diff options
| -rw-r--r-- | security/commoncap.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/security/commoncap.c b/security/commoncap.c index 7abebd782d5e..d59320282294 100644 --- a/security/commoncap.c +++ b/security/commoncap.c @@ -82,8 +82,11 @@ int cap_capable(const struct cred *cred, struct user_namespace *targ_ns, if (ns == cred->user_ns) return cap_raised(cred->cap_effective, cap) ? 0 : -EPERM; - /* Have we tried all of the parent namespaces? */ - if (ns == &init_user_ns) + /* + * If we're already at a lower level than we're looking for, + * we're done searching. + */ + if (ns->level <= cred->user_ns->level) return -EPERM; /* |