CVE-2023-53526 jbd2: check 'jh->b_transaction' before removing it from checkpoint

In the Linux kernel, the following vulnerability has been resolved: jbd2: check 'jh-btransaction' before removing it from checkpoint Following process will corrupt ext4 image: Step 1: jbd2journalcommittransaction jbd2journalinsertcheckpointjh, committransaction // Put jh into trans1-tcheckpointli...