Impact
fn HeaderChecker#check_valid skipped main chain checking after this PR: https://github.com/nervosnetwork/ckb/pull/1646/files#diff-c4e017b67c1b3005ca0c446a9b0879571aa36a858b1f7ddd1b9328a884e3214bR171-R176
It will cause network forking if one transaction is using a forked block header which is not exists in local node’s storage.
Patches
0.101.1 and later versions