CVE-2026-64065

Name of the Vulnerable Software and Affected Versions Linux kernel version 7.0.0-rc1

Description A kernel BUG occurs in the netfs component due to a VM BUG ON FOLIO() issue within the netfs write begin() function. This issue is triggered when folio unlock() is called on a folio that is not locked, leading to an invalid opcode exception and a system crash. The problem was observed during the execution of the generic/013 test-case.

Recommendations Update the Linux kernel to a version where the netfs write begin() function has been patched to resolve the VM BUG ON FOLIO() issue.