Overview
About vulnerability
In the Linux kernel, the following vulnerability has been resolved: nvme-multipath: fix lockdep WARN due to partition scan work Blktests test cases nvme/014, 057 and 058 fail occasionally due to a lockdep WARN. As reported in the Closes tag URL, the WARN indicates that a deadlock can happen due to the dependency among disk->open_mutex, kblockd workqueue completion and partition_scan_work completion. To avoid the lockdep WARN and the potential deadlock, cut the dependency by running the partition_scan_work not by kblockd workqueue but by nvme_wq. A flaw was found in the Linux kernel’s nvme-multipath component. A local user could potentially trigger a deadlock due to a dependency issue between disk open mutexes, kblockd workqueue completion, and partition scan work completion. This could lead to a system hang, resulting in a Denial of Service (DoS).Details
KernelCare state
Live-patch status from KernelCare for each operating system.
| Operating system | Status | Covered kernels |
|---|---|---|
| Debian 12 | Released |
14 kernels
|
| Debian 13 | Will Not Fix | — |
| Ubuntu 24.04 | Planned | — |
| Ubuntu 24.04 AWS | Planned | — |