diff options
Diffstat (limited to 'security/commoncap.c')
| -rw-r--r-- | security/commoncap.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/security/commoncap.c b/security/commoncap.c index 7ce191ea29a0..71a166a05975 100644 --- a/security/commoncap.c +++ b/security/commoncap.c @@ -28,6 +28,8 @@ #include <linux/prctl.h> #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 @@ -504,6 +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 */ |