MEDIUM
GHSA-9mfc-chwf-7whf
ckb: Large dep group requires a lot of resources to process but the cost to commit the transaction is very low.
Details
### Impact
When a transaction contains a dep group with many cells, the resources required to process it are not linear to the transaction size nor spent script cycles.
### Patches
In 0.43.3, nodes drop the transactions relayed to them when they contain a dep group with more than 64 cells. They do not ban peers who send them such transactions.
In 0.100, the consensus disallow transactions using a dep group with more than 64 cells. Peers relaying such transaction must be banned. Blocks committing such transactions must be rejected.
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