1 files changed, 6 insertions, 0 deletions

diff --git a/security/commoncap.c b/security/commoncap.c
index 0cf4b53480a7..71a166a05975 100644
--- a/security/commoncap.c
+++ b/security/commoncap.c
@@ -29,6 +29,7 @@
 #include <linux/securebits.h>
 #include <linux/user_namespace.h>
 #include <linux/binfmts.h>
+#include <linux/personality.h>
 
 /*
  * If a non-root user executes a setuid-root binary in
@@ -505,6 +506,11 @@ int cap_bprm_set_creds(struct linux_binprm *bprm)
         }
 skip:
 
+        /* if we have fs caps, clear dangerous personality flags */
+        if (!cap_issubset(new->cap_permitted, old->cap_permitted))
+                bprm->per_clear |= PER_CLEAR_ON_SETID;
+
+
         /* Don't let someone trace a set[ug]id/setpcap binary with the revised
          * credentials unless they have the appropriate permit
          */