CVE-2026-89693

In the Linux kernel, the following vulnerability has been resolved:

nfsd: check nfsd4 acl to attr() return value in nfsd4 create()

nfsd4 create() stores the return value of nfsd4 acl to attr() in status, but the switch(create->cr type) block unconditionally overwrites it in every branch. ACL translation errors are silently discarded, and the CREATE proceeds without the requested ACL.

Add an early exit check after nfsd4 acl to attr(), matching the pattern already used in nfsd4 setattr().

[ cel: prefer NFS4ERR BADTYPE over NFS4ERR ATTRNOTSUPP ]