On 7/19/2022 8:34 AM, Michael Niedermayer wrote:
Fixes: Timeout
Fixes:
49160/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FFV1_fuzzer-5672826144686080
Found-by: continuous fuzzing process
https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
---
libavcodec/ffv1dec.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/libavcodec/ffv1dec.c b/libavcodec/ffv1dec.c
index 01ddcaa512..9bdac0be4e 100644
--- a/libavcodec/ffv1dec.c
+++ b/libavcodec/ffv1dec.c
@@ -883,7 +883,11 @@ static int decode_frame(AVCodecContext *avctx, AVFrame
*rframe,
if (buf_size < avctx->width * avctx->height / (128*8))
return AVERROR_INVALIDDATA;
} else {
- if (buf_size < avctx->height / 8)
+ int i;
for (int i...
+ int w = avctx->width;
+ for (i = 0; w > (1<<ff_log2_run[i]); i++)
+ w -= ff_log2_run[i];
+ if (buf_size < (avctx->height + i + 6)/ 8)
return AVERROR_INVALIDDATA;
}
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