Ben Coddington

**Name of the Vulnerable Software and Affected Versions** Linux kernel (affected versions not specified) **Description** An issue exists in the NFS LOCALIO, an optimization for loopback mounts that bypasses the network for READ, WRITE, and COMMIT operations when the client and server are on the same system. This component is susceptible to a recursion deadlock during direct reclaim, which occurs when a process moves from NFS LOCALIO to another filesystem like XFS and then back into NFS via the `nfs writepages()` function. **Recommendations** At the moment, there is no information about a newer version that contains a fix for this vulnerability.

**Name of the Vulnerable Software and Affected Versions** Linux kernel (affected versions not specified) **Description** The Linux kernel contains a flaw related to the pNFS (parallel Network File System) implementation. Specifically, a deadlock can occur when returning a delegation during an open operation. This happens when a delegreturn waits for a layout return that cannot complete due to an ongoing state recovery process, which itself is blocked until the open operation finishes processing delegations. The resolution involves propagating existing flags to the `pnfs roc()` function to prevent it from waiting in this scenario. **Recommendations** At the moment, there is no information about a newer version that contains a fix for this vulnerability.