Linux Kernel NFS Writeback Thread Stuck in Low Memory Vulnerability

A vulnerability in the Linux kernel's NFS writeback handling can cause writeback threads to become stuck in memory allocation loops during low memory situations. This issue has been addressed by allowing the NFS writeback code to fail gracefully instead of getting trapped in infinite loops.

Impact

The vulnerability could lead to performance degradation by causing writeback threads to hang indefinitely, potentially disrupting normal NFS operations and exacerbating memory management issues.