer-6023716480090112
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
libavcodec/speedhq.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/libavcodec/speedhq.c b/libavcodec/speedhq.c
index 6dbba02776a..04ba4dd19c5 100644
--- a/libavcodec/speedhq.c
+++ b/libavcodec/speedhq.c
@@ -500,6 +500,8 @@ static int speedhq_decode_frame(AVCodecContext *avctx, AVFrame *frame,
if (buf_size < 4 || avctx->width < 8 || avctx->width % 8 != 0)
return AVERROR_INVALIDDATA;
+ if (buf_size < avctx->width*avctx->height / 64 / 4)
+ return AVERROR_INVALIDDATA;
quality = buf[0];
if (quality >= 100) {
--
2.17.1
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next prev parent reply other threads:[~2022-10-06 20:37 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-06 20:37 [FFmpeg-devel] [PATCH 1/4] avformat/asfdec_o: Check offset before adding index entry Michael Niedermayer
2022-10-06 20:37 ` [FFmpeg-devel] [PATCH 2/4] avcodec/ffv1dec: Fail earlier if prior context is corrupted Michael Niedermayer
2022-10-06 20:37 ` [FFmpeg-devel] [PATCH 3/4] tools/target_dec_fuzzer: Adjust threshold for FFV1 Michael Niedermayer
2022-10-06 20:37 ` Michael Niedermayer [this message]
2022-10-20 19:42 ` [FFmpeg-devel] [PATCH 1/4] avformat/asfdec_o: Check offset before adding index entry Michael Niedermayer
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