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

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CVE-2026-31611

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...

CVE-2026-31611

CVE-2026-31611 affects the Linux kernel's ksmbd path. The flaw occurs in parse_dacl() when comparing ACE SIDs to sid_unix_NFS_mode and subsequently reading sid.sub_auth[2] as the file mode. If the SID has only two sub-authorities, an ACE placed at the end of the ACL can cause sid.sub_auth[2] to r...

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...

CVE-2026-31611

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...