[FFmpeg-cvslog] avcodec/speedhq: Check width
Michael Niedermayer
git at videolan.org
Sun Sep 25 01:08:15 EEST 2022
ffmpeg | branch: release/5.1 | Michael Niedermayer <michael at niedermayer.cc> | Thu Aug 18 23:41:57 2022 +0200| [58c5976ca0829c94402a83b2940237bf7a7c067b] | committer: Michael Niedermayer
avcodec/speedhq: Check width
Fixes: out of array access
Fixes: 50014/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SPEEDHQ_fuzzer-4748914632294400
Alternatively the buffer size can be increased
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit f0395f9ef6051315973f1fdded1804f81458566d)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=58c5976ca0829c94402a83b2940237bf7a7c067b
---
libavcodec/speedhq.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/speedhq.c b/libavcodec/speedhq.c
index 4cfd4ce73d..e158061bcf 100644
--- a/libavcodec/speedhq.c
+++ b/libavcodec/speedhq.c
@@ -499,7 +499,7 @@ static int speedhq_decode_frame(AVCodecContext *avctx, AVFrame *frame,
uint32_t second_field_offset;
int ret;
- if (buf_size < 4 || avctx->width < 8)
+ if (buf_size < 4 || avctx->width < 8 || avctx->width % 8 != 0)
return AVERROR_INVALIDDATA;
quality = buf[0];
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