CVE-2026-64062

A flaw was found in the Linux kernel's network filesystem (netfs) component. Specifically, a vulnerability in the netfs_advance_writethrough() function, when operating in write-through mode, can lead to a system deadlock. This occurs because the function may not consistently unlock memory pages (folios) or mark them as modified, preventing proper writeback operations. Consequently, concurrent memory-mapped (mmapped) read and write operations can cause the system to become unresponsive.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.