CVE-2026-31611 ksmbd: require 3 sub-authorities before reading sub_auth[2]

In the Linux kernel, the following vulnerability has been resolved: ksmbd: require 3 sub-authorities before reading subauth2 parsedacl compares each ACE SID against sidunixNFSmode and on match reads sid.subauth2 as the file mode. If sidunixNFSmode is the prefix S-1-5-88-3 with numsubauth = 2 then...