Threats tagged 'ghsa-7fq2-6xq4-hq67'

A vulnerability in the Linux kernel's nvme-multipath component could cause a deadlock due to improper lock dependency handling during partition scan work. This issue was identified through intermittent lockdep warnings in specific Blktests test cases. The problem arises from a dependency cycle involving disk->open_mutex, kblockd workqueue completion, and partition_scan_work completion. The fix involves changing the execution context of partition_scan_work from the kblockd workqueue to the nvme_wq workqueue, thereby breaking the dependency cycle and preventing potential deadlocks.