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-rw-r--r--security/commoncap.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/security/commoncap.c b/security/commoncap.c
index 7abebd782d5e..abb6050c8083 100644
--- a/security/commoncap.c
+++ b/security/commoncap.c
@@ -481,6 +481,8 @@ out:
return rc;
}
+static int is_secureexec(struct linux_binprm *bprm);
+
/**
* cap_bprm_set_creds - Set up the proposed credentials for execve().
* @bprm: The execution parameters, including the proposed creds
@@ -614,11 +616,14 @@ skip:
if (WARN_ON(!cap_ambient_invariant_ok(new)))
return -EPERM;
+ /* Check for privilege-elevated exec. */
+ bprm->cap_elevated = is_secureexec(bprm);
+
return 0;
}
/**
- * cap_bprm_secureexec - Determine whether a secure execution is required
+ * is_secureexec - Determine whether a secure execution is required
* @bprm: The execution parameters
*
* Determine whether a secure execution is required, return 1 if it is, and 0
@@ -627,9 +632,9 @@ skip:
* The credentials have been committed by this point, and so are no longer
* available through @bprm->cred.
*/
-int cap_bprm_secureexec(struct linux_binprm *bprm)
+static int is_secureexec(struct linux_binprm *bprm)
{
- const struct cred *cred = current_cred();
+ const struct cred *cred = bprm->cred;
kuid_t root_uid = make_kuid(cred->user_ns, 0);
if (!uid_eq(cred->uid, root_uid)) {
@@ -1079,7 +1084,6 @@ struct security_hook_list capability_hooks[] __lsm_ro_after_init = {
LSM_HOOK_INIT(capget, cap_capget),
LSM_HOOK_INIT(capset, cap_capset),
LSM_HOOK_INIT(bprm_set_creds, cap_bprm_set_creds),
- LSM_HOOK_INIT(bprm_secureexec, cap_bprm_secureexec),
LSM_HOOK_INIT(inode_need_killpriv, cap_inode_need_killpriv),
LSM_HOOK_INIT(inode_killpriv, cap_inode_killpriv),
LSM_HOOK_INIT(mmap_addr, cap_mmap_addr),