CVE-2026-64298 NFSv4: include MAY_WRITE in open permission mask for O_TRUNC

In the Linux kernel, the following vulnerability has been resolved: NFSv4: include MAYWRITE in open permission mask for OTRUNC POSIX requires write permission to truncate a file, so an open that specifies OTRUNC must be authorized for write access regardless of the OACCMODE access mode...