ckb: Large dep group requires a lot of resources to process but the cost to commit the transaction is very low.

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 ba...

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.

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 ba...

CVE-2021-45700

An issue was discovered in the ckb crate before 0.40.0 for Rust. Attackers can cause a denial of service Nervos CKB blockchain node crash via a dead call that is used as a DepGroup...

Miner fails to get block template when a cell used as a cell dep has been destroyed.

Impact The RPC getblocktemplate fails when a cell has been used as a cell dep and an input in the different transactions. Say cell C is used as a dep group in the transaction A, and is destroyed in the transaction B. The node adds transaction A first, then B into the transaction pool. They are bo...