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-rw-r--r--security/commoncap.c7
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;
/*