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avcodec/speedhq: Check width

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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@niedermayer.cc>
This commit is contained in:
Michael Niedermayer
2022-08-18 23:41:57 +02:00
parent 6195a0ee19
commit f0395f9ef6
1 changed files with 1 additions and 1 deletions
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2
libavcodec/speedhq.c
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@@ -498,7 +498,7 @@ 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];