diff --git a/fs/smb/server/smbacl.c b/fs/smb/server/smbacl.c index 3adab8e10a21..90c5e3edbf46 100644 --- a/fs/smb/server/smbacl.c +++ b/fs/smb/server/smbacl.c @@ -270,6 +270,11 @@ static int sid_to_id(struct user_namespace *user_ns, return -EIO; } + if (psid->num_subauth == 0) { + pr_err("%s: zero subauthorities!\n", __func__); + return -EIO; + } + if (sidtype == SIDOWNER) { kuid_t uid; uid_t id;