CVE-2023-53360 NFSv4.2: Rework scratch handling for READ_PLUS (again)

In the Linux kernel, the following vulnerability has been resolved: NFSv4.2: Rework scratch handling for READPLUS again I found that the read code might send multiple requests using the same nfspgioheader, but nfs4procreadsetup is only called once. This is how we ended up occasionally...

CVE-2023-53360

CVE-2023-53360 affects the Linux kernel NFSv4.2 path for READ_PLUS and can cause a hole-decode oops and scratch buffer NULL/length mismatch due to reworked scratch handling that reused an nfs_pgio_header across multiple requests. The root cause is that multiple reads could be sent with a single n...