From: Michael Niedermayer <michael@niedermayer.cc>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: [FFmpeg-devel] [PATCH 1/5] avcodec/wbmpdec: use remaining size not whole size
Date: Fri, 13 Jan 2023 01:01:34 +0100
Message-ID: <20230113000138.9994-1-michael@niedermayer.cc> (raw)
Fixes: out of array access
Fixes: 48567/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WBMP_fuzzer-6652634692190208
Fixes: 48567/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WBMP_fuzzer-6653703453278208
Fixes: 48567/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WBMP_fuzzer-6668020758216704
Fixes: 48567/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WBMP_fuzzer-6684749875249152
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
libavcodec/wbmpdec.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/wbmpdec.c b/libavcodec/wbmpdec.c
index 9638b55b94..8b105bc135 100644
--- a/libavcodec/wbmpdec.c
+++ b/libavcodec/wbmpdec.c
@@ -72,7 +72,7 @@ static int wbmp_decode_frame(AVCodecContext *avctx, AVFrame *p,
if (p->linesize[0] == (width + 7) / 8)
bytestream2_get_buffer(&gb, p->data[0], height * ((width + 7) / 8));
else
- readbits(p->data[0], width, height, p->linesize[0], gb.buffer, gb.buffer_end - gb.buffer_start);
+ readbits(p->data[0], width, height, p->linesize[0], gb.buffer, gb.buffer_end - gb.buffer);
p->key_frame = 1;
p->pict_type = AV_PICTURE_TYPE_I;
--
2.17.1
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next reply other threads:[~2023-01-13 0:01 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-13 0:01 Michael Niedermayer [this message]
2023-01-13 0:01 ` [FFmpeg-devel] [PATCH 2/5] avcodec/xpmdec: Check size before allocation to avoid truncation Michael Niedermayer
2023-01-13 0:11 ` James Almer
2023-01-13 20:49 ` Michael Niedermayer
2023-01-13 20:53 ` James Almer
2023-01-13 20:56 ` Michael Niedermayer
2023-01-13 0:01 ` [FFmpeg-devel] [PATCH 3/5] avcodec/012v: Order operations for odd size handling Michael Niedermayer
2023-01-16 8:19 ` Paul B Mahol
2023-01-13 0:01 ` [FFmpeg-devel] [PATCH 4/5] avcodec/motionpixels: Mask pixels to valid values Michael Niedermayer
2023-02-23 22:35 ` Michael Niedermayer
2023-01-13 0:01 ` [FFmpeg-devel] [PATCH 5/5] avcodec/sonic: avoid integer overflow on quantization parameter Michael Niedermayer
2023-01-13 10:15 ` Paul B Mahol
2023-01-15 2:44 ` [FFmpeg-devel] [PATCH 1/5] avcodec/wbmpdec: use remaining size not whole size Peter Ross
2023-01-15 17:12 ` Michael Niedermayer
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